ADU cost · 1000 Sq Ft
1000 sq ft ADU
cost in LA.
A 1000 sq ft ADU is a popular size for a roomy 2–3 bedroom unit with real living space. Here's what 1000 square feet typically costs in Los Angeles by ADU type (all-in: construction + soft costs + contingency).
Open the full cost calculator →Estimated all-in cost
1000 sq ft by ADU type.
Ranges below are all-in (construction + soft costs + contingency) for 1000 square feet in Los Angeles. Your exact number depends on finishes and lot conditions — model it precisely with the calculator.
Garage conversion
fastest, most affordable
$250K
$400K
Internal ADU
within the existing home
$260K
$420K
Attached ADU
added to the house
$300K
$500K
Detached ADU
standalone, best resale
$330K
$560K
Estimates for planning only — not a quote. Book a consultation for a firm number on your lot.
Model it in 60 seconds
Get your exact range.
Our free interactive calculator models hard cost, soft cost, and contingency across every ADU type, size, and finish level — a real range, not a press-release number.
Open the ADU cost calculator →Questions
ADU cost in 1000 Sq Ft — your questions.
Still have a question? Ask us during your free consultation.
How much does a 1000 sq ft ADU cost in Los Angeles?
A 1000 sq ft ADU in LA typically runs about $250K–$560K all-in depending on type and finishes. A garage conversion at this size is on the lower end; a detached new-build with upgraded finishes is on the higher end. Use the calculator below for a range tuned to your lot.
What's the cheapest way to build a 1000 sq ft ADU?
Converting an existing garage (if you have one near that size) is usually the most affordable path, since you reuse the structure and foundation. A detached new-build costs more but adds the most privacy and resale value.
Why is there a range instead of one number?
Because cost depends on finish level, site conditions, and ADU type. Two identical-sized ADUs can differ 2× based on lot access, utility runs, and finishes. Anyone quoting a single guaranteed number before seeing your lot is guessing.
Does this include permits and design?
The high end includes soft costs (architecture, engineering, permits, utility taps) plus an ~8% contingency. Hard construction cost alone is roughly 20% lower.
Free consultation
Get a firm number for your lot.
Calculators get you close. For a real all-in price, tell us about your property and we'll put together a precise estimate — no obligation.
