UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) May 25, 2004

STRUCTURED ASSET SECURITIES CORPORATION (as Depositor under the Trust Agreement, dated as of April 1, 2004, providing for the issuance of Mortgage Pass-Through Ceritficates, Series 2004-7)
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction
of incorporation)

333-106925
(Commission
File Number)

74-2440850
(IRS Employer
Identification No.)

745 Seventh Avenue, 7th Floor, New York, NY
(Address of principal executive offices)

10019
(Zip Code)

Registrant's telephone number, including area code 212-526-7000

(Former name or former address, if changed since last report.)

Item 5. Other Events and Regulation FD Disclosure.

This current report on Form 8-K relates to the monthly distribution reported to the holders of Structured Asset Securities Corporation Mortgage Pass-Through Certificates, Series 2004-7, which was made on May 25, 2004.

Item 7. Financial Statements and Exhibits.

99.1 Monthly distribution report pursuant to Section 4.03 of the Trust Agreement for the distribution on May 25, 2004.
(Exhibit No. Description)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

LASALLE BANK NATIONAL ASSOCIATION, IN ITS CAPACITY AS TRUSTEE UNDER THE TRUST AGREEMENT ON BEHALF OF STRUCTURED ASSET SECURITIES CORPORATION, REGISTRANT

Date: May 27, 2004

By: /s/ Russell Goldenberg
Russell Goldenberg
Group Senior Vice President

STRUCTURED ASSET SECURITIES CORPORATION

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Reporting Package Table of Contents

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Administrator:
Rita Lopez 312.904.0351
rita.lopez@abnamro.com

Analyst:
Christina Clay 714.238.6767
Christina.Clay@abnamro.com

Statement Date:

135 S. LaSalle Street, Suite 1625
Chicago, IL 60603
USA

Statements to Certificateholders
Bond Interest Reconciliation
Substitution Detail History SASC0407
Other Related Information

Cash Reconciliation Summary CMSA v1

Shortfall Summary Report
Asset-Backed Facts ~ 15 Month Loan Status Summary

Asset-Backed Facts ~ 15 Month Payoff/Loss Summary
Modified Loan Detail
Realized Loss Detail

Page 2-4
Page 5
Page 6
Page 7

Page 8-13

Page 14
Page 15-20

Page 21
Page 22

Page 23

Historical REO Report

Substitution Detail History SASC0407

Page 24

Page 25

Page(s)

Information is available for this issue from the following sources

Issue Id:

Monthly Data File
Name:

SASC0407

SASC0407_200405_3.ZIP

Closing Date:

First Payment Date:

Rated Final Payment: Date:

30-Apr-04
25-May-04

25-May-37

Parties to The Transaction

Issuer: Structured Asset Securities Corporation

Underwriter: Lehman Brothers Inc.

Master Servicer: Aurora Loan Services, Inc.

Rating Agency: Moody's Investors Service, Inc./Standard & Poor's Rating Services

800.246.5761

LaSalle Factor Line

LaSalle Web Site
Servicer Web Site

www.alservices.com

www.etrustee.net

Page 1 of 25

Class

CUSIP

Original

Opening

Principal

Negative

Closing

Interest

Pass-Through

Per $ 1000

Next Rate(3)

WAC:
WAMM:

Payment Date:
Prior Payment:
Next Payment:
Record Date:

5.969184%

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

STRUCTURED ASSET SECURITIES CORPORATION

Mortgage Pass-Through Certificates

Series 2004-7

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

331

REMIC II

Statement Date:

