The full timeline, phase by phase
Here is where the months actually go on a custom home. Remodels compress the early phases but rarely eliminate them.
- Programming and schematic design — 2 to 4 months
- Design development and construction documents — 3 to 6 months
- Plan check and permitting — 3 to 9 months, and longer in hillside or coastal jurisdictions
- Bidding and pre-construction — 1 to 2 months
- Construction — 12 to 18 months for a custom home
- Punch list, final inspections, and certificate of occupancy — 1 to 2 months
Permitting is the least predictable phase
Permitting is the single hardest phase to forecast, and it is almost entirely outside your contractor's control. A straightforward project in a cooperative jurisdiction can clear plan check in about three months. A hillside project requiring grading review, or a coastal project requiring a Coastal Development Permit, can take a year or more.
Several overlays add review time in Los Angeles: the Hillside Ordinance, Very High Fire Hazard Severity Zones, the Coastal Zone, Historic Preservation Overlay Zones, and Specific Plan areas each bring their own requirements. If your parcel sits in more than one, reviews tend to run sequentially rather than in parallel.
The most reliable way to shorten permitting is to submit a complete, correct package the first time. Each correction cycle typically costs four to eight weeks, and most delays come from resubmittals rather than from the initial review.
Typical construction durations
Once permits are in hand and the drawings are complete, construction duration is reasonably predictable.
- Kitchen remodel — 8 to 14 weeks
- Bathroom remodel — 5 to 9 weeks
- Single-room addition — 4 to 7 months
- Whole-home gut renovation — 9 to 16 months
- Ground-up custom home — 12 to 18 months
- ADU or garage conversion — 5 to 10 months
What actually causes delays
In practice, three things account for most schedule slippage: late decisions, long-lead materials, and discovered conditions.
Late decisions are the most controllable and the most common. A tile selection made during framing is free; the same selection made when the tile setter is scheduled costs a week of idle time. Selections should be locked before construction starts, not resolved as trades arrive.
Long-lead items need ordering months ahead. Steel windows, custom cabinetry, imported stone, specialty appliances, and certain plumbing fixtures can carry lead times of 12 to 30 weeks. A single unordered window package can hold up framing inspection, drywall, and everything after it.
Discovered conditions apply mainly to renovations, and are the reason renovation schedules need float built in rather than added later.
Frequently asked questions
How long does it take to build a custom home in Los Angeles?
Expect 24 to 36 months from first design meeting to move-in. Construction itself accounts for 12 to 18 months; the remainder goes to design, engineering, plan check, and permitting. Hillside and coastal parcels often extend the total beyond three years because of additional review requirements.
How long do building permits take in Los Angeles?
Plan check and permitting typically take 3 to 9 months. Straightforward projects in cooperative jurisdictions can clear in about three months, while hillside grading review or a Coastal Development Permit can take a year or more. Each correction cycle usually adds four to eight weeks, so a complete first submittal is the best way to save time.
How long does a kitchen remodel take?
A permitted kitchen remodel usually takes 8 to 14 weeks of construction, plus design and permitting beforehand. Timelines extend when plumbing or gas lines move, when a bearing wall is removed, or when custom cabinetry with a long lead time is specified.
Can I speed up my construction timeline?
Yes, mainly by finishing decisions early and ordering long-lead materials before construction begins. Submitting a complete permit package the first time avoids correction cycles that each cost four to eight weeks. A design-build team can also overlap pre-construction pricing with design rather than running them sequentially.
Do I need to move out during a renovation?
For a whole-home gut renovation, yes — utilities are interrupted and dust control is impractical. For a single kitchen or bathroom, many households stay in place with a temporary kitchen setup. Staying can slow the schedule slightly, since crews work around occupancy and clean up daily.
