Pricing depends on the square footage, whether you are building a detached backyard cottage or converting an existing garage, and the interior finishes you choose. As a general guide for the Los Angeles area:

• Garage conversion or Junior ADU (JADU): roughly $90,000 to $150,000
• Detached custom ADU (500 to 800 sq ft): roughly $180,000 to $260,000
• Larger detached luxury ADU (800 to 1,200+ sq ft): $280,000 to $350,000+

Site prep for hillside properties, trenching long utility lines, or foundation upgrades can influence final costs. We provide a written, itemized estimate after your free in-home consultation so there are no vague allowances or surprise line items later.

Most detached ADU construction takes three to five months of active on-site work. Garage conversions can often be completed slightly faster, typically within two to four months.

• Architectural design, structural engineering, title-24 energy calculations, and city permit approval take place before breaking ground and typically add two to four months
• Custom elements like cabinetry, specialized roofing, and window packages require lead times, so we order them early
• You receive a clear written schedule at the start and regular updates throughout the build

We streamline every phase to ensure your project moves forward smoothly without unnecessary delays.

Yes. KN Remodeling is a licensed Class B general contractor in California with more than 30 years of building experience. We carry full general liability and workers' compensation insurance on every project.

• Your project is managed from concept to completion by a dedicated project manager
• Structural framing, electrical panels, and plumbing connections are performed by licensed professionals and signed off by city inspectors
• You work with a reliable, consistent construction crew rather than a revolving door of subcontractors
• All structural and construction work is backed by our written warranty

Yes, building permits are strictly required for all new ADU construction and legal conversions. Permits for Los Angeles ADU projects are processed through the LA Department of Building and Safety (LADBS), including the Metro office at 201 N. Figueroa St. downtown and regional development centers such as the Van Nuys office serving the San Fernando Valley.

• Permits ensure your structure complies with local height limits, setbacks, and fire safety codes
• The City of Los Angeles' protected-tree regulations may apply if the property has mature oak or other protected trees
• Sewer capacity, driveway access, and lot coverage limits vary block by block, so we confirm the specifics for your address early

We handle all architectural filings, engineering reports, city reviews, and mandatory inspections so you don't have to navigate city bureaucracy on your own.

Los Angeles covers everything from flat valley lots to steep hillside parcels, so every neighborhood calls for its own planning approach:

• Neighborhood-Specific Zoning: Setback and lot-coverage rules can vary by neighborhood and zoning designation
• Hillside vs. Flatland: Sloped properties may need retaining walls and grading plans that flat lots don't
• Utility Connections: Determining whether to tie into the main house sub-panel or add a separate meter through LADWP
• HOA & Deed Restrictions: Some LA neighborhoods carry architectural guidelines beyond city code

We evaluate all of these site-specific conditions during your free initial consultation.