ADU Builder in Chatsworth, CA
Searching for ADU builder in Chatsworth? HMO Construction builds across Chatsworth and greater Los Angeles — licensed, bonded, and insured, with fixed written pricing and free estimates.
ADU Builder in Chatsworth
Detached and attached accessory dwelling units — also known as granny flats or in-law suites — from design and permit through framing, utilities, and final walkthrough. We handle the LADBS permit path and JADU/ADU code so your unit is rentable and inspection-ready.
Larger north-valley lots suit new construction and pools. Every Chatsworth project is run by one team from drawings to final walkthrough — no subcontractor runaround, no surprise pricing.
What's included
- Detached, attached & garage-conversion ADUs
- Design, drawings & city permit handling
- Full utilities: water, sewer, electrical sub-panel
- Title-24 energy compliance & inspections
- Rentable, move-in-ready finish
Why Chatsworth homeowners choose HMO Construction
We're a full-service general contractor based nearby in Reseda, so we know Chatsworth permitting, inspectors, and lot conditions. You get fixed written pricing before work starts, and we'll beat any legitimate estimate in town.
ADU Builder in Chatsworth — FAQ
How much does an ADU cost in Chatsworth?
Most Chatsworth ADUs run about $150k–$350k depending on size, site work, and finishes. After a free on-site visit we give you fixed written pricing — no surprises — and we’ll beat any legitimate quote.
How long does it take to build an ADU in Chatsworth?
Plan on roughly 2–4 months for design and permits in Chatsworth, then 3–5 months of construction. We manage the LADBS/city path so it keeps moving.
Do I need a permit for an ADU in Chatsworth?
Yes. ADUs require permits — we handle the drawings, submittal, and inspections for your Chatsworth property so the finished unit is legal and rentable.
Is an ADU the same as a granny flat in Chatsworth?
Yes — "granny flat," "in-law suite," and "ADU" all mean the same accessory dwelling unit under California and Chatsworth code. We build all three types: detached, attached, and garage-conversion.
Permits in Chatsworth
Chatsworth is part of the City of Los Angeles, so your ADU or addition is permitted through LADBS under the City of LA zoning code. That means the citywide ADU ordinance applies, and plan check runs through LADBS rather than a local city hall. We file the drawings and carry them through corrections and inspections.