Looking for home additions in Los Altos? ODL Construction is a licensed Bay Area general contractor serving Los Altos and the surrounding Silicon Valley — from Old Los Altos, North Los Altos, South Los Altos and beyond. Room additions, primary suites, and second stories that look original to the home.
In a market where moving up costs hundreds of thousands in transaction costs and a bigger mortgage, adding on is often the smarter play — especially in top-school neighborhoods where the right addition returns more than a relocation. The key is an addition that looks like it was always there, not bolted on.
For Los Altos specifically, it comes down to local realities: Los Altos's large lots and high resale ceiling make whole-home remodels and rebuilds common — the budget supports doing it right, and design review expects exactly that. Los Altos applies design review and floor-area and setback standards on larger projects; the city expects polished, complete submittals. We design and permit your home additions around exactly those conditions.
Home Additions in Los Altos — what we handle
- Room and bedroom additions
- Primary-suite additions
- Second-story additions
- Bump-outs and rear extensions
- Structural engineering and foundation work
- Roofline and exterior matching
- Zoning, setback, and design-review compliance
- Permits and inspections
Home Additions cost
Typical Bay Area ranges, not a quote. Additions price by square footage, structural complexity, and foundation work. Second stories cost more because the floor below must be reinforced. You get a fixed proposal after design.
Timeline
Room additions typically run 3–5 months; second stories 5–9 months, including design, engineering, and permitting.
Los Altos permits
Los Altos applies design review and floor-area and setback standards on larger projects; the city expects polished, complete submittals.


