Carthay Square ADU Construction That Respects the Tract

ADU Construction Questions Homeowners Ask About ADU Construction in Carthay Square

How much does an ADU cost to build in Carthay Square in 2026?

Fixed quotes run $185,000 to $345,000 inside the Carthay Square HPOZ. The $185K-$235K band covers a 400-600 square foot detached ADU with Spanish Colonial Revival massing. $245K-$295K covers a 700-900 square foot detached with full period-correct architecture. $310K-$345K covers a 1,000-1,200 square foot detached or a complex garage-to-ADU conversion.

Do you handle the Carthay Square HPOZ Certificate of Appropriateness submittal?

Yes. Pre-application meeting with HPOZ staff, design submittal, staff review, board hearing, Certificate of Appropriateness, then LADBS permit. Total HPOZ timeline runs 10-16 weeks. We have not had an ADU denied at first board hearing in Carthay Square.

Will my ADU need to match my Spanish Colonial Revival main house?

Yes — the HPOZ board requires it for any new structure visible from a public right-of-way. We do a formal architectural matching study documenting roof pitch, eave depth, window proportions, stucco color, and tile material. The ADU references these features without copying them.

Are you EPA RRP certified for lead-safe work on pre-1978 properties?

Yes. Carthay Square homes are almost universally pre-1978, so any demo of the existing garage or any work that disturbs painted surfaces of the main house triggers lead-safe protocols. We're certified and we apply the protocols on every Carthay Square job.

Can I convert my original 1920s garage to an ADU?

Sometimes, but often new construction is the better answer. Most original Carthay Square garages are wood-framed with low-quality foundations that don't meet modern code. We do the structural review up front.

What is the total timeline from contract to certificate of occupancy?

16-26 weeks for HPOZ approval and LADBS permit. 14-20 weeks for construction. Total contract-to-CO runs 30-46 weeks. Slower than non-HPOZ neighborhoods, but the design holds more resale value.

What are ADU rents in Carthay Square in 2026?

Rents run $2,400 to $3,100 a month for a 400-600 square foot one-bedroom and $3,200 to $4,300 a month for a 700-900 square foot two-bedroom — slightly higher than nearby Country Club Park because of proximity to the Beverly Center and Cedars-Sinai. Gross yield around 15% at a $215K build cost.