Additions in Marin County
Second stories and room additions that grow your home the right way.
Licensed & Insured
CA General B License CSLB #914115
Serving the Major Bay Area
Marin County, SF County, Alameda County
Permits Handled In-House
Filed, tracked & inspected for you
Free Estimates
No-obligation consultations
About our additions work
When you love your neighborhood but need more space, an addition is often the best move. We design and build room additions and second stories that tie into your existing home structurally and visually, so it looks like it was always there.
Room additions and second stories designed to match your existing home structurally and aesthetically. We manage permitting, foundation, framing, and finish work so your addition feels original to the house.
What's included
- Single-room additions: bedrooms, family rooms, primary suites, home offices
- Second-story additions
- Bump-outs to enlarge kitchens and bathrooms
- Foundation, framing, roofing, and finish work
- Matching siding, rooflines, windows, and trim to your existing home
- Permits, engineering coordination, and inspections
How it works
- Site visit to review your lot, setbacks, and goals
- Feasibility and written estimate
- Design and engineering coordination
- Permitting with your local building department
- Construction with a single point of accountability
- Final inspection and walk-through
Why homeowners choose Cutler Construction
- Licensed California General B contractor, CSLB #914115, in business since 2008.
- Fully insured, with permits and inspections handled for you.
- Free, no-obligation consultations and written estimates.
Where we offer additions
Based in San Anselmo, we provide additions throughout Marin County, and for home and property owners in San Francisco and Alameda Counties.
- San Anselmo
- Fairfax
- Ross
- Kentfield
- San Rafael
- Novato
- Mill Valley
- Larkspur
- Corte Madera
- Tiburon
- Sausalito
- Greenbrae
- San Francisco
- Alameda County
Common questions
Is an addition or an ADU better for me?
An addition expands your main home; an ADU creates a separate living unit you can rent out or use for family. We can walk through both options on your property.
Do you work with architects and engineers?
Yes. We regularly coordinate with architects and structural engineers, or can bring a design team to the project through our design-build service.
Will an addition match my existing house?
That's the goal. We match materials, rooflines, and details so the addition feels original to the home.
Planning additions?
Reach out for a free, no-obligation estimate.