Looking for home additions in Redwood City? ODL Construction is a licensed Bay Area general contractor serving Redwood City and the surrounding Peninsula — from Emerald Hills, Mount Carmel, Friendly Acres 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 Redwood City specifically, it comes down to local realities: Redwood City is more ADU- and growth-friendly than its pricier Peninsula neighbors, which makes additions and second units especially attractive on its varied lots. Redwood City is among the more accommodating Peninsula jurisdictions for ADUs and additions; permitting moves reasonably with a complete submittal. We design and permit your home additions around exactly those conditions.
Home Additions in Redwood City — 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.
Redwood City permits
Redwood City is among the more accommodating Peninsula jurisdictions for ADUs and additions; permitting moves reasonably with a complete submittal.


