Turnkey ADU Construction Services in Pasadena, CA
You want a hassle-free accessory dwelling unit that adds value and works from day one without coordinating multiple trades or chasing permit approvals. Pasadena Master ADU Builder delivers complete turnkey ADU construction in Pasadena by managing architectural design, structural engineering, permit expediting, foundation work, framing, electrical rough-in, plumbing installation, HVAC systems, and final inspection coordination so you receive a move-in ready unit with one point of contact. We handle zoning compliance, setback requirements, Title 24 energy calculations, fire safety systems, and design review board submittals while using quality materials like Hardie siding, dual-pane windows, and tankless water heaters that meet California building standards and maximize long-term durability.
Our team brings local expertise and a proven process that fits Pasadena zoning codes and streamlines the typically complex ADU approval timeline. Expect clear communication through project management software, realistic schedules with milestone tracking, and quality craftsmanship from licensed subcontractors as we take your project from concept to certificate of occupancy. We outline our full-service approach covering site assessment, custom design tailored to your property layout, construction scheduling, budget protection with fixed-price contracts, and proactive problem-solving that keeps your timeline on track while delivering a finished ADU that passes all inspections and adds immediate rental income or multigenerational living space to your property.
Complete Project Management and Delivery for Turnkey ADUs
We manage every stage from permitting through move-in with clear schedules, cost controls, and on-site supervision. Our team coordinates designers, inspectors, and subcontractors so you avoid juggling vendors or paperwork.
Full-Service Project Oversight
We assign a dedicated project manager who becomes your single point of contact. They create a detailed timeline and phased budget that lists milestones such as permit submission, foundation, framing, rough-ins, and finish work.
We handle permit applications, plan revisions, and city inspections for Pasadena and surrounding jurisdictions. That includes digital plan filing, tracking inspection dates, and responding to plan-check comments to prevent delays.
We run weekly coordination meetings with architects, engineers, and trade partners. We document progress with photos and schedule updates so you always know what to expect. Change orders require written approval and a revised cost and schedule estimate before work continues.
Construction and Quality Assurance
We follow a standardized quality checklist tailored to turnkey ADU builds. Inspections occur at critical stages: foundation and utilities, framing and envelope, mechanical-electrical-plumbing rough-ins, and final finishes.
Our site superintendent enforces safety protocols and verifies subcontractor credentials and insurance. We source materials to match specified performance and aesthetics and perform spot checks to confirm proper installation.
We test systems before drywall and again at final trim to ensure HVAC balance, water pressure, and electrical circuits meet code and design intent. When deficiencies appear we issue punch list items with completion deadlines. We track remediation and retest affected systems to confirm resolution.
Final Inspections and Handover
We coordinate final municipal inspections, provide required documentation, and attend city sign-offs to obtain occupancy approval. We compile and deliver a project closeout packet that includes as-built drawings, permit copies, warranties, and maintenance guides for appliances and systems.
We walk the finished turnkey ADU with you to review the punch list, demonstrate system operation, and document any remaining items. We schedule a follow-up at 30 days to address warranty items and ensure the unit performs as intended.
We offer a clear warranty and a contact path for service requests after handover. Our goal is a smooth transition so you can rent, occupy, or manage the ADU without administrative burden.
Our Turnkey ADU Construction Process
We manage every phase from first meeting to final permit, so you get a move-in-ready ADU without coordinating multiple contractors. We focus on clear timelines, cost transparency, and compliance with Pasadena and Los Angeles County rules.
Initial Consultation and Needs Assessment
We start with an on-site visit to evaluate lot size, setbacks, utility access, and existing structures. During this visit, we measure the site, photograph conditions, and confirm zoning constraints that affect ADU placement and size. We review your goals for the ADU. Tell us if you want long-term rental income, a granny unit, or a home office. We document required bedroom count, preferred finishes, parking plans, and accessibility needs.
We provide a preliminary budget range and an estimated schedule. That estimate includes design fees, permit fees, construction costs, and utility connection allowances. We also identify any potential scope issues like easements or historic-district requirements. We record decisions and next steps in a project brief you receive within 48 hours. That brief includes a proposed contract outline so you can approve moving into the design phase.
Custom ADU Design and Architecture
We assign an architect and designer who create plans tailored to your property and budget through our custom ADU architectural design service. They produce floor plans, exterior elevations, and a materials list that reflect energy efficiency, local style, and your aesthetic preferences. We use iterative reviews so you see 2D plans and a simple 3D massing model early. You review layout options for kitchen, bath, storage, and mechanical closets. We refine plans to improve natural light, privacy, and circulation while staying within allowable square footage.
