ADU Builder in Simi Valley, CA
Searching for ADU builder in Simi Valley? HMO Construction builds across Simi Valley and greater Los Angeles — licensed, bonded, and insured, with fixed written pricing and free estimates.
ADU Builder in Simi Valley
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.
New construction and additions across Simi Valley. Every Simi Valley 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 Simi Valley homeowners choose HMO Construction
We're a full-service general contractor based nearby in Reseda, so we know Simi Valley 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 Simi Valley — FAQ
How much does an ADU cost in Simi Valley?
Most Simi Valley 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 Simi Valley?
Plan on roughly 2–4 months for design and permits in Simi Valley, 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 Simi Valley?
Yes. ADUs require permits — we handle the drawings, submittal, and inspections for your Simi Valley property so the finished unit is legal and rentable.
Is an ADU the same as a granny flat in Simi Valley?
Yes — "granny flat," "in-law suite," and "ADU" all mean the same accessory dwelling unit under California and Simi Valley code. We build all three types: detached, attached, and garage-conversion.
Permits in Simi Valley
Simi Valley is an incorporated city in Ventura County, so permitting runs through the City of Simi Valley — not through Los Angeles County or LADBS. Different code adoption cycle, different fee schedule, different inspectors. We handle the filing and the plan-check corrections.