Home sales in Prince George's County in April were 11 percent below the level a year earlierbut 11 percent higher than in March, the Prince George's County Board of Realtors reported. Year-to-date figures were 27 percent below those for 1981.

The number of homes reported sold in April was 472, compared with 535 a year earlier.

Average prices rose by 3 percent over the year, from $70,300 to $72,500 for single-family homes and from $42,000 to $43,300 for condominiums.

Recent house sales in Prince George's County, selected at random from the information gathered by Rufus S. Lusk & Son Inc., included these: Bowie

Mr. and Mrs. M. G. McMillan sold a house at 12809 Beaverdale La. for $83,500 to Mr. and Mrs. Ivan A. Cobo. Brentwood

Mr. and Mrs. K. H. Clinton sold a house at 4321 Lawrence St. for $45,000 in cash to Mr. and Mrs. David P. Thate. Camp Springs

Mr. and Mrs. J. H. Herman sold a house at 6514 Northam Rd. for $75,000 to Mr. and Mrs. James H. Bynum. Cameron-Brown Co. placed a VA mortgage of $75,000 at 16 1/2 percent for 30 years. Clinton

Mr. and Mrs. P. T. Dougherty sold a house at 11602 Zareh Dr. for $97,000 to Mr. and Mrs. Randolph Howard Jr. Guaranty Mortgage Corp. placed an FHA mortgage of $89,500 at 15 1/2 percent for 30 years. Hyattsville

Mr. and Mrs. C. E. King sold a house at 7911 Legation Rd. for $65,000 to Mr. and Mrs. William E. LaChance Sr. Columbia First Federal Savings and Loan Association placed a mortgage of $55,600 for 30 years.

Mr. and Mrs. F. D. Baden sold a house at 3611 65th Ave. for $69,950 to Mr. and Mrs. Roger T. Lee. The sellers took back a note for $51,950 at 12 percent for 30 years.

Mr. and Mrs. M. J. Stith sold a house at 2906 56th Place for $81,950 to Mr. and Mrs. Tim Heckman. The sellers took back a note for $17,850 at 11 1/2 percent for seven years. Laurel

Mr. and Mrs. E. B. Noerr sold a house at 606 Main St. for $63,000 to Mr. and Mrs. Charles L. Bradley. The sellers took back a note for $53,000 at 13 percent for seven years.

Mr. and Mrs. Robert Lenham sold a house at 12215 Valerie La. for $105,236 in cash to Mr. and Mrs. Eugene R. Morris. Mount Rainier

J. H. Miller and others sold a house at 3501 Rhode Island Ave. for $50,000 in cash to Charles D. Ingram. Oxon Hill

Mr. and Mrs. B. C. Cachuela sold a house at 141 Onondaga Dr. for $66,950 to Mr. and Mrs. Herbert C. Bruce Jr. Standard Federal Savings and Loan Association placed a mortgage of $62,950 for 23 years. The buyers assumed an original trust of $36,500.

Mr. and Mrs. J. D. Bell sold a house at 6803 Leyte Dr. for $57,500 to Mr. and Mrs. Vincent M. Dizo. Inland Mortgage Corp. placed a mortgage of $54,600 for 30 years. CAPTION: Picture, This house at 6514 Northam Rd., Camp Springs, was sold recently for $75,000. By M.C. Valada for The Washington Post