New-homesales in the Washington area declined 15 percent in June from May and were 10 percent lower than a year earlier, Housing Data Reports said.

Most of the decline came in condominium sales, which were off 25 percent from a year ago.

Housing Data Reports, local new-home specialists, said that sales of single-family homes and town houses have stabilized since the beginning of the year. June sales in this category were 4 percent higher than a year earlier but down 6 percent from May, HDR said.

Recent house sales in the District of Columbia included the following, selected at random from the information gathered by Rufus S. Lusk & Son Inc.: Northwest

Mr. and Mrs. C. F. Withington sold a house at 3411 Ashley Ter. for $200,000 to Robert C. Eager and Mary C. Carter. B F. Saul Co. placed a mortgage of $150,000 for 30 years.

Mr. and Mrs. J. W. Kaempfer sold a house at 2728 Chain Bridge Rd. for $326,500 to Douglas J. Montanaro. Citicorp Homeowners Inc. placed a mortgage of $261,200 for five years.

Mr. and Mrs. P. A. Bradford sold a house at 2830 Chesterfield Place for $410,000 to Ilya and Kate Prizel. The seller took back a note for $10,000 at 12 percent for five years.

E. B. Sutton sold a house at 320 Decatur St. for $58,000 to Mr. and Mrs. Eric V. Jackson. The seller took back a note for $37,500 at 13 percent for 10 years.

D. J. Veal Jr. sold a house at 221 Florida Ave. for $117,000 to Mr. and Mrs. Nathaniel Randolph Jr. The seller took back a note for $100,000 for five years.

P. D. Myers sold a house at 1432 Florida Ave. for $23,700 to Judith G. Watkins. The buyer assumed a trust of $23,500 and another one for $21,000.

Gertrude Harris and others sold a house at 710 Girard St. for $27,000 to Sarah T. Boyd. The sellers took back a note for $22,950 at 15 percent for 30 years.

Mr. and Mrs. Henri Billy sold a house at 1716 Irving St. for $90,500 to Rene Sr., Candida and Cecelia E. Gonzales and Dennis M. and Marina G. Lord. The seller took back a note for $27,128 at 12 percent for 10 years. The buyers assumed a trust of $48,500.

B. P. Salvo and others sold a house at 4210 Jenifer St. for $93,500 to John R. Jr. and Lisa M. Hoke. B. F. Saul Co. placed a mortgage of $88,800 for 30 years.

Mr. and Mrs. Mitchell Rogovin sold a house at 4500 Klingle St. for $235,000 to Leffert Lefferts. Columbia First Federal Savings and Loan Association placed a mortgage of $38,500 for 30 years. The seller took back a note for $125,000 at 12 percent for five years.

L. N. Brandt sold a house at 4435 Linnean St. for $255,000 to Mr. and Mrs. Eldon Greenberg. The seller took back a note for $155,000 at 12 7/8 percent for 25 years.

Mr. and Mrs. J. B. Griffith sold a house at 5039 Lowell St. for $405,000 to Mr. and Mrs. Townsend W. Hoopes.

H. D. Johnson sold a house at 1644 Monroe st. for $84,000 to Barbara Siktar. The seller took back a note for $78,500 at 12 percent for five years.

G. R. Verner sold a house at 2715 O St. for $175,000 to Jane C., Michael C., Charles B. and Scott H. Johnson. B. F. Saul Co. placed a mortgage of $100,000 for 30 years.

H. H. Lyon sold a house at 3007 Porter St. for $145,000 to Robert H. Witten and Deborah A. Potter. The seller took back a note for $125,000 at 11 percent for 10 years.

Mr. and Mrs. M. M. Bartolini sold a house at 456 Ridge St. for $23,000 to Mavis Jefferson. The seller took back a note for $19,000 at 15 percent for four years.

M. J. Edwards sold a house at 460 Ridge St. for $25,000 to Philip A. Seagroves. The seller took back a note for $21,000 at 15 percent for five years.

Jean Weiner and others sold a house at 4206 River Rd. for $189,341 to Alan B. Moldawer Jr.

Mr. and Mrs. J. A. Strand sold a house at 3202 Rowland Place for $240,000 to Constance V. Strand. McLachlen National Bank placed a mortgage for $180,000 for two years. The sellers took back a note for $60,000 at 10 percent for two years.

