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$1,425,000
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Property Description
*Call for offers Thursday 10/16 at 11:00am.*Rare single story triplex consisting of a stand alone cottage and a duplex building on a large 7,631 SqFt lot in one of the Bay Area's most coveted submarkets. Located in close proximity to Downtown Burlingame, Downtown San Mateo, SFO and other landmarks. An ADU consultancy's pre-feasibility study indicates that up to four Accessory Dwelling Units can be added which would drive substantial income and appreciation. Up to 75% LTV conventional financing. Opportunity for future owner-occupancy and a low cost alternative to a single family home. Two one-bedroom/one-bathroom units and one two-bedroom/one-bathroom unit. All three units are large and have private yards and are occupied, providing steady rental income. Tremendous rental income upside upon unit turnover and renovation. There is a three vehicle car-port in the back of the property. Monthly rent: $7,300 (current), $10,000 (proforma). The strong rent growth, shortage of housing units, proximity to large Silicon Valley employers, and ADU potential make 321 Grand Boulevard an exceptional investment for both the cash flow and appreciation-minded investor. The adjacent triplex at 327 Grand Blvd and the fourplex at 315 Grand Blvd are also available for sale.
Full Property Details
Full Property Details for 321 Grand Blvd
General
- Sold For: $1,425,000
- Status: Closed
- Type: Triplex
- Source: RE_Infolink
- MLS ID: ML82022562
- Added to Site: 115 day(s) ago
Interior
- Flooring: Carpet, Hardwood, Tile, Vinyl / Linoleum
Additional Information
- Extras: Not Applicable
- Security/Safety: None
Parking
- Garage Spaces: 8
- Parking Features: Attached Garage, Off-Street Parking, Uncovered Parking
Location
- Area: Eastern Addition/Downtown Area
- County: San Mateo
- Cross Streets: San Mateo Drive
Heating & Cooling
- Cooling Type: Ceiling Fan
- Heating Type: Forced Air, Gas, Wall Furnace
Utilities
- Sewer: Public Sewer, Sewer Available, Sewer Available at Site, Sewer in Street
- Water: Public
- Utility Description: Individual Electric Meters, Individual Gas Meters, Public Utilities
- Metering: Master Water, Separate Electric, Separate Gas
Structural Information
- Architectural Style: Victorian
- Construction: Wood Frame
- Foundation: Brick , Combination, Concrete Perimeter
- Roof: Composition, Shingle
- Disability Access: None
- Square Feet: 1,852
- Year Built: 1902
Unit Information
Unit 1
- Bedrooms: 2
Unit 2
- Bedrooms: 1
Unit 3
- Bedrooms: 1
Lot Features
- Property View: None
- Lot Size (Acres): 0.1752
- Minimum Lot Size: 7631
- Lot Size (Sq. Ft.): 7,631
- Building Sites: 2
- Zoning: RM0000
Listed by Compass, Ismael Benhamida and Compass, Hanna John Azar
Sold by Apr, Hanna John Azar and Compass, Ismael Benhamida
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Schools
Schools serving 321 Grand Blvd
School Districts:San Mateo Union High School District, San Mateo-Foster City Elementary School District
| Name | Grades | Distance |
|---|---|---|
San Mateo Park Elementary School 161 Clark Drive, San Mateo, CA 94402 | K-5 | 0.6 mi |
Borel Middle School 425 Barneson Avenue, San Mateo, CA 94402 | 6-8 | 1.9 mi |
San Mateo High School 506 North Delaware Street, San Mateo, CA 94401 | 9-12 | 0.3 mi |
Disclaimer:
School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 321 Grand Blvd
Date
Details
Price
Change
Source
12/02/2025
Sold
$1,425,000
-1.72%
MLS
9/23/2025
Listed
$1,450,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
321 Grand Blvd, San Mateo, CA 94401 (MLS# ML82022562) is a Triplex property that was sold at $1,425,000 on December 02, 2025. Want to learn more about 321 Grand Blvd? Do you have questions about finding other Triplex real estate for sale in San Mateo? You can browse all San Mateo real estate or contact a Coldwell Banker agent to request more information.

