117 North Delaware Street

Off Market

117 North Delaware Street

San Mateo CA 94401

4165 sq. ft.

5750 sq. ft.

Duplex

Last sold for $1,825,000

Tim Gilmartin, last sold this property on 26 June 2026 after 65 days on market.

Overview

A high-quality Peninsula duplex with stable income, minimal expense drag, and clearly defined long-term upside.117 N. Delaware Street presents a rare opportunity to acquire a well-located duplex in the heart of San Mateo. The property consists of two large units, each configured as 3 bedrooms and 2 bathrooms with garage parking offering strong fundamentals for both owner-occupiers and long-term investors. With tenants in place for over 20 years, the asset provides stable in-place income and a clear path for predictable rent growth under California rent control guidelines. The property currently generates $7,610 per month ($91,320 annually), with a highly efficient expense. Market rents for comparable units are estimated at approximately $4,500+ per month, indicating meaningful long-term upside. At market levels, the property would generate approximately $108,000. Generous layouts, strong rental demand and a desirable unit mix support long-term growth and income optimization. Don't miss this rare opportunity whether as an investment or a property you could occupy!

Features

4165 sq. ft. floor area

5750 sq. ft. lot size

Duplex

Estimated Value

Based on this property and similar duplexes sold in San Mateo over the last 12 months, the estimated median property value of 117 North Delaware Street is $1.56m.

Median value

$1.56m

Estimated value range

$1.05m - $2.35m

Median days on market

Estimated value trend

-31%

decrease over the last 12 months

Average days on market is based on recent, comparable sales in San Mateo. It is only an indication of the time a property is actively listed and should not be relied upon as an accurate representation of how soon a property will be sold.

Property history for 117 North Delaware Street

2026

Sold

$1,825,000

26 Jun 2026 by Tim Gilmartin, of Gilmartin Group

Happy sellers in San Mateo

We have insufficient information to provide an overview of customer satisfaction for San Mateo. Viewing the agent profiles, reviews and sales for San Mateo can provide insights for this location.

Local market activity for duplexes in San Mateo

In the last 12 months, 13 duplexes similar to 117 North Delaware Street, have been sold.

This represents a 75% decrease in duplexes sales when compared to the previous 12 months.

Sold

For Sale

Interested in selling?

People are reaching out to these agents in San Mateo for a market analysis.

Charles Yoon

at REMAX Gold | San Jose

(3 reviews)

Get a market analysis

Susan Berry

at KW Peninsula Estates

(62 reviews)

Get a market analysis

Stella Coral Chen

at Pinnacle Realty Advisors

(8 reviews)

Get a market analysis

Gillian Kilroy

at Compass

Get a market analysis

Nearby agents

Compare and contact these top performing agents who’ve delivered exception customer service for their clients in San Mateo

Charles Yoon

Charles Yoon is a recommended agent for San Mateo. They have 1 local sale and collected 1 local review across the last 12 months.

5 (3 reviews)
1 Review in San Mateo
1 Sale in San Mateo

View profile

Susan Berry

Sellers who recommend Susan Berry have praised them for being local expert, clear communication, responsive, friendly, reliable, supportive, and great negotiation