ADU Builder · Woodland Hills
Woodland Hills has some of the Valley’s best ADU lots. Yours likely has room for a detached second home, permitted through LADBS and built like part of the property.
ADU Builder in Woodland Hills
Woodland Hills lots run larger than most of LA. That extra ground means a detached ADU doesn’t have to crowd the main house. Maybe it becomes a rental with real privacy. Maybe it houses your parents. Or maybe it’s finally the office and gym the garage never quite became.
Athenian Builders Group is a licensed California contractor (CSLB #1045030) that designs, permits, and builds Woodland Hills ADUs with its own crews. You approve a fixed itemized price before we start, and every build carries a written 2-year workmanship warranty. See our full ADU construction services.
Permits
Woodland Hills is part of the City of Los Angeles, so ADU permits go through LADBS. We draw the plans, file the application, answer the plan-check corrections, and meet the inspector at every stage through final approval. You never stand in line at the city counter.
Transparent Pricing
These are real 2026 ranges for the LA area, not teaser numbers. Size, lot conditions, and finishes decide where you land. After a free on-site visit, we give you a fixed, itemized price, and that number holds.
| ADU Type | Typical Size | Typical Cost (2026) |
|---|---|---|
| Garage Conversion | 300–500 sq ft | $100k – $180k |
| Junior ADU (JADU) | up to 500 sq ft | $90k – $160k |
| Attached ADU | 400–800 sq ft | $180k – $320k |
| Detached New-Build | 500–1,200 sq ft | $250k – $450k |
Typical ranges for 2026, not quotes. Financing available: remodel financing options. Considering a smaller in-home unit? See our Junior ADU page.
Estimated project cost
Why Athenian
Plenty of “ADU builders” never pour a footing. They sell the design, then broker the construction to whoever answers the phone. We keep the whole job in-house. Our team designs it, pulls the LADBS permits, and builds it with our own crews. You get one point of contact, a fixed itemized price approved before we start, and a written 2-year workmanship warranty on everything we build in Woodland Hills.
Questions
Yes, hillside lots included. We design and build detached ADUs, garage conversions, and JADUs across Woodland Hills, and our own crews handle the construction.
Woodland Hills is within the City of Los Angeles, so LADBS issues the permits. We handle the drawings, the filing, and every inspection.
A garage conversion typically runs $100k–$180k, while a detached new-build lands between $250k–$450k. You get a fixed, itemized price after a free on-site walkthrough.
Most of our ADUs finish in 3 to 5 months of construction. City review adds lead time up front, and type and size matter. You approve a firm timeline in writing before we start.
Start with a free on-site feasibility visit. We’ll walk the lot and hand you a fixed, itemized price for your Woodland Hills ADU. Call (310) 857-2520. You’ll know the full cost before we break ground.
Takes about a minute. We reply the same business day and set up a free on-site visit.
