Deutsche Bank National Trust				Distribution Date:	7/19/05
Santa Ana, CA 92705	*GMAC*	*Mortgage*	*Corporation*
Attn:

Page 1

GMACM MORTGAGE LOAN TRUST 2005-AR4 GMACM Mortgage Pass-Through Certificates, Series 2005-AR4

Certificateholder Monthly Distribution Summary

			Certificate		Pass				Current		Cumulative
		Class	Rate	Beginning	Through	Principal	Interest	Total	Realized	Ending	Realized
Class	Cusip	Description	Type	Balance	Rate (%)	Distribution	Distribution	Distribution	Losses	Balance	Losses


1-A	76112BUD0	Senior	Fix-30/360	18,893,000.00	4.949906	416,463.28	77,932.15	494,395.43	0.00	18,476,536.72	0.00
2A-1	76112BUE8	Senior	Fix-30/360	56,050,000.00	5.377828	821,894.27	251,189.37	1,073,083.64	0.00	55,228,105.73	0.00
2A-2	76112BUF5	Senior	Fix-30/360	2,739,000.00	5.377828	40,163.58	12,274.89	52,438.47	0.00	2,698,836.42	0.00
3A-1	76112BUG3	Senior	Fix-30/360	144,100,000.00	5.114523	2,379,836.96	614,169.01	2,994,005.97	0.00	141,720,163.04	0.00
3A-2	76112BUH1	Senior	Fix-30/360	7,061,000.00	5.114523	116,613.66	30,094.71	146,708.37	0.00	6,944,386.34	0.00
4A-1	76112BUJ7	Senior	Fix-30/360	52,750,000.00	5.163260	40,359.54	226,968.33	267,327.87	0.00	52,709,640.46	0.00
4A-2	76112BUK4	Senior	Fix-30/360	2,592,000.00	5.163260	1,983.16	11,152.64	13,135.80	0.00	2,590,016.84	0.00
5A-1	76112BUL2	Senior	Fix-30/360	80,000,000.00	5.378328	1,269,893.39	358,555.20	1,628,448.59	0.00	78,730,106.61	0.00
5A-2	76112BUM0	Senior	Fix-30/360	3,933,000.00	5.378328	62,431.13	17,627.47	80,058.60	0.00	3,870,568.87	0.00
R	76112BUN8	Senior	Fix-30/360	100.00	4.949906	100.00	0.55	100.55	0.00	0.00	0.00


M-1	76112BUP3	Mezzanine	Fix-30/360	6,370,000.00	5.215605	797.35	27,686.17	28,483.52	0.00	6,369,202.65	0.00
M-2	76112BUQ1	Mezzanine	Fix-30/360	4,440,000.00	5.215605	555.77	19,297.74	19,853.51	0.00	4,439,444.23	0.00
M-3	76112BUR9	Mezzanine	Fix-30/360	2,702,000.00	5.215605	338.22	11,743.80	12,082.02	0.00	2,701,661.78	0.00
B-1	76112BUS7	Junior	Fix-30/360	2,124,000.00	5.215605	265.87	9,231.62	9,497.49	0.00	2,123,734.13	0.00
B-2	76112BUT5	Junior	Fix-30/360	1,351,000.00	5.215605	169.11	5,871.90	6,041.01	0.00	1,350,830.89	0.00
B-3	76112BUU2	Junior	Fix-30/360	965,513.57	5.215605	120.86	4,196.45	4,317.31	0.00	965,392.71	0.00


Totals				386,070,613.57		5,151,986.15	1,677,992.00	6,829,978.15	0.00	380,918,627.42	0.00

Deutsche Bank National Trust				Distribution Date:	7/19/05
Santa Ana, CA 92705	*GMAC*	*Mortgage*	*Corporation*
Attn:

Page 2

GMACM MORTGAGE LOAN TRUST 2005-AR4 GMACM Mortgage Pass-Through Certificates, Series 2005-AR4

Principal Distribution Detail

		Original	Beginning	Scheduled		Unscheduled	Net	Current	Ending	Ending
		Certificate	Certificate	Principal	Accretion	Principal	Principal	Realized	Certificate	Certificate
Class	Cusip	Balance	Balance	Distribution	Principal	Adjustments	Distribution	Losses	Balance	Factor