ABN AMRO Acct: 721785.2

1000.000000000

13.239119691

0.000000000

986.760880309

4.808246023

5.769895220%

0.00

0.000000000

5.76989522%

0.000000000

86359BQK0

1-A1

463,826,000.00

6,140,647.93

0.00

457,685,352.07

2,230,189.52

1000.000000000

2.323704827

0.000000000

997.676295173

4.572196764

5.486636130%

0.00

0.000000000

5.48663613%

0.000000000

86359BQL8

2-A1

37,578,000.00

87,320.18

0.00

37,490,679.82

171,814.01

1000.000000000

3.892409555

0.000000000

996.107590445

4.583333333

Fixed

0.00

0.000000000

5.50000000%

0.000000000

86359BQM6

3-A1

51,993,000.00

202,378.05

0.00

51,790,621.95

238,301.25

1000.000000000

3.936935915

0.000000000

996.063064085

0.000000000

0.00

0.000000000

N/A

0.000000000

86359BQP9

2,107,507.00

8,297.12

0.00

2,099,209.88

0.00

1000.000000000

0.000000000

995.809746223

4.583333700

Fixed

0.00

0.000000000

5.50000000%

0.000000000

86359BQQ7

1,137,733.00

0.00

1,132,965.61

5,214.61

1000.000000000

0.000000000

996.578281153

4.583323576

Fixed

0.00

0.000000000

5.50000000%

0.000000000

86359BQN4

PAX

384,339.00

0.00

383,023.90

1,761.55

1000.000000000

1.338293112

0.000000000

998.661706888

4.770365159

5.705227327%

0.00

0.000000000

5.72443822%

0.000000000

86359BQR5

14,213,000.00

19,021.16

0.00

14,193,978.84

67,801.20

1000.000000000

1.338292230

0.000000000

998.661707770

4.770365951

5.705227327%

0.00

0.000000000

5.72443822%

0.000000000

86359BQS3

3,771,000.00

5,046.70

0.00

3,765,953.30

17,989.05

1000.000000000

1.338293103

0.000000000

998.661706897

4.770366379

5.705227327%

0.00

0.000000000

5.72443822%

0.000000000

86359BQT1

2,320,000.00

3,104.84

0.00

2,316,895.16

11,067.25

1000.000000000

1.338290640

0.000000000

998.661709360

4.770364532

5.705227327%

0.00

0.000000000

5.72443822%

0.000000000

863598BRL7/U85985QU3

2,030,000.00

2,716.73

0.00

2,027,283.27

9,683.84

1000.000000000

1.338289655

0.000000000

998.661710345

4.770365517

5.705227327%

0.00

0.000000000

5.72443822%

0.000000000

86359BRM5/U85985QV1

1,450,000.00

1,940.52

0.00

1,448,059.48

6,917.03

1000.000000000

1.338292156

0.000000000

998.661707844

4.770363792

5.705227327%

0.00

0.000000000

5.72443822%

0.000000000

86359BRN3/U85985QW9

874,495.15

1,170.33

0.00

873,324.82

4,171.66

1000.000000000

0.000000000

1386.100000000

N/A

0.00

138.13

1381.300000000

5.76989522%

0.000000000

86359BQU8

100.00

0.00

138.61

0.000000000

0.00

0.000000000

N/A

0.000000000

9ABSQ473

R-1

0.00

Page 2 of 25

Notes: (1) N denotes notional balance not included in total (2) Accrued Interest Plus/Minus Interest Adjustment Minus Deferred Interest equals Interest Payment (3) Estimated. * Denotes Controlling Class

Class

CUSIP

Original

Opening

Principal

Negative

Closing

Interest

Pass-Through

Per $ 1000

Next Rate(3)

WAC:
WAMM:

Payment Date:
Prior Payment:
Next Payment:
Record Date:

5.969184%

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

STRUCTURED ASSET SECURITIES CORPORATION

Mortgage Pass-Through Certificates

Series 2004-7

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

331

REMIC II

Statement Date:

ABN AMRO Acct: 721785.2

Total P&I Payment

0.00

138.13

580,163,102.15

9,236,793.14

Total

573,691,358.59

6,471,743.56

0.00

2,765,049.58

Page 3 of 25

Class

CUSIP

Original

Opening

Principal

Negative

Closing

Interest

Pass-Through

Per $ 0

Next Rate(3)

WAC:
WAMM:

Payment Date:
Prior Payment:
Next Payment:
Record Date:

5.969184%

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

STRUCTURED ASSET SECURITIES CORPORATION

Mortgage Pass-Through Certificates

Series 2004-7

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

331

Grantor Trust

Statement Date:

ABN AMRO Acct: 721785.2

0.000000000

0.00

5,196.57

0.000000000

N/A

0.000000000

9ABSQ471

0.00

5,196.57

0.000000000

0.00

0.000000000

N/A

0.000000000

9ABSQ472

0.00

Total P&I Payment

0.00

5,196.57

0.00

5,196.57

Total

0.00

5,196.57

Page 4 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Class

Accrued

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Bond Interest Reconciliation

Deductions

Allocable

Deferred &

Prior

Prepay-

Other

Additions

Interest

Credit Support

Original

Current(4)

Accrual

Int. Short-

falls Due

ment

Interest

Interest (2)

Payment

Amount

PPIS

Interest

Certificate

Accretion

Interest

Loss/Exp

Interest

Penalties

Proceeds (1)

Interest

Shortfalls

Certificate

Rate

Pass

Thru

Method Days

Outstanding

Remaining

Statement Date:

