---
listing_id: ML82043896
status: Active
price: 1880000
beds: 0
baths_full: 0
baths_half: 0
sqft_living: 4165
sqft_lot: 5750
lot_acres: 
year_built: 1990
property_type: Residential Income
property_subtype: Duplex
address: "117 N Delaware St"
city: San Mateo
state: CA
zip: 94401
county: "San Mateo County"
lat: 37.571222
lng: -122.324938
days_on_market: 1
hoa_fee: 
hoa_frequency: 
garage_spaces: 4
list_agent: "Tim Gilmartin"
list_office: "Gilmartin Group"
list_agent_phone: "(650) 348-2020"
list_agent_license: 00841354
mls_source: MLSL
modified: 2026-04-22
transaction_type: buy
---

Home | San Mateo County | San Mateo | 94401 | 117 N Delaware St

117 N Delaware St, San Mateo, CA 94401

MLS: ML82043896 | Status: Active | Price: $1,880,000
Beds/Baths: – / –
Property Type: Residential Income

Quick Facts

Beds Baths Sq Ft Sq Ft Lot Yr Built
4,165 5,750 1990

Remarks

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 2.5 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!

MLS Listing Information

Field Value
MLS # ML82043896
MLS Source MLSListings, Inc.
Days on Site 1

Features

Interior Features

Feature Details
Flooring Carpet, Tile, Vinyl/Linoleum
Cooling None
Heating Central Forced Air

Exterior Features

Feature Details
Roof Shingle
Foundation Concrete Perimeter

Parking, School, and Other Information

Feature Details
Garage/Parking Attached Garage, Carport, On Street, Garage: 4 Car(s)
Elementary District San Mateo-Foster City Elementary
High School District San Mateo Union High
Sewer Public Sewer
Water Public
Zoning RM0004

Contact Information

Listing Agent Co-Listing Agent
Tim Gilmartin Kathryn Gerhardt
Gilmartin Group Gilmartin Group
License #: 00841354 License #: 01958832
Phone: (650) 348-2020 Phone: (650) 773-3595

Property Units

# Buildings # Leased Units # Total Units
1 2 2

Unit Details

Unit # Sq Ft Beds Baths Rent
1 3 2/1 $3,760
2 3 2/1 $3,850

School Ratings

School data provided by GreatSchools.org

Nearby Schools

School Type Grades Distance Rating
San Mateo High School public 9-12 0.45 mi 9
San Mateo Adult public UG 0.50 mi N/A
North Shoreview Montessori Elementary School public K-8 0.52 mi 10
Sunnybrae Elementary School public K-5 0.93 mi 2
South Hillsborough School public K-5 0.94 mi 9
San Mateo Park Elementary School public K-5 0.98 mi 2
Washington Elementary School public K-5 1.07 mi 7
LEAD Elementary public K-5 1.31 mi 2
Baywood Elementary School public K-5 1.39 mi 7
Burlingame High School public 9-12 1.42 mi 10
Borel Middle School public 6-8 1.48 mi 8
Aragon High School public 9-12 1.50 mi 10
Bayside Academy public K-8 1.67 mi 6
Parkside Montessori public PK,KG,1,2,3,4,5,6,7,8 1.69 mi 9
McKinley Elementary School public K-5 1.83 mi 8
College Park Elementary School public K-5 1.93 mi 9
North Hillsborough School public K-5 2.11 mi 9
Crocker Middle School public 6-8 2.14 mi 8
Fiesta Gardens International Elementary School public K-5 2.15 mi 4
Meadow Heights Elementary School public K-5 2.27 mi 7

Nearby Homes

Address Price Beds Baths Sq Ft Status
869 Woodside Way $1,599,000 2,317 Active
119 E Poplar Ave $1,698,000 2,490 PendingDoNotShow
728 Laurel Ave $1,995,000 2,096 PendingDoNotShow
1028 S Idaho St $1,599,000 2,097 Contingent

Disclosures

©2026 MLSListings Inc. All rights reserved. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Information provided is for personal, non-commercial use by the viewer and may not be redistributed without explicit authorization from MLSListings Inc.

Presently MLSListings.com displays Active, Contingent, Pending, and Recently Sold listings. Recently Sold listings are properties which were sold within the last three years. After that period listings are no longer displayed in MLSListings.com. Pending listings are properties under contract and no longer available for sale. Contingent listings are properties where there is an accepted offer, and seller may be seeking back-up offers. Active listings are available for sale.

This listing information is up-to-date as of April 22, 2026. For the most current information, please contact Tim Gilmartin, (650) 348-2020.