1437 Mason ST San Francisco, CA 94133 Open Tue 9AM-11AM

UPDATED: 03/13/2026 03:11 AM ON SITE: New on site today

$1,388,000

2 Baths1,330 SqFt

Key Details

Property Type Single Family Home

Sub Type Single Family Residence

Listing Status Active

Purchase Type For Sale

Square Footage 1,330 sqft

Price per Sqft $1,043

MLS Listing ID 426111490

Full Baths 2

HOA Y/N No

Year Built 1907

Lot Size 2,750 Sqft

Acres 0.0631

Property Sub-Type Single Family Residence

Property Description

Located in the heart of Russian Hill, one of San Francisco's most desirable and supply-constrained residential neighborhoods, 1437 Mason Street presents a rare opportunity to acquire a fully permitted renovation project with significant upside. The property consists of a two-unit residential building originally constructed in 1907, situated on a 2,750 square foot lot in the RM-2 zoning district. The project has already secured approvals and permits through the San Francisco Department of Building Inspection, allowing a buyer to immediately move forward with construction and reposition the asset into a modern, high-end residential property. The approved plans call for a comprehensive redevelopment of the existing structure while maintaining the building envelope. The project includes: Complete interior reconfiguration of both residential units, New structural foundation and seismic improvements, Conversion of basement space into functional living area, Removal and replacement of existing stair systems, Full facade upgrades and exterior improvements, New roof deck elements and modernized architectural features. Upon completion, the project will deliver two redesigned residential units with modern layouts, updated systems, and enhanced outdoor space. Permits in hand for the follow unit mix: One (3) bed (3) bath - UPSTAIRS One (1) bed (1.5) bath - DOWNSTAIRS. Also potential to add 3 units to the front part of the property. Contractor's special