Distributable

Current Period

(Shortfall)/

Recovery

Int Accrual

on Prior

Shortfall (3)

0.00

1-A1

2,230,189.52

0.00

0.00%

30/360

5.769895220%

0.00

2-A1

171,814.01

0.00

0.00%

30/360

5.486636130%

0.00

3-A1

238,301.25

0.00

0.00%

30/360

5.500000000%

0.00

0.00%

30/360

0.000000000%

0.00

5,214.61

0.00

30/360

5.500000000%

0.00

PAX

1,761.55

0.00

30/360

5.500000000%

0.00

67,801.20

0.00

0.00%

30/360

5.724438225%

0.00

17,989.05

0.00

0.00%

30/360

5.724438225%

0.00

11,067.25

0.00

0.00%

30/360

5.724438225%

0.00

9,683.84

0.00

0.00%

30/360

5.724438225%

0.00

6,917.03

0.00

0.00%

30/360

5.724438225%

0.00

4,171.66

0.00

0.00%

30/360

5.724438225%

0.00

0.48

138.61

0.00

30/360

5.769895220%

0.00

5,196.57

0.00

5,196.57

0.00

30/360

0.000000000%

0.00

30/360

0.000000000%

0.00

5,196.57

0.00

2,764,911.45

2,770,108.02

2,770,246.15

0.00

(2) Accrued - Deductions + Additions Interest

(3) Includes interest accrued on outstanding Interest Shortfalls and/or Loss Allocations. Where applicable.

Page 5 of 25

(1) Other Interest Proceeds are additional interest amounts specifically allocated to the bond(s) and used in determining the bonds Distributable Interest.

(4) Determined as follows: (A) the ending balance of all the classes less (B) the sum of (i) the ending balance of the class and (ii) the ending balance of all classes which are not subordinate to the class divided by (A).

STRUCTURED ASSET SECURITIES CORPORATION

Substitution Detail History

ABN AMRO Acct: 721785.2

Series 2004-7

Mortgage Pass-Through Certificates

30-Apr-04

25-Jun-04

N/A

25-May-04

Record Date:

Next Payment:

Prior Payment:

Payment Date:

Statement Date:

Property ID

Deleted Loan

Qualified Substitute

Scheduled Prin Bal

Page 6 of 25

Original Property

Per Section 7.01(a)(i) of the Property Management and Lease Servicing Agreement, aggregate Appraised Value of the Qualified Substitute Mortgaged Properties acquired by the
Issuer since the Closing Date in connection with the substitution or exchange pursuant to Section 7.01 is not to exceed 25% of the aggregate Initial Appraised Value of the
Mortgaged Properties.

(A)

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Other Related Information

Statement Date:

Special Hazard Coverage

Beginning

Balance

Current

Reduction

Ending

Balance

Beginning

Balance

Current

Reduction

Beginning

Balance

Current

Reduction

Ending

Balance

Fraud Loss Coverage

Bankruptcy Loss Coverage

Ending

Balance

Number of Payoffs:
Aggregate Payoff Amounts:

Number of Curtailments:
Aggregate Curtailment Amounts:

Number of Loans in Foreclosure:
Book Value of Loans in Foreclosure:

Prior Realized Losses Allocated to the Certificates:
Current Realized Losses Allocated to the Certificates:
Cumulative Realized Losses Allocated to the Certificates since Cutoff:

Total

5,801,632.00

0.00

11,603,263.00

0.00

100,000.00

0.00

5,597,186.30

412

0.00

0.00
0.00

0.00

97,959.51

Page 7 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Statement Date:

Cash Reconciliation Summary

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

1,037,105.49

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

2,808,445.10

Unscheduled Interest:
Prepayment Penalties

5,196.57

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

5,196.57

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Special Servicing Fees

Interest Due Serv on Advances

Recoup of Prior Advances

Misc. Fees & Expenses

Total Unscheduled Fees & Expenses
Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Fee Strips
Misc. Fees
Interest Reserve Withholding

Plus Interest Reserve Deposit
Total

Total Interest Due Certs

Principal Summary

Scheduled Principal:
Current Scheduled Principal
Advanced Scheduled Principal
Scheduled Principal
Unscheduled Principal:
Curtailments
Prepayments in Full
Liquidation Proceeds
Repurchase Proceeds
Other Principal Proceeds
Total Unscheduled Principal
Remittance Principal