Kettler Bros. Inc. sold a house at 4361 Westover Place for $207,000 to Mr. and Mrs. Daniel J. Callahan III. Perpetual American Federal Savings & Loan Association placed a mortgage of $110,000 for 30 years.

Willie Hill and others sold a house at 5618 1st St. for $77,000 to Kenneth R. Smith Sr. Cameron-Brown Co. placed an FHA mortgage of $69,300.

Mr. and Mrs. E. H. Ordman sold a house at 3609 14th St. for $41,000 to Nathaniel L., Larry L. and Connie Y. Caine.

Constance Jordan sold a house at 3700-04 14th St. for $95,000 to Mr. and Mrs. Israel Lopez. The seller took back a note for $70,000 at 12 percent for 10 years.

Mr. and Mrs. Axel deTristan sold a house at 1308 27th St. for $145,000 to Mr. and Mrs. Wolf Saperstein.

Mr. and Mrs. Lindsey Grant sold a house at 6605 31st Place for $158,000 to Mr. and Mrs. Jast T. Connor. Kissell-Virginia Co. placed a VA mortgage of $128,000 at 15 1/2 percent for 30 years.

Mr. and Mrs. R. C. Eager sold a house at 1654 34th St. for $173,800 to Schuyler Beebe.

Mr. and Mrs. R. C. Fisk sold a house at 4310 42nd St. for $340,000 to Mr. and Mrs. Richard R. Betchley. Riggs National Bank placed a mortgage of $200,000 for 30 years. The sellers took back a note for $100,000 at 12 percent for five years. Southwest

Jack Spicer Real Estate Inc. sold a house at 145 Elmira St. for $47,250 to Mr. and Mrs. Joseph M. Warren Jr. Northeast

J. E. Peery and others sold a house at 3112 Adams St. for $50,000 to Joseph L. Moore. Inland Mortgage Co. placed an FHA mortgage of $49,000.

K. R. Smith and others sold a house at 5561 Chillum Place for $17,740 to Grace A. Smith. Industrial Bank of Washington placed a mortgage of $22,000 at 15 percent for 10 years.

D. E. DePould sold a house at 1438 F St. for $99,500 to J. Hallock Northcott. The seller took back a note for $10,000 at 12 1/2 percent for one year.

Mr. and Mrs. G. B. Craighill and others sold a house at 1445-47 Holbrook St. for $32,721 to Walter T. Flournoy. Washington Federal Savings & Loan Association placed an FHA mortgage of $27,750.

Mr. and Mrs. Anselm Fisher sold a house at 616 Massachusetts Ave. for $130,000 to Larry D. Quillian. The sellers took back a note for $100,000 at 12 percent for eight years.

Mr. and Mrs. E. R. Walker sold a house at 2827 Myrtle Ave. for $67,500 to Mr. and Mrs. Horace C. Bryant. Inland Mortgage Corp. placed an FHA morgage of $66,500.

M. A. Ortiz sold a house at 15 Rhode Island Ave. for $65,000 to Lucner Cinada and K. Sridharan. National Morgage Funding Corp. placed a mortgage of $61,750 for 30 years.

V. P. Lowe III and others sold a house at 1243 Simms Place for $67,000 to Bobbie J. Kimble. Charter Mortgage Corp. placed an FHA morgage of $66,000.

J. B. Thornton Jr. sold a house at 1916 Third St. for $60,000 to Mr. and Mrs. John S. Matthews. The seller took back a note for $15,000 for five years.

V. D. Diggins sold a house at 433 Fourth St. for $80,000 to Mary L. Boss and Patricia M. Hanson. The seller took back a note for $64,000 at 13 percent for five years.

Mr. and Mrs. G. W. Valpey-Toussignant sold a house at 611 Fourth St. for $74,000 to John P. and Leo A. Phelan. The sellers took back a note for $1,555 at 10 percent for six years.

Mr. and Mrs. L. W. Utz sold a house at 3932 Seventh St. for $68,000 to Janet E. Harrell and Sylvia A. Anderson. Guaranty Mortgage Corp. placed an FHA mortgage of $67,000.

D. W. Hale sold a house at 226 Ninth St. for $110,000 to Marsha S. Jackson and Judith A. Finger. The seller took back a note for $95,000 for 10 years.