512 Middlesex Rd is a 1,010 square foot house on a 5,130 square foot lot with 3 bedrooms and 1 bathroom. Based on Redfin's Belmont data, we estimate the home's value is $1,649,034.
Single-familyProperty Type
1953Year Built
5,130 sq ftLot Size
$1,633Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,649,034
$35K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 11.2% lower than the average sale price ($1.86M) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$7,302 (+3.0%)
$399,782 + $130,817
$530,599
2024
$7,090 (−2.1%)
$399,782 + $130,817
$530,599
2023
$7,239 (+217.4%)
$391,944 + $128,253
$520,197
2022
$2,281 (+4.7%)
$384,260 + $125,739
$509,999
2021
$2,178 (−0.2%)
$25,403 + $63,274
$88,677
2020
$2,181 (+6.0%)
$24,905 + $62,034
$86,939
2019
$2,057 (+6.0%)
$24,650 + $61,398
$86,048
2018
$1,941 (+7.0%)
$24,167 + $60,195
$84,362
2017
$1,814 (+5.3%)
$23,230 + $57,858
$81,088
2016
$1,723 (+1.0%)
$23,230 + $57,858
$81,088
2015
$1,706 (+4.4%)
$22,775 + $56,724
$79,499
2014
$1,634 (+4.4%)
$21,994 + $54,778
$76,772
2012
$1,566 (+5.1%)
$21,895 + $54,531
$76,426
2011
$1,489 (+20.7%)
$21,466 + $53,462
$74,928
2010
$1,234 (+7.7%)
$21,046 + $52,414
$73,460
2009
$1,146 (+1.4%)
$20,889 + $52,023
$72,912
2008
$1,130
$20,939 + $52,147
$73,086
Tax history for 512 Middlesex Rd
Year
Property tax
Land + Additions
Assessment*
2025
$7,302 (+3.0%)
$399,782 + $130,817
$530,599
2024
$7,090 (−2.1%)
$399,782 + $130,817
$530,599
2023
$7,239 (+217.4%)
$391,944 + $128,253
$520,197
2022
$2,281 (+4.7%)
$384,260 + $125,739
$509,999
2021
$2,178 (−0.2%)
$25,403 + $63,274
$88,677
2020
$2,181 (+6.0%)
$24,905 + $62,034
$86,939
2019
$2,057 (+6.0%)
$24,650 + $61,398
$86,048
2018
$1,941 (+7.0%)
$24,167 + $60,195
$84,362
2017
$1,814 (+5.3%)
$23,230 + $57,858
$81,088
2016
$1,723 (+1.0%)
$23,230 + $57,858
$81,088
2015
$1,706 (+4.4%)
$22,775 + $56,724
$79,499
2014
$1,634 (+4.4%)
$21,994 + $54,778
$76,772
2012
$1,566 (+5.1%)
$21,895 + $54,531
$76,426
2011
$1,489 (+20.7%)
$21,466 + $53,462
$74,928
2010
$1,234 (+7.7%)
$21,046 + $52,414
$73,460
2009
$1,146 (+1.4%)
$20,889 + $52,023
$72,912
2008
$1,130
$20,939 + $52,147
$73,086
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jan 14, 2019 • Final
Res
Remove and replace the sewer lateral.
Plumbing
Apr 24, 2007 • Final
Res
Replace a water heater in the same location within an interior closet.
Plumbing
Water heater
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Bathroom Information
# of Full Baths: 1
Heating & Cooling
Air Conditioning Type: Central
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 5
Exterior
Exterior Information
Construction Type: Wood/Steel
Building Construction Quality: Good
Property Information
Subdivision Name: STERLING DOWNS BELMONT
Living Sq. Ft: 1,010
Ground Floor Sq. Ft: 1,010
Building Sq. Ft: 1,410
# of Stories: 1
Legal Description: LOT 9 BLOCK 16 STERLING DOWNS RSM 35/25 26 27 CITY OF BELMONT
Parking & Garage Information
# of Parking Spaces: 2
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 400
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,130
Legal Lot Number: 9
Legal Block Number: 16
Acres: 0.1178
Depth Footage: 90
Front Footage: 57
Zoning Code: R10006
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 3
Baths: 1.0
Sq. Ft.: 1,010
Stories: 1.0
Lot Size: 5,130 square feet
Style: Single Family Residential
Year Built: 1953
Year Renovated: 1953
County: San Mateo County
APN: 040272150
Home facts updated by county records on Jul 15, 2026
Around this home
Schools
Nesbit Elementary School
Public K-8 • Assigned • 0.2mi
6/10
Carlmont High School
Public 9-12 • Assigned • 1.5mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
Belmont buyers are still moving quickly when the right home hits the market. Homes averaged just 12 days on market and sold for 106% of asking price in June. If you're thinking about selling, presentation and pricing still make a big difference.