San Anselmo & Fairfax
Small-town Marin charm with a lot of hidden technical character.
Overview
San Anselmo and Fairfax are central Marin's most walkable, village-like towns. San Anselmo's downtown draws families and professionals who want a small-town feel with a direct commute; Fairfax leans artsy and outdoorsy, with redwood pockets and a strong local culture. Both towns have older housing stock that rewards a careful technical read.
Inspector's Notes
Creek zones and drainage
Both towns sit in creek and ravine terrain. Homes near San Anselmo Creek or the Fairfax watershed can experience seasonal water intrusion, sub-area moisture, and erosion-related foundation movement. Drainage history matters.
Older electrical and plumbing
Much of the housing stock predates modern panels and supply lines. Knob-and-tube remnants, galvanized water supply, and undersized electrical panels are common — especially in homes that have not been fully updated.
Hillside foundations and retaining walls
Fairfax and the Sleepy Hollow area of San Anselmo include homes on steep lots with stepped foundations, retaining walls, and limited access. Engineering documentation and wall drainage are high-value review points.
Buyer Watch-Outs
- Additions or ADUs built without permits in older cottage stock
- Creek-adjacent homes with prior flooding or drainage disputes
- Original sewer laterals and aging water heaters in pre-1950s homes
Seller Angles
- A pre-listing permit and systems review removes the biggest objections in this older stock
- Documenting drainage improvements and retaining wall condition supports asking price
- Buyers here love character — but they price in deferred maintenance. Get ahead of it.
Thinking about buying or selling in San Anselmo & Fairfax?
Start with a structural read, not a sales pitch.