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Remodeling basics

How a home remodel works, start to finish

Every remodel, from a bathroom to a whole house, moves through the same ten stages. Knowing them ahead of time tells you when the big decisions happen, where the waiting is, and what to ask before anyone picks up a hammer.

9 min readUpdated October 2026Los Angeles County

Most of the stress in a remodel comes from surprises: a permit that takes longer than expected, a cabinet order that arrives in week nine, or rot behind a wall nobody priced. None of that is unusual. It just helps to know where it tends to happen.

1. Goals and a working budget

Start with what has to change and why. "The kitchen doesn't work for us" leads to a different project than "we want to sell in two years." Write down the must-haves, the nice-to-haves and a number you're comfortable spending.

A rough budget early on saves weeks of design work on a project you can't afford. Our cost planner gives a price range for your area in a couple of minutes, including permits, design and a contingency.

Plan on a contingency

Set aside 10 to 15 percent beyond the estimate for things nobody can see until the walls are open. Older homes, especially those built before 1978, should lean toward the higher end.

2. Site visit and scope

A contractor walks the house, measures, and looks at what the project touches: the electrical panel, the plumbing, the framing, access for materials. The result is a written scope that says exactly what is and isn't included. Every later price is built on that document, so read it carefully.

3. Design and drawings

Simple swaps, like new flooring or replacing a vanity in the same spot, rarely need drawings. Anything that moves walls, plumbing or gas, changes the footprint, or adds a room does. Drawings usually come from a designer or architect, plus a structural engineer when walls or beams change.

This is also when you pick finishes. Choosing cabinets, tile, fixtures and appliances before construction starts is the single best way to protect the schedule.

4. Permits

In the City of Los Angeles, permits come from the Department of Building and Safety (LADBS). Unincorporated areas use LA County Building and Safety, and cities like Pasadena, Glendale, Long Beach and Santa Monica run their own departments. Simple work, like a water heater or a re-roof, can often get an express or over-the-counter permit. Additions, ADUs and structural changes go through plan check, which can take several weeks or more.

Read our permit guide for what needs one and how long each path usually takes.

5. Ordering materials

Lead times shape the schedule more than most people expect. Stock items can arrive in days, while custom cabinets, special-order windows and some appliances can take several weeks to a few months. A good contractor orders long-lead items as soon as selections are final, often while permits are still in review.

6. Demolition and discovery

Demolition is fast and loud. It's also when hidden conditions show up: water damage, termite damage, old wiring, or framing that doesn't match the drawings. Any changes should be priced in writing as a change order before the extra work goes ahead.

Homes built before 1978

Federal rules require lead-safe work practices when disturbing paint in pre-1978 homes, and older flooring, ceilings and duct wrap may contain asbestos. Testing before demolition protects your family and keeps the job from stopping halfway.

7. Rough-in and inspections

With the space open, the trades install what goes inside the walls: framing, plumbing supply and drain lines, electrical wiring and boxes, gas lines, and ducts. The building inspector checks this work before it gets covered. Plan for a few days between finishing rough-in and getting the inspection.

8. Insulation and drywall

Once the rough inspection passes, insulation goes in and the walls are closed. Many jurisdictions inspect insulation, and some also inspect drywall nailing, before taping and texture. After this stage the room starts to look like a room again.

9. Finishes

Cabinets, counters, tile, flooring, paint, trim, fixtures, lighting and appliances go in, roughly in that order. Countertops are usually measured after the cabinets are set, which adds a short wait. This is the most visible stage and often the one with the most small decisions.

10. Final inspection and walkthrough

The inspector signs off the permit. Then you walk the job with the contractor and make a punch list of anything that needs fixing or finishing. Before the final payment, ask for:

  • The signed-off permit card or final inspection record
  • Unconditional lien releases from the contractor and major suppliers
  • Warranty information and product manuals
  • Paint colors, tile names and fixture models, for future repairs

How long does it take?

Construction time depends on the job, and permits and material lead times come on top. These are typical ranges for Los Angeles County:

ProjectDesign and permitsConstruction
Bathroom remodel0 to 6 weeks3 to 8 weeks
Kitchen remodel2 to 10 weeks6 to 12 weeks
Garage conversion2 to 4 months2 to 4 months
Room addition3 to 6 months3 to 6 months
Detached ADU3 to 8 months4 to 8 months

The cost planner builds a start-to-finish timeline for the jobs you pick, so you can see how they overlap.

See what your project would cost

Pick the job, enter the size and a few details, and get a price range for your area with a timeline.

Open the cost planner

Common questions

Can I live in the house during a remodel?

Usually, yes. For a kitchen remodel, plan a temporary kitchen with a microwave, a fridge and a hot plate. With only one bathroom, ask the contractor how they'll keep a toilet working each night. Whole-house remodels and major structural work often mean moving out for part of the job.

When should I pay, and how much?

In California, the down payment on a home improvement contract is capped by law, and later payments should follow completed work rather than run ahead of it. See how to hire a contractor for the details.

What usually causes delays?

The most common causes are late material selections, long plan check times, hidden damage found during demolition, and failed inspections. Picking finishes early and testing older homes before demolition avoids most of them.