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

2,770,246.15

0.00
0.00
0.00
0.00

0.00

273,742.90
502,854.87
776,597.77

97,959.51

5,597,186.30

0.00
0.00
0.00

5,695,145.81
6,471,743.58

9,241,989.73

580,163,102.15

2,915

776,597.77

5,695,145.81

0.00
0.00

0.00

573,691,358.57

2,891

0.00

502,854.87

1,771,339.61

502,854.87

1,771,339.61

43,395.51

0.00
0.00

77,471.80

120,867.31

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(43,395.51

2,770,246.15

Interest Not Advanced (

Current Period

)

0.00

1,771,339.61

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Page 8 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Statement Date:

Cash Reconciliation Summary Pool Group 1

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

875,181.59

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

2,365,521.39

Unscheduled Interest:
Prepayment Penalties

5,196.57

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

5,196.57

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Special Servicing Fees

Interest Due Serv on Advances

Recoup of Prior Advances

Misc. Fees & Expenses

Total Unscheduled Fees & Expenses
Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Fee Strips
Misc. Fees
Interest Reserve Withholding

Plus Interest Reserve Deposit
Total

Total Interest Due Certs

Principal Summary

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

2,334,378.76

0.00
0.00
0.00
0.00

0.00

169,476.69
311,356.07
480,832.76

83,164.67

5,597,186.30

0.00
0.00
0.00

5,680,350.97
6,161,183.73

8,495,562.49

484,414,105.45

2,570

480,832.76

5,680,350.97

0.00
0.00

0.00

478,252,921.72

2,546

0.00

311,356.07

1,490,339.80

311,356.07

1,490,339.80

36,339.20

0.00
0.00

64,580.41

100,919.61

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(36,339.20

2,334,378.76

Interest Not Advanced (

Current Period

)

0.00

1,490,339.80

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Page 9 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Statement Date:

Cash Reconciliation Summary Pool Group 2

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

72,897.80

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

182,620.34

Unscheduled Interest:
Prepayment Penalties

0.00

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

0.00

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Special Servicing Fees

Interest Due Serv on Advances

Recoup of Prior Advances

Misc. Fees & Expenses

Total Unscheduled Fees & Expenses
Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Fee Strips
Misc. Fees
Interest Reserve Withholding

Plus Interest Reserve Deposit
Total

Total Interest Due Certs

Principal Summary

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

179,441.88

0.00
0.00
0.00
0.00

0.00

34,424.44
54,206.41
88,630.85

2,456.92

0.00
0.00
0.00
0.00

2,456.92

91,087.77

270,529.65

39,246,315.25

191

88,630.85

2,456.92

0.00
0.00

0.00

39,155,227.48

191

0.00

54,206.41

109,722.54

54,206.41

109,722.54

3,178.46

0.00
0.00

4,997.86

8,176.32

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(3,178.46

179,441.88

Interest Not Advanced (

Current Period

)

0.00

109,722.54

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Page 10 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Statement Date:

Cash Reconciliation Summary Pool Group 3

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

89,026.10

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

260,303.37

Unscheduled Interest:
Prepayment Penalties

0.00

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

0.00

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Special Servicing Fees

Interest Due Serv on Advances

Recoup of Prior Advances

Misc. Fees & Expenses

Total Unscheduled Fees & Expenses
Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Fee Strips
Misc. Fees
Interest Reserve Withholding

Plus Interest Reserve Deposit
Total

Total Interest Due Certs

Principal Summary

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

256,425.51

0.00
0.00
0.00
0.00

0.00

69,841.77

137,292.39
207,134.16

12,337.92

0.00
0.00
0.00
0.00

12,337.92

219,472.08

475,897.59

56,502,681.45

154

207,134.16

12,337.92

0.00
0.00

0.00

56,283,209.37

154

0.00

137,292.39

171,277.27

137,292.39

171,277.27

3,877.86

0.00
0.00

7,893.54

11,771.39

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(3,877.86

256,425.51

Interest Not Advanced (

Current Period

)

0.00

171,277.27

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Page 11 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Statement Date:

Cash Reconciliation Summary Pool Group 3 - AX Loans

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

47,453.94

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

111,922.52

Unscheduled Interest:
Prepayment Penalties

0.00

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

0.00

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Special Servicing Fees

Interest Due Serv on Advances

Recoup of Prior Advances

Misc. Fees & Expenses

Total Unscheduled Fees & Expenses
Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Fee Strips
Misc. Fees
Interest Reserve Withholding

