For sale

$1,780,000

143-145 N Humboldt St, San Mateo, CA 94401

6beds

6baths

4,008sqft

$11,271/mo

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Duplex, Residential Income

Built in 1986

-- sqft lot

$1,779,500 Zestimate^®

$444/sqft

$-- HOA

What's special

Exceptional duplex investment opportunity in a desirable San Mateo location! Build in 1986, this well-maintained property features two spacious 3 bedroom, 2.5-baths units, each with an attached one-car garage, private driveway parking, and generous living space. Large rear yard offers excellent potential to add an ADU or explore future expansion possibilities(Buyer to verify with the City of San Mateo). Ideally located just minutes from vibrant Downtown San Mateo, Caltrain, shopping, dining, parks, and major commute routes including Highways 101 and 92. An outstanding opportunity for investors or owner-occupants seeking strong rental income and long-term upside.

20 days

64

7

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 6
Bathrooms: 6

Heating

Cooling

None

Features

Doors: None

Interior area

Total structure area: 4,008
Total interior livable area: 4,008 sqft

Property

Parking

Total spaces: 2
Parking features: Attached
Garage spaces: 2
Has carport: Yes

Accessibility

Accessibility features: None

Features

Stories: 2

Lot

Size: 7,602 Square Feet

Details

Parcel number: 033123170
Zoning: R20000
Special conditions: Standard

Construction

Type & style

Home type: MultiFamily
Property subtype: Duplex, Residential Income

Materials

Foundation: None
Roof: Other

Condition

Year built: 1986

Utilities & green energy

Gas: PublicUtilities
Sewer: Public Sewer
Water: Public
Utilities for property: Public Utilities, Water Public

Community & HOA

Location

Region: San Mateo

Financial & listing details

Price per square foot: $444/sqft
Annual tax amount: $18,903
Date on market: 8/5/2026
Listing agreement: ExclusiveRightToSell
Inclusions: OvenRangeAllUnits
Lease term: Month To Month

Estimated market value

$1,779,500

$1.69M - $1.87M

$6,574/mo

Price history

Date	Event	Price
8/5/2026	Listed for sale	$1,780,000$444/sqft
Source: MLSListings Inc #ML82056708 Report a problem

Public tax history

Tax history is unavailable.

Monthly payment

Est. payment

Payment breakdown

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Principal & interest
$1,547
Mortgage insurance
$0
Property taxes
$170
Home insurance
$105
HOA fees
$0
Utilities
Not included

All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.

HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.

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Climate risks

Neighborhood: North Central

Getting around

81 / 100

Very Walkable

37 / 100

Some Transit

68 / 100

Bikeable

Nearby schools

GreatSchools rating

2/10
San Mateo Park Elementary School
Grades: K-5Distance: 1.2 mi
8/10
Borel Middle School
Grades: 6-8Distance: 2.4 mi
9/10
San Mateo High School
Grades: 9-12Distance: 0.3 mi

Schools provided by the listing agent

District: SanMateoFosterCityElementary

Source: MLSListings Inc. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.