The average interest rate on 30-year fixed-rate mortgages edged up to 7.83 percent this week.

The average was up from 7.80 percent last week, according to a weekly survey released Thursday by Freddie Mac, the mortgage company.

Mortgage rates generally have been climbing. So far this year, average rates for 30-year mortgages have hit a low of 6.74 percent set at the end of January and a high of 8.15 percent set two weeks ago.

Fifteen-year mortgages, a popular option for refinancing, averaged 7.45 percent this week, also up from the average of 7.43 percent last week.

On one-year adjustable-rate mortgages, lenders were asking an average initial rate of 6.18 percent this week, down from 6.22 percent the previous week.

Separately, the Mortgage Bankers Association said that mortgage loan applications for the week ending Aug. 27 increased 4.5 percent from the previous week but were down 25.7 percent compared with the same week last year.

PERSONNEL . . . The Prince William Association of Realtors in Manassas named Denise Nebb executive vice president.

UPCOMING EVENTS . . . The board of directors and advisory committee of the National Multi Housing Council will hold its quarterly meeting Sept. 13 and 14 at the Willard Inter-Continental Hotel in Washington. Visit www.nmhc.org/meetings/default.html for registration and more information . . . The Property Management Association in Bethesda and other co-sponsors will hold their all-day PMExpo '99 Sept. 16 on the Club Level of Redskins Stadium in Landover. The expo will include seminars and a showcase of services for the management of real estate properties, including telecommunications, security and landscaping services. The cost to attend all or one of the seminars is $45. For more information, contact Sharla Warren at 301-657-9200 . . . The Prince William Association of Realtors in Manassas is offering classes to real estate agents interested in becoming real estate brokers. Classes begin Wednesday at the Realtors Building, 9213 Center St., Manassas. The 45-hour course will be taught Sept. 8, 15, 23 and 29 and Oct. 6 and 14. Tuition is $175, plus $31.30 for the textbook. For more information, call Denise Nebb at 703-368-8177.

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