Room Additions in Lomita, Step by Step
Room additions in Lomita built in a fixed sequence: permit, footings, framing, roof, then systems. Aspenwell Construction explains each step.
Opening the old exterior wall is the point of no return on a Lomita addition, so everything before that day exists to make it short. The permit is approved, the footing is poured and cured, the new floor and walls are framed and the roof is ready to go on. Only then does the wall between old and new come out, and the house stays open to the weather for as little time as the plan allows.
What comes before the demolition
The ground work leads. Utilities are located and marked, the trench is dug to the depth the engineer drew, and steel goes in before concrete. Inspectors view the open trench with its steel placed before any concrete arrives, which means the schedule waits on their visit. Once the concrete cures, the floor system and exterior walls go up beside the old house, still separate from it. Power and water to the existing rooms can stay on during this phase. Building this much of the shell first is what lets the final connection happen quickly.
Closing the house back up
When the old wall opens, the new roof and walls are waiting. Framers tie the two structures together at the plans' connection points, sheathing and roofing close the seam, and water barriers go on over the joint. Rough plumbing, wiring and ducts follow, and inspections come before insulation and drywall. Finish work comes last, once the framing is dry and the inspector has signed off. Lomita's building department handles every inspection stop, so each is booked in the order the work reaches it.
Room Additions in Lomita: questions
It might, and the engineer decides. A second story adds load the original footings were not designed for, so the existing foundation is checked against it. Where it proves weak, the plans add concrete, posts or braced walls, and that work is done before framing starts on the upper floor.
Once the footing and new floor are in, the old wall comes open only where the connection needs it. Plates and joists are fastened across the joint with the nails and straps on the plans, then the roofs are joined and flashed. Insulation, wiring and drywall follow inspection of that joint.
Often it is, because the structure is already exposed. Fastening the sill to the concrete and bracing the cripple walls under the old floor can go in the addition's paperwork, and the work lands in the same sequence, so the old floor is opened only once.
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