When a house runs out of room, the choice is to move, to convert space you already have, or to build more. A well-built addition is often the best value of the three: you keep your neighborhood and your lot, and you gain exactly the rooms you were missing. Ramos General Building builds home additions across Oakland and the Bay Area, drawing on 10 years of construction work in California.
Types of home additions we build
- Room additions. A new bedroom, family room or office added at ground level, with its own foundation.
- Bump-outs. A few feet added to a kitchen, bathroom or closet, often the most efficient way to fix a tight room.
- Primary suites. A bedroom with its own bathroom and closet, added on the ground floor or above.
- Second-story additions. A full new level on top of the existing house, with a new stair and the structural upgrades it requires.
Tying an addition into an existing house
The hard part of an addition is where new meets old. We plan that connection carefully:
- Foundation. The new foundation is designed for the soil, which in much of the East Bay flatland is clay that moves with moisture. It is tied to the existing structure as the engineer specifies.
- Structure. Floor heights, wall lines and roof framing are matched so floors run level from the old house into the new rooms.
- Seismic connections. New framing is built with the shear walls and hardware the plans call for, important anywhere near the Hayward Fault.
- Exterior match. Siding, trim, windows and rooflines are chosen to match the original house, so the addition reads as part of the home.
Oakland permits for home additions
Additions change the building envelope, so they get more review than an interior remodel:
- Zoning review. Setbacks, height and lot coverage are checked against the zoning for your lot.
- Design review. Many additions in Oakland go through design review, especially when they are visible from the street.
- Building permit. Structural, energy and life-safety plans are reviewed, and Oakland requires an approved construction waste recycling plan before the permit is issued.
- Inspections. Foundation, framing, rough-ins, insulation and final inspections as the work progresses.
We coordinate with your architect or designer so the drawings reflect how the addition will actually be built.
Planning an addition with Ramos General Building
Every project starts with a free estimate, where we look at the house, the lot and what you want to add. From there you receive a written scope and a sequence that shows when each part of the house will be affected. If the addition is mainly about the kitchen or a bath, see kitchen remodeling and bathroom remodeling. If you are weighing a separate unit instead, start with ADU construction, or read about our construction process.