1-A	76112BUD0	18,893,000.00	18,893,000.00	416,463.28	0.00	0.00	416,463.28	0.00	18,476,536.72	0.97795674176
2A-1	76112BUE8	56,050,000.00	56,050,000.00	821,894.27	0.00	0.00	821,894.27	0.00	55,228,105.73	0.98533640902
2A-2	76112BUF5	2,739,000.00	2,739,000.00	40,163.58	0.00	0.00	40,163.58	0.00	2,698,836.42	0.98533640902
3A-1	76112BUG3	144,100,000.00	144,100,000.00	2,379,836.96	0.00	0.00	2,379,836.96	0.00	141,720,163.04	0.98348482329
3A-2	76112BUH1	7,061,000.00	7,061,000.00	116,613.66	0.00	0.00	116,613.66	0.00	6,944,386.34	0.98348482329
4A-1	76112BUJ7	52,750,000.00	52,750,000.00	40,359.54	0.00	0.00	40,359.54	0.00	52,709,640.46	0.99923489015
4A-2	76112BUK4	2,592,000.00	2,592,000.00	1,983.16	0.00	0.00	1,983.16	0.00	2,590,016.84	0.99923489015
5A-1	76112BUL2	80,000,000.00	80,000,000.00	1,269,893.39	0.00	0.00	1,269,893.39	0.00	78,730,106.61	0.98412633262
5A-2	76112BUM0	3,933,000.00	3,933,000.00	62,431.13	0.00	0.00	62,431.13	0.00	3,870,568.87	0.98412633262
R	76112BUN8	100.00	100.00	100.00	0.00	0.00	100.00	0.00	0.00	0.00000000000


M-1	76112BUP3	6,370,000.00	6,370,000.00	797.35	0.00	0.00	797.35	0.00	6,369,202.65	0.99987482741
M-2	76112BUQ1	4,440,000.00	4,440,000.00	555.77	0.00	0.00	555.77	0.00	4,439,444.23	0.99987482741
M-3	76112BUR9	2,702,000.00	2,702,000.00	338.22	0.00	0.00	338.22	0.00	2,701,661.78	0.99987482741
B-1	76112BUS7	2,124,000.00	2,124,000.00	265.87	0.00	0.00	265.87	0.00	2,123,734.13	0.99987482741
B-2	76112BUT5	1,351,000.00	1,351,000.00	169.11	0.00	0.00	169.11	0.00	1,350,830.89	0.99987482741
B-3	76112BUU2	965,513.57	965,513.57	120.86	0.00	0.00	120.86	0.00	965,392.71	0.99987482741


Totals		386,070,613.57	386,070,613.57	5,151,986.15	0.00	0.00	5,151,986.15	0.00	380,918,627.42

Deutsche Bank National Trust				Distribution Date:	7/19/05
Santa Ana, CA 92705	*GMAC*	*Mortgage*	*Corporation*
Attn:

Page 3

GMACM MORTGAGE LOAN TRUST 2005-AR4 GMACM Mortgage Pass-Through Certificates, Series 2005-AR4

Interest Distribution Detail

	Beginning	Pass	Accrued	Cumulative		Total	Net	Unscheduled
	Certificate	Through	Optimal	Unpaid	Deferred	Interest	Prepayment	Interest	Interest
Class	Balance	Rate (%)	Interest	Interest	Interest	Due	Int Shortfall	Adjustment	Paid


1-A	18,893,000.00	4.949906	77,932.15	0.00	0.00	77,932.15	0.00	0.00	77,932.15
2A-1	56,050,000.00	5.377828	251,189.37	0.00	0.00	251,189.37	0.00	0.00	251,189.37
2A-2	2,739,000.00	5.377828	12,274.89	0.00	0.00	12,274.89	0.00	0.00	12,274.89
3A-1	144,100,000.00	5.114523	614,169.01	0.00	0.00	614,169.01	0.00	0.00	614,169.01
3A-2	7,061,000.00	5.114523	30,094.71	0.00	0.00	30,094.71	0.00	0.00	30,094.71
4A-1	52,750,000.00	5.163260	226,968.33	0.00	0.00	226,968.33	0.00	0.00	226,968.33
4A-2	2,592,000.00	5.163260	11,152.64	0.00	0.00	11,152.64	0.00	0.00	11,152.64
5A-1	80,000,000.00	5.378328	358,555.20	0.00	0.00	358,555.20	0.00	0.00	358,555.20
5A-2	3,933,000.00	5.378328	17,627.47	0.00	0.00	17,627.47	0.00	0.00	17,627.47
R	100.00	4.949906	0.55	0.00	0.00	0.55	0.00	0.00	0.55


