Ownership Guide · San Francisco

Renovating a Tenancy-in-Common (TIC) Unit in San Francisco

By Solid Bay Construction SF | Updated 2026

San Francisco has one of the largest concentrations of tenancy-in-common (TIC) ownership in the country — a structure where multiple owners hold undivided interest in one property, each with exclusive rights to a specific unit. It's a great way into SF homeownership, but it adds real steps to a renovation that condo or single-family owners don't have to deal with.

What Makes TIC Renovation Different

• Shared ownership agreement — most TICs operate under a formal agreement that specifies what renovations require co-owner approval, especially anything affecting shared systems or the building exterior
• TIC lender approval — if your unit is financed through a fractional TIC loan, the lender may need to approve significant renovations, particularly ones affecting the building's overall value or condition
• Shared systems — plumbing stacks, the main electrical service, and structural elements are often shared across units, meaning work on "your" unit may require notifying or coordinating with co-owners
• Permit filing — DBI permits are filed against the whole property (parcel), not an individual TIC unit, so other owners typically need to be aware of and not object to the permit application

Before You Start

Review your TIC agreement first — most specify a notice period or approval threshold (for example, renovations over a certain dollar amount, or anything touching shared walls, require a vote). Getting this in writing from your co-owners before signing a construction contract avoids a mid-project dispute that can halt work entirely.

What Requires Full Co-Owner Sign-Off

• Anything altering the building exterior or common areas
• Work affecting shared structural elements, plumbing stacks, or the main electrical panel
• Any change to unit square footage or configuration that affects the TIC's occupancy agreement or fractional interest percentages

Interior, non-structural work fully within your exclusive-use space (a kitchen or bathroom remodel that doesn't touch shared systems) usually needs less formal approval — but "usually" depends entirely on your specific agreement, so it's worth confirming rather than assuming.

Working With a Contractor Who Understands TIC Structure

A contractor unfamiliar with TIC ownership may not know to flag these coordination steps until they cause a delay. Experience with SF's TIC-heavy housing stock means building the co-owner notification and approval timeline into the project schedule from the start, rather than discovering it mid-permit.