The average interest rate on 30-year fixed-rate mortgages rose to 7.88 percent this week.

The average was up from 7.83 percent last week, according to a weekly survey released Thursday by the mortgage company Freddie Mac.

Mortgages rates generally have been climbing. So far this year, average rates on a 30-year mortgage have ranged from a low of 6.74 percent at the end of January and a high of 8.15 percent in mid-August.

Fifteen-year mortgages, a popular option for refinancing, averaged 7.49 percent this week, also up from the average of 7.45 percent last week.

On one-year adjustable-rate mortgages, lenders were asking an average initial rate of 6.21 percent this week, up from 6.18 percent the previous week.

UPCOMING EVENTS . . . The Hollin Hills 50th Anniversary House Tour will take place on Sept. 18 from 10 a.m. to 4 p.m. Eighteen of the award-winning contemporary houses, south of Old Town Alexandria, can be visited; tickets are $15 and can be bought on the day of the tour at Fort Hunt and Paul Spring roads, Alexandria. For more information, call J.G. Harrington at 703-768-6987, or go online at . . . The Maryland Association of Realtors in Annapolis will hold its 47th annual Real Estate Conference Sept. 13 to 15 at the Ocean City Convention Center in Ocean City, Md. The program will feature classes, networking opportunities and an exhibition with more than 100 vendors. For a full schedule of each day's events and courses, call 1-800-532-9627, and request document No. 2310 . . . The Prince William Association of Realtors Real Estate School in Manassas is offering courses for those interested in becoming licensed real estate appraisers. The first portion of the 90-hour course begins Sept. 14 and runs Tuesdays and Thursdays from 6 to 10 p.m., through Dec. 2. Tuition is $350 (a later portion costs $150) and includes textbooks. For more information, call Denise Nebb at 703-368-8177 . . . W.C. & A.N. Miller Cos. will hold its ninth annual Spring Valley 5K Race to benefit Children's Hospital on Sept. 18. The race starts at 8:30 a.m. at the corner of Warren and 50th streets NW. The entrance fee is $17 a person. For more information, call 202-895-2705 or 301-871-0005 . . . The Washington Metropolitan Chapter of Community Associations Institute will host a series of classes for homeowners and community leaders on consumer education in community association governance and operations. All-day classes will be held Sept. 18 at the Hampton Oaks Homeowners Association at 80 Northampton Blvd., Stafford, Va., and on Sept. 25 at Bernard's Landing Conference Center, 775 Ashmeade Rd., Moneta, Va. For more information, call 703-750-3644.

PERSONNEL . . . The Advisory Services Group of Cushman & Wakefield Inc. in Washington named James S. Reeb and Scott Redabaugh to head its new mid-Atlantic regional office in McLean . . . Gulick Group of Reston hired Curtis Low to head its finance and accounting department.

Send realty announcements to Brian Krebs, Real Estate Notes, The Washington Post, 1150 15th St. NW, Washington, D.C. 20071.