We prepare a detailed scope of work and fixed-price estimate tied to the approved design. That document lists finishes, fixtures, HVAC strategy, insulation levels, and window schedules. It also identifies long-lead items and an expected procurement timeline. We coordinate with structural and MEP consultants when required. Their input ensures the design meets structural, plumbing, and electrical loads while preserving the design intent.
Permitting and Project Approvals
We handle all permit submissions and communications with Pasadena Building and Safety and relevant county departments. Our permit package includes stamped architectural plans, engineering reports, energy compliance forms, and any required soils or arborist reports. We track submittal status and respond to plan check comments on your behalf. When revisions are requested, we log each change and deliver an updated plan set with a clear list of corrections for your records.
We coordinate inspections and finalize utility connections. That includes scheduling rough and final inspections, confirming water and sewer tie-ins, and helping with any required parkway or driveway permits. We provide a permit closeout checklist so you know which approvals are complete. That checklist also documents warranties, lien releases from subcontractors, and copies of final signed permits needed for rentals or resale.
Why Choose Us for Turnkey ADU Construction
Local Expertise and Experience
We have 20 years of ADU design and construction experience in Pasadena, Altadena, and nearby Los Angeles neighborhoods. We know Pasadena Planning Department filing requirements, setback rules, and common inspection points that slow projects down. That local knowledge helps us prepare permit‑ready plans that pass initial review more often, and reduces rounds of revisions.
Our crews have built detached units, garage conversions, and attached additions across varied lot sizes and street conditions. We coordinate soil reports, utility ties, and historical district considerations when needed. Our architects and project managers meet with inspectors and zoning officials directly so you avoid surprises and costly rework.
Transparent Project Pricing
We provide itemized estimates that break down site work, framing, mechanicals, finishes, and permitting fees. Each proposal shows payment milestones tied to specific deliverables so clients know exactly what they pay for and when. We include probable ranges for utility upgrades and impact fees so you can plan contingencies.
Change orders are documented with cost and schedule impacts before we proceed. We track allowances for cabinets, flooring, and appliances and explain how selections affect the final price. That approach keeps most projects on budget and minimizes billing confusion during construction.
Exceptional Client Communication
We use a single point of contact for every ADU project so clients get consistent updates. Our project managers share weekly progress photos, a short status note, and upcoming inspection or selection dates. We also maintain a shared online folder for plans, permits, and invoices so documents remain available throughout the build.
We schedule in‑person walkthroughs at key milestones including foundation, rough‑in, and final finish. When issues arise, we present solutions with costs and timelines, and get client approval before work continues. This keeps decisions transparent and builds trust from permit submittal through final inspection.
Frequently Asked Questions About Turnkey ADU Construction
What does turnkey ADU construction include?
Turnkey ADU construction includes every phase from initial design and architectural plans through final certificate of occupancy. This encompasses site evaluation, permit acquisition, foundation and framing, all utility connections including electrical, plumbing, HVAC, gas and sewer, interior finishes, exterior work, fire safety systems, appliance installation, landscaping restoration, and final inspections, delivering a completely move-in ready ADU.
How much does a turnkey ADU cost in California?
Turnkey ADU construction in California typically costs between $250,000 and $500,000 depending on size and finishes, averaging $350-$550 per square foot. A 600-square-foot studio ranges from $210,000-$330,000, while 1,200-square-foot two-bedroom units cost $420,000-$660,000 including all design fees, permits, materials, labor, utility connections, appliances, and landscaping.
How long does turnkey ADU construction take?
Turnkey ADU construction typically takes 9 to 14 months from initial consultation to certificate of occupancy, including 2-3 months for design and engineering, 2-4 months for permit approval through Pasadena Building & Safety Department, and 5-7 months for construction. Streamlined projects complete in 8-10 months while complex custom ADUs may extend to 16-18 months.
What's the difference between turnkey and traditional ADU construction?
Turnkey ADU construction provides a single contractor managing all phases from design through completion with fixed pricing and timeline commitments, while traditional construction requires homeowners to separately hire architects, engineers, and general contractors. Turnkey eliminates coordinating multiple vendors, navigating permitting independently, and troubleshooting subcontractor conflicts, providing accountability and warranty coverage under one contract.
Do turnkey ADU builders handle permits and approvals?
Yes, turnkey ADU builders handle all permits and approvals including zoning verification, architectural plan submission to Pasadena Building & Safety Department, structural engineering stamps, Title 24 energy compliance, fire sprinkler approval, plumbing and electrical permits, utility connection approvals from Pasadena Water and Power, and coordination of all inspections throughout construction until final certificate of occupancy.