Treasure Isle, Foster City Housing Market · 2026

Data through Aug 2026

Data curated by Melanie Tan, 8 Blocks Real Estate · How this data works

Treasure Isle, Foster City Market Snapshot

Treasure Isle is a balanced market, but competition has been picking up. Here's where things stand:

Based on 10 homes sold in the 3 months ending August 2026. Includes all residential types (SFH, condo, townhouse, multi-family, and others). Enough to see the trend, but individual sales still move the median. Updated weekly.

Data through August 2026

SalesWhat are homes selling for?
Median Sale Price
$1.77M
▲ Up 7.4% from August 2025
Up $122K from August 2025
Homes Sold
10
Sold in the last 3 months. More sales = more reliable data.
Your CostWhat would you actually pay each month?
Monthly Payment
~$11,743/mo
7.28% · 30yr fixed · 20% down
Payment Breakdown
  • Principal & Interest$9,711
  • Property Tax$1,848
  • Insurance$183
CompetitionHow competitive is it right now?
Days on Market
43 days
▼ 12 fewer days than in August 2025
Buyers have time to decide
Sale-to-List Ratio
102.9%
▲ Up from 100.8% in August 2025
Selling at or near asking price
% Sold Over Asking
60%
More than half of homes sold above their asking price
Active Listings
1
▼ Down 73.1% from August 2025
About 0.3 months of supply. Very low, limited options for buyers

Market Trends

See how prices, monthly costs, and mortgage rates have moved in Treasure Isle.

Median Sale Price
Up 7.4% year-over-year in Treasure Isle. Based on 10 sales in the last 3 months.
Homes Sold
About the same sales volume as a year ago in Treasure Isle.
Total Monthly Payment
Estimated monthly cost is up 8% from a year ago in Treasure Isle, reflecting changes in both price and mortgage rates.

Includes principal, interest, estimated CA property tax (~1.25%), and estimated insurance (~$2,200/yr). HOA fees not included.

30-Year Fixed Mortgage Rate (National Avg.)
National average currently at 7.28%. Your actual rate depends on your credit, down payment, and loan type.

Frequently asked questions about Treasure Isle, Foster City

Is now a good time to buy in Treasure Isle, Foster City?

Treasure Isle, Foster City is balanced but competition is picking up. It remains a reasonable environment for buyers, though acting decisively on well-priced homes is becoming more important.

How do Treasure Isle, Foster City home prices compare to the Bay Area average?

At $1.77M, Treasure Isle, Foster City's median is close to the Bay Area average of $1.78M.

Within Foster City, this area trades about 25% above the city-wide median of $1.42M.

By home type:

  • Condos at $1.19M
  • Single-family homes at $1.88M
What price range should I budget for in Treasure Isle, Foster City?

Prices in Treasure Isle, Foster City depend heavily on home type and specific neighborhood. Median sale prices by type:

  • Condos at $1.19M
  • Single-family homes at $1.88M

Individual listings vary widely based on location, size, and condition. The best calibration is to narrow to a few specific neighborhoods you are considering and look at recent sales there.

How competitive is Treasure Isle, Foster City for buyers?

Treasure Isle, Foster City is a balanced market where neither side dominates:

  • Homes sell about 3% above asking on average
  • 60% close above list price
  • 43 days typical time to go pending
  • 30% of listings have had a price reduction

Buyer strategy: contingencies are more accepted, and there is time to tour and negotiate without extreme pressure.

What will my total monthly cost be on a median-priced Treasure Isle, Foster City home?

At $1.77M with 20% down at 7.28%, your estimated total monthly cost is approximately $11,743:

  • $9,711 principal and interest
  • $1,848 property tax (California 1.25% effective rate)
  • $183 homeowners insurance

HOA fees are extra. Condo buyers typically budget an additional $300 to $700 per month for HOA, and townhome HOAs run $200 to $500.

No noise, just a quick weekly read on what's going on in your market.

Melanie Tan
Melanie Tan
DRE #02250755
“I help Bay Area buyers and sellers make confident moves with the latest market data, real local expertise, and the patience to find what's actually right for you, not the fastest close.”
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