Plus Interest Reserve Deposit
Total

Total Interest Due Certs

Principal Summary

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

109,958.28

0.00
0.00
0.00
0.00

0.00

36,251.17
47,631.05
83,882.22

7,820.81

0.00
0.00
0.00
0.00

7,820.81

91,703.03

201,661.31

22,853,163.50

83,882.22

7,820.81

0.00
0.00

0.00

22,761,460.47

0.00

47,631.05

64,468.58

47,631.05

64,468.58

1,964.24

0.00
0.00

2,796.84

4,761.08

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(1,964.24

109,958.28

Interest Not Advanced (

Current Period

)

0.00

64,468.58

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Page 12 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Statement Date:

Cash Reconciliation Summary Pool Group 3 - PAX Loans

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

6,748.14

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

33,837.83

Unscheduled Interest:
Prepayment Penalties

0.00

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

0.00

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Special Servicing Fees

Interest Due Serv on Advances

Recoup of Prior Advances

Misc. Fees & Expenses

Total Unscheduled Fees & Expenses
Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Fee Strips
Misc. Fees
Interest Reserve Withholding

Plus Interest Reserve Deposit
Total

Total Interest Due Certs

Principal Summary

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

33,558.85

0.00
0.00
0.00
0.00

0.00

4,647.67

19,511.42
24,159.09

189.01

0.00
0.00
0.00
0.00

189.01

24,348.10

57,906.95

6,937,592.01

24,159.09

189.01

0.00
0.00

0.00

6,913,243.91

0.00

19,511.42

27,089.69

19,511.42

27,089.69

278.98

0.00
0.00

1,166.35

1,445.33

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(278.98

33,558.85

Interest Not Advanced (

Current Period

)

0.00

27,089.69

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Page 13 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Interest Adjustments Summary

Statement Date:

0.00

Special Servicing Fees

Workout Fees

Liquidation Fees

Legal Fees

0.00

Misc. Fees & Expenses Paid by/to Servicer

Interest Paid to Servicer on Outstanding Advances

0.00

ASER Interest Advance Reduction

Interest Not Advanced (Current Period)

Recoup of Prior Advances by Servicer

0.00

Servicing Fees Paid Servicer on Loans Not Advanced

Misc. Fees & Expenses Paid by Trust

0.00

Shortfall Due to Rate Modification

Total Shortfall Allocated to the Bonds

Total Interest Adjustment to the Bonds

0.00

Shortfall Allocated to the Bonds:

Excess Allocated to the Bonds:

Other Interest Proceeds Due the Bonds

Yield Maintenance Penalties Due the Bonds

Prepayment Penalties Due the Bonds

Recovered ASER Interest Due the Bonds

Recovered Interest Due the Bonds

Less Total Shortfall Allocated to the Bonds

Total Excess Allocated to the Bonds

5,196.57

5,196.57

Total Excess Allocated to the Bonds

5,196.57

0.00

Aggregate Interest Adjustment Allocated to the Bonds

0.00

5,196.57

0.00

Prepayment Interest Excess Due the Bonds

0.00

ARD Excess Interest

0.00

Other Interest Loss

0.00

Net Prepayment Int. Shortfalls Allocated to the Bonds

Page 14 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary

Distribution

Date

Delinq 1 Month

Delinq 2 Months

Delinq 3+ Months

Foreclosure

REO

Modifications

Specially Serviced

Bankruptcy

# Balance

Delinquency Aging Categories

Special Event Categories (1)

Statement Date:

ABN AMRO Acct: 721785.2

0.03%

0.04%

0.00%

0.03%

0.04%

0.00%

25-May-04

237,521

239,874

(1) Note: Modification, Specially Serviced & Bankruptcy Totals are Included in the Appropriate Delinquency Aging Category

Page 15 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary

Distribution

Date

Delinq 1 Month

Delinq 2 Months

Delinq 3+ Months

Foreclosure

REO

Modifications

Specially Serviced

Bankruptcy

# Balance

Delinquency Aging Categories

Special Event Categories (1)

Statement Date:

Pool Group 1

ABN AMRO Acct: 721785.2

0.00%

25-May-04

(1) Note: Modification, Specially Serviced & Bankruptcy Totals are Included in the Appropriate Delinquency Aging Category

Page 16 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary

Distribution

Date

Delinq 1 Month

Delinq 2 Months

Delinq 3+ Months

Foreclosure

REO

Modifications

Specially Serviced

Bankruptcy

# Balance

Delinquency Aging Categories

Special Event Categories (1)

Statement Date:

