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ActiveCondo

$1,268,000

20 Madison Ave Apt 213, San Mateo 94402

Beds2
Baths2
Sqft1,378
DOM9
No Photos Available

AddressIntel AI Briefing

This modern 2007-built condo trades at a premium compared to size-matched neighborhood sales, resulting in limited flip potential. It serves best as a premium rental play with an estimated yield of $4,403 per month, although the lack of other building inventory prevents a bulk purchase strategy.

Property Permit History

No permit history found directly associated with this property's address.

Recent Neighborhood Remodeling (San Mateo)

2026-08-211241 SHAFTER ST SAN MATEO 94402-2901 CA
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$22,000Issued
2026-08-211133 WAYNE WAY SAN MATEO 94403-1564 CA
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$30,000Issued
2026-08-211241 SHAFTER ST SAN MATEO 94402-2901 CA
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$35,000Issued
2026-08-21510 BOREL AVE SAN MATEO 94402-3406 CA
Single Family (Alteration/Repair) - Alter
$28,882Issued
2026-08-202614 ALAMEDA DE LAS PULGAS SAN MATEO 94403-2652 CA
Single Family (Alteration/Repair) - Kitchen & Bath Remodel (Flat)
$7,000Issued
2026-08-20406 AVILA RD SAN MATEO 94402-2822 CA
Single Family (Addition) - Add/Alter
$91,714Issued

Parcel & Zoning Info

APN123640130
Official Lot Sqft1,322
Zoning CodeNO DATA ASSIGNED
SB 9 StatusN/A

Condo Investment Snapshot

Value Score12/100
Price / Sqft$920 vs $773 mkt
Price vs Market+19% Above market
Est. Rent$4,403/mo

Price positioning vs. 44 recent comparable condo/townhome sales in this ZIP. Est. rent is a rule-of-thumb (price ÷ 24 ÷ 12), not a market quote. SB 9 / ADU development analysis doesn't apply to condos: the owner doesn't control the underlying land.

Hazard Snapshot

Flood Zone

X
Area of minimal flood hazard.

Fire Severity

None
Not in a mapped state fire severity zone.

Liquefaction

No
Not in a mapped liquefaction zone.

Fault Zone

No
Not in a mapped Alquist-Priolo fault zone.

Not a substitute for a Natural Hazard Disclosure (NHD) report. Zones reflect available GIS data and may not cover all localities.

Nearby Public Schools

Elementary School

Sunnybrae Elementary

San Mateo-Foster City

0.6 miles away
Middle School

Borel Middle

San Mateo-Foster City

0.4 miles away
High School

Aragon High

San Mateo Union High

0.7 miles away

School boundaries are subject to change. Nearest school distance does not guarantee enrollment eligibility. Check with the local district. Data provided by CDE.

Proprietary Intelligence

Market Heat Index

78/100

Based on recent sales velocity and local demand in 94402.

Flippability Score

15/100

Measures neighborhood renovation density vs. recent permits on this property.

Bidding War Prob.

59%

Likelihood of multiple offers based on local list-to-sale ratios and DOM.

Proforma ROI Calculator

Back-of-the-napkin deal analysis across development strategies.

Median of 11 recent condo sales in San Mateo (94402): $750/sqft. Sized within 25% of the 2,100 sqft build, because smaller houses sell for more per foot and pricing a rebuild off them overstates resale.

Commission, transfer tax and closing. Deducted from resale before profit, so the ROI below is net of the exit rather than gross.

Carry on total capital for the project duration. At 0% the model is a cash purchase; 12 months at a typical construction-loan rate moves ROI by 6 to 10 points on a deal this size, so price it with your real rate.

Hard Costs$1,155,000
New Build2,100 sqft
Total Capital Required$2,598,000
Estimated Resale (ARV)$1,575,000
Cost of Sale (5%)-$78,750
Net Proceeds$1,496,250

Projected Profit

-$1,101,750
-42.4% ROI

Warning: Project is mathematically underwater.

Recent Comparables (San Mateo 94402)

Sized to the modelled 2,100 sqft build: sales within 25% of it. Smaller houses sell for more per foot, so pricing a rebuild off them overstates resale.

22 DE Sabla Rd

Sold
$2,150,000
Sold: 2026-08-06
Lot: 7,700
Sqft: 1704
$/Sqft: $1,262

10 Crystal Springs Rd Unit 1310

Sold
$1,535,000
Sold: 2026-07-15
Lot: 1
Sqft: 2341
$/Sqft: $656

555 Fulton Rd Unit 101

Sold
$1,900,000
Sold: 2026-06-17
Lot: -
Sqft: 2094
$/Sqft: $907

28 W 4th Ave Apt 11

Sold
$1,260,000
Sold: 2026-06-12
Lot: 1,613
Sqft: 1700
$/Sqft: $741

50 Mounds Rd Apt 107

Sold
$1,250,000
Sold: 2026-05-07
Lot: -
Sqft: 2076
$/Sqft: $602

111 W 3rd Ave Apt 201

Sold
$1,850,000
Sold: 2026-05-04
Lot: -
Sqft: 2210
$/Sqft: $837

50 Mounds Rd Apt 108

Sold
$1,288,888
Sold: 2026-04-07
Lot: -
Sqft: 2036
$/Sqft: $633

26 W 4th Ave Apt 1

Sold
$1,200,000
Sold: 2026-02-03
Lot: 24,000
Sqft: 1600
$/Sqft: $750

149 W 3rd Ave

Sold
$1,825,000
Sold: 2025-11-21
Lot: -
Sqft: 1829
$/Sqft: $998

50 Mounds Rd Apt 305

Sold
$1,459,000
Sold: 2025-10-15
Lot: -
Sqft: 2076
$/Sqft: $703

111 W 3rd Ave Apt 306

Sold
$1,503,000
Sold: 2025-09-12
Lot: -
Sqft: 1958
$/Sqft: $768