Three paths to a new ADU.
One process. One guarantee.

Pros

• Fastest permit path — pre-engineered plans clear plan check in weeks, not months
• Fixed price in writing — no change orders for scope we should have anticipated
• Timeline guaranteed — we pay you a daily delay penalty if we miss the contracted finish date
• All-inclusive — design, engineering, permitting, and construction in one contract
• 324 interior combinations × 48 exterior styles — every option included in your price

Cons

• Floor plans are not modifiable — if you need a layout change, that becomes a custom project
• Maximum 1,200 sqft per California state law on the largest plan (The Culver)

Best for

Homeowners building new on a typical LA lot who want certainty on price and schedule.

Pros

• Lowest construction cost in the lineup — you save the cost of foundation, framing, and roof
• Fastest construction phase — existing structure means weeks, not months, of framing
• Preserves your backyard — the ADU goes where the garage already is
• Often qualifies for lower city fees and faster ministerial review

Cons

• You lose covered parking — California does not require replacement parking, but some buyers value it
• Size is limited by the existing garage footprint — typically 400 to 600 sqft
• May require structural upgrades if the existing garage was not built to current code

Best for

Homeowners with a usable attached or detached garage who want the fastest, lowest-cost path to a backyard rental or guest suite.

Pros

• Designed specifically for your lot — every constraint is a design opportunity
• Architectural freedom — rooftop decks, custom roof lines, integrated garages, anything within code
• Same fixed-price construction contract once design is finalized
• Same timeline guarantee on the construction phase

Cons

• Longer design phase — typically 12 to 20 weeks before permitting starts
• Higher total project cost — custom design and engineering carry a premium
• Pricing not fixed until design is complete — Signature plans give you the price on day one

Best for

Tight or unusual lots, multigenerational layouts that need a custom configuration, rooftop decks, attached garages, or any project that needs a building the Signature lineup cannot deliver.