M-1	6,370,000.00	5.215605	27,686.17	0.00	0.00	27,686.17	0.00	0.00	27,686.17
M-2	4,440,000.00	5.215605	19,297.74	0.00	0.00	19,297.74	0.00	0.00	19,297.74
M-3	2,702,000.00	5.215605	11,743.80	0.00	0.00	11,743.80	0.00	0.00	11,743.80
B-1	2,124,000.00	5.215605	9,231.62	0.00	0.00	9,231.62	0.00	0.00	9,231.62
B-2	1,351,000.00	5.215605	5,871.90	0.00	0.00	5,871.90	0.00	0.00	5,871.90
B-3	965,513.57	5.215605	4,196.45	0.00	0.00	4,196.45	0.00	0.00	4,196.45


Totals	386,070,613.57		1,677,992.00	0.00	0.00	1,677,992.00	0.00	0.00	1,677,992.00

Deutsche Bank National Trust				Distribution Date:	7/19/05
Santa Ana, CA 92705	*GMAC*	*Mortgage*	*Corporation*
Attn:

Page 4

GMACM MORTGAGE LOAN TRUST 2005-AR4 GMACM Mortgage Pass-Through Certificates, Series 2005-AR4

Current Payment Information
Factors per $1,000

		Original	Beginning Cert.			Ending Cert.	Pass
		Certificate	Notional	Principal	Interest	Notional	Through
Class	Cusip	Balance	Balance	Distribution	Distribution	Balance	Rate (%)


1-A	76112BUD0	18,893,000.00	1,000.000000000	22.043258238	4.124921755	977.956741762	4.949906
2A-1	76112BUE8	56,050,000.00	1,000.000000000	14.663590978	4.481523019	985.336409022	5.377828
2A-2	76112BUF5	2,739,000.00	1,000.000000000	14.663590978	4.481523019	985.336409022	5.377828
3A-1	76112BUG3	144,100,000.00	1,000.000000000	16.515176706	4.262102767	983.484823294	5.114523
3A-2	76112BUH1	7,061,000.00	1,000.000000000	16.515176706	4.262102767	983.484823294	5.114523
4A-1	76112BUJ7	52,750,000.00	1,000.000000000	0.765109853	4.302717072	999.234890147	5.163260
4A-2	76112BUK4	2,592,000.00	1,000.000000000	0.765109853	4.302717072	999.234890147	5.163260
5A-1	76112BUL2	80,000,000.00	1,000.000000000	15.873667377	4.481939967	984.126332623	5.378328
5A-2	76112BUM0	3,933,000.00	1,000.000000000	15.873667377	4.481939967	984.126332623	5.378328
R	76112BUN8	100.00	1,000.000000000	1,000.000000000	5.500000000	0.000000000	4.949906


M-1	76112BUP3	6,370,000.00	1,000.000000000	0.125172591	4.346337733	999.874827409	5.215605
M-2	76112BUQ1	4,440,000.00	1,000.000000000	0.125172591	4.346337733	999.874827409	5.215605
M-3	76112BUR9	2,702,000.00	1,000.000000000	0.125172591	4.346337733	999.874827409	5.215605
B-1	76112BUS7	2,124,000.00	1,000.000000000	0.125172591	4.346337733	999.874827409	5.215605
B-2	76112BUT5	1,351,000.00	1,000.000000000	0.125172591	4.346337733	999.874827409	5.215605
B-3	76112BUU2	965,513.57	1,000.000000000	0.125172591	4.346339741	999.874827409	5.215605


Totals		386,070,613.57	1,000.000000000	13.344673148	4.346334430	986.655326852

GMACM MORTGAGE LOAN TRUST 2005-AR4 8-K