Download a PDF of the September 2017 Peninsula Market Update.
San Mateo County Real Estate Market Update – September 2017
Summary: With September in the books, we’re seeing small signs that the San Mateo County real estate market is easing off the frenzied pace of this summer while remaining a strong seller’s market. Most metrics remain near record highs. Compared with last month, the average overbid % is down, inventory is up, and the average days on market has ticked up slightly. The changes are modest, but favorable to buyers.
Details: The San Mateo County single family homes median sales price rose from last month, ending at $1,395,000. Overbids dropped slightly, averaging 107.5%
The median sale price of condos and townhomes was down 7% from last month, ending at $768,000. Overbids for the month averaged 104.5%, slightly less than August.
The number of new single-family home listings was up 21.3% from August. Comparing rolling 6-month averages evens out the seasonality of real estate sales, and shows inventory down 7.5% overall compared with the same period last year. Closed sales were down 12% from August, but up 0.9% comparing a rolling 6-month average to last year. These factors have led to a modest increase in inventory levels, up to 1.3 months which is a 30% increase from last month, though down 32% year over year.
There was a huge 19% increase in the number of new condos/townhomes coming on the market this September compared with August, though year over year the number is down 14%. The rolling 6-month change is even more modest – down 7.1%. September inventory stands at 0.9 months, a decline of 44% compared to September 2016, and 41% comparing a rolling 3-month average.
The Numbers:
Single Family Residences (SFR) | % Change Year Over Year | Condos | ||
Median Sales Price ($USD) | $1,395,000 | 8.9% | $768,000 | 5.9% |
Overbids (%) | 107.50% | 4.9% | 104.50% | 0.0% |
New Listings (#) | 540 | 3.65% | 151 | -14.20% |
Homes Sold (#) | 350 | -5.66% | 108 | -14.96% |
Months of Inventory | 1.3 | -31.58% | 0.9 | -43.75% |
Average Days on Market (DOM) | 25 | -7.41% | 24 | 4.35% |
Median Days on Market (DOM) | 12 | -20.00% | 13 | -13.33% |
MEDIAN SALES PRICE
Single Family Homes: +9.1% rolling 3-month average compared to same period last year


MONTHS OF SUPPLY
Single Family Homes: -34.6% rolling 3-month average compared to same period last year

NEW LISTINGS & NUMBER OF SALES
Single Family Homes: Listings -7.5%, Sales +0.9% rolling 6-month average compared to same period last year
Condo: Listings: -7.1%, Sales +2.75% rolling 6-month average compared to same period last year
MEDIAN PERCENT OF LIST PRICE RECEIVED
Single Family Homes: +3.2% rolling 3-month average compared to same period last year.
NOTE: This data adjusted to remove two extreme outlying sales in Half Moon Bay.
Condo: +0.67% rolling 3-month average compared to same period last year
DAYS ON MARKET (DOM)
Single Family Homes: -18% (avg) -14% (med) rolling 3-month average compared to same period last year
Condo: -5% (avg) -12% (med) rolling 3-month average compared to same period last year