Pool Group 2

ABN AMRO Acct: 721785.2

0.52%

0.61%

0.00%

25-May-04

237,521

(1) Note: Modification, Specially Serviced & Bankruptcy Totals are Included in the Appropriate Delinquency Aging Category

Page 17 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary

Distribution

Date

Delinq 1 Month

Delinq 2 Months

Delinq 3+ Months

Foreclosure

REO

Modifications

Specially Serviced

Bankruptcy

# Balance

Delinquency Aging Categories

Special Event Categories (1)

Statement Date:

Pool Group 3

ABN AMRO Acct: 721785.2

0.00%

0.65%

0.43%

0.00%

25-May-04

239,874

(1) Note: Modification, Specially Serviced & Bankruptcy Totals are Included in the Appropriate Delinquency Aging Category

Page 18 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary

Distribution

Date

Delinq 1 Month

Delinq 2 Months

Delinq 3+ Months

Foreclosure

REO

Modifications

Specially Serviced

Bankruptcy

# Balance

Delinquency Aging Categories

Special Event Categories (1)

Statement Date:

Pool Group 3 - AX Loans

ABN AMRO Acct: 721785.2

0.00%

1.45%

1.05%

0.00%

25-May-04

239,874

(1) Note: Modification, Specially Serviced & Bankruptcy Totals are Included in the Appropriate Delinquency Aging Category

Page 19 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary

Distribution

Date

Delinq 1 Month

Delinq 2 Months

Delinq 3+ Months

Foreclosure

REO

Modifications

Specially Serviced

Bankruptcy

# Balance

Delinquency Aging Categories

Special Event Categories (1)

Statement Date:

Pool Group 3 - PAX Loans

ABN AMRO Acct: 721785.2

0.00%

25-May-04

(1) Note: Modification, Specially Serviced & Bankruptcy Totals are Included in the Appropriate Delinquency Aging Category

Page 20 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Asset-Backed Facts ~ 15 Month Historical Payoff/Loss Summary

Distribution

Date

Ending Pool (1)

Payoffs(2)

Penalties

Appraisal Reduct. (2)

Liquidations (2)

Realized Losses (2)

Remaining Term

Curr Weighted Avg.

# Balance

# Amount

# Balance

# Amount

Life

Coupon Remit

Statement Date:

Amort

ABN AMRO Acct: 721785.2

Series 2004-7

25-May-04

2,891

99.18%

573,691,359

98.88%

0.82%

0.96%

0.00%

331

5.97%

5.72%

5,197

5,597,186

(1) Percentage based on pool as of cutoff. (2) Percentage based on pool as of beginning of period.

Page 21 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Modified Loan Detail

Disclosure

Control #

Modification

Date

Cutoff

Maturity

Date

Modification

Description

Modified

Maturity

Date

Statement Date:

Page 22 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

ABN AMRO Acct: 721785.2

Realized Loss Detail

Period

Disclosure

Control #

Appraisal

Date

Appraisal

Value

Beginning
Scheduled

Balance

Gross

Proceeds

Gross Proceeds

as a % of

Sched. Balance

Aggregate

Liquidation

Expenses *

Net

Liquidation

Proceeds

Net Proceeds

as a % of

Sched. Balance

Realized

Loss

Statement Date:

Current Total
Cumulative

Page 23 of 25

* Aggregate liquidation expenses also include outstanding P&I advances and unpaid servicing fees, unpaid trustee fees, etc..

STRUCTURED ASSET SECURITIES CORPORATION

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-May-04
25-May-04

N/A

25-Jun-04

30-Apr-04

Mortgage Pass-Through Certificates

Series 2004-7

Historical Collateral Level REO Report

Property

Type

Statement Date:

State

Actual

Balance

Scheduled

Balance

Recent

Appraisal

Value

Appraisal

Reduction

Amount

Date

Liquidated

Liquidation

Proceeds

Liquidation

Expenses

Realized

Loss

Disclosure

Control #

REO

Date

City

Appraisal

Date

ABN AMRO Acct: 721785.2

Page 24 of 25

STRUCTURED ASSET SECURITIES CORPORATION

Substitution Detail History

ABN AMRO Acct: 721785.2

Series 2004-7

Mortgage Pass-Through Certificates

30-Apr-04

25-Jun-04

N/A

25-May-04

Record Date:

Next Payment:

Prior Payment:

Payment Date:

Statement Date:

Property ID

Deleted Loan

Qualified Substitute

Scheduled Prin Bal

Page 25 of 25

Original Property

(A)

Structured Asset Securities Corp Mortgage Pass-Through Certificates, Series 2004-7 8-K