Looking for home additions in Palo Alto? ODL Construction is a licensed Bay Area general contractor serving Palo Alto and the surrounding Silicon Valley — from Professorville, Crescent Park, Old Palo Alto 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 Palo Alto specifically, it comes down to local realities: Palo Alto's planning department is famously rigorous — Eichler single-story overlays, individual-review neighborhoods, and historic resources mean the design package matters as much as the build quality. Palo Alto runs one of the most thorough planning processes in the region — design review, historic resource considerations, and Eichler overlays add time. We design to those rules up front so the project clears review without redesigns. We design and permit your home additions around exactly those conditions.
Home Additions in Palo Alto — 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.
Palo Alto permits
Palo Alto runs one of the most thorough planning processes in the region — design review, historic resource considerations, and Eichler overlays add time. We design to those rules up front so the project clears review without redesigns.


