Field notes / Homeowner guide
Preparing for a foundation construction or replacement project
Foundation work happens at the edge of the house and under it. Preparing the site, the utilities and the household before work starts prevents most of the disruption owners remember afterwards.
Written · KB Remodeling
The short answer
Before work starts, agree in writing on access routes, where materials and spoil go, which utilities are protected or interrupted, whether parts of the house are unusable, how neighbors are informed, and how the work is documented before it is covered.
Who this applies to
Owners with a permitted foundation construction, partial or full replacement project, or a new foundation for an addition or ADU. It does not describe construction methods.
01 · When it applies
What changes when foundation work starts
Excavation opens the ground beside or under the house, equipment and concrete deliveries need a route, and the house may be supported temporarily. Doors may stick or cracks appear in finishes as loads move; the contract should say how that is handled.
Much of this is predictable. The work is to decide it before it happens.
Ask yourself
- Which rooms or entrances will be affected, and for how long in stages?
02 · What to ask for
Site and access
Walk the route from the street to the work area with the contractor. Identify gates, side yards, trees, fences, irrigation and anything fragile. Agree where materials are staged and where excavated soil sits until it is removed.
| Area | Decide before work | Who |
|---|---|---|
| Route and staging | Path for equipment, deliveries and spoil; protection | Contractor with owner |
| Utilities | Location marking, protection, planned interruptions | Contractor; utility providers where required |
| Inside the house | Rooms cleared, valuables moved, dust separation | Owner, with contractor guidance |
| Occupancy | Whether to stay, and arrangements if not | Owner |
| Neighbors | Notice of noise, access and shared walls or fences | Owner and contractor |
| Documentation | Pre-construction photos, inspection records, covered-work photos | Contractor, copies to owner |
| Pets and children | Safe areas away from open excavation | Owner |
Ask yourself
- What needs to be protected, moved or removed along the route?
03 · The decision
Staying in the house or not
Many owners stay through repair work; full replacement and work that interrupts water, gas or sewer can make living there impractical for stages. Ask which stages affect habitability rather than assuming either way.
Ask yourself
- Which stages, if any, interrupt essential services?
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04 · What to ask for
Inspections and records
Concrete is placed only after the required inspection. Ask for photos of reinforcement, anchors and drainage before they are covered, and keep the permit card and sign-offs. These records matter for future sales, insurance questions and later work.
Ask yourself
- Who photographs work before it is covered?
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05 · Next step
After the concrete
Restoration — framing reconnection, floors, stucco, landscaping — follows inspections and curing. Confirm in writing what is restored and to what level before work begins, so the end of the project is as defined as the start.
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A scenario to consider
Before a partial replacement along a side yard, the owner and contractor mark the gas line, move a section of fence, agree that spoil will sit on the driveway for a defined stage, and notify the neighbor whose wall runs along the work.
Planning scenario
Bring this to your conversation
- Walk the access route and note what to protect
- Agree staging and spoil locations
- Mark utilities and planned interruptions
- Clear affected rooms and protect valuables
- Decide on occupancy by stage
- Notify neighbors
- Agree photo documentation before covering
One more question
Will the house crack during foundation replacement?
Some finish cracking can occur as loads move. A good contract says how finish damage from the work is assessed and restored.
Official references
Prepare plans and ADUs · Web resource · English source
LADBS — InspectionsUse this for: Understand City of Los Angeles inspection stages before work is covered.
Prepare plans and ADUs · Web resource · English source
LADBS — Plan review and permittingUse this for: For City of Los Angeles parcels, find LADBS plan review, online permits and appointments.
Check professionals · Web resource · English source
California Contractors State License Board — Hire a contractorUse this for: Prepare contractor-selection questions and request project-specific documentation.
For requirements specific to your property, consult the local reviewing authority.
About this guide
Published by KB Remodeling from the official sources cited. It is not attributed to an individual author and does not claim review by an architect, engineer or attorney. We receive remodel, ADU, new-home and rebuild inquiries; scope, licensing and location are reviewed before any next step.