Smart, Functional, and Beautiful Backyard Homes.
Pelayo Built designs and builds Accessory Dwelling Units (ADUs) that expand living space, increase property value, and create flexibility for homeowners across Marin and Sonoma Counties.
Custom ADUs Built for Living, Family, and Flexibility.
Whether you’re building a guest house, in-law suite, or rental unit, an ADU offers freedom and long-term value. Pelayo Built specializes in designing and constructing ADUs that feel private, functional, and beautifully finished — not like an afterthought.
Our team manages the entire process: design, permitting, construction, and final inspection. We’re familiar with California’s ADU regulations, setback requirements, and energy standards, ensuring compliance while delivering exceptional craftsmanship.
From foundation and framing to custom interiors, Pelayo Built builds ADUs that fit your property, your lifestyle, and your future plans.
ADU Construction – Our Process
We simplify a complex process — guiding you from concept to completion with clear communication every step of the way.
Consultation & Site Evaluation
We assess your property, zoning, and goals to determine the best ADU type — detached, attached, or garage conversion.
Design & Permitting
Our team assists with architectural design and coordinates permits in compliance with California ADU laws and local building codes.
Construction & Project Management
Our in-house carpenters and trusted trade partners handle all phases — foundation, framing, plumbing, electrical, and finishes — under one coordinated schedule.
Interior & Exterior Finishing
Every detail, from flooring to siding, paint, and fixtures, is completed to the same high standard as our primary home remodels.
Final Inspection & Walkthrough
We review your completed ADU with you, ensuring it meets code, exceeds expectations, and is ready for living or renting.
Why Homeowners Choose Pelayo Built for ADUs
● Experience with California ADU codes and local permitting.
● Seamless design-to-build process from start to finish.
● Complete project oversight — coordination with trusted trades.
● Energy-efficient and durable building materials.
● Licensed, insured, and family-owned in Marin & Sonoma Counties.
ADU Inspiration & Possibilities
Explore the types of ADUs we can create — from small studios and guest cottages to multi-room units designed for comfort and privacy.
Detached Backyard ADU
Garage Conversion
Guest House Suite
In-Law Apartment
Compact Rental Unit
Accessory Dwelling Unit (ADU)
Ready to Build Your ADU?
Whether it’s for family, guests, or rental income, we’ll help you design and build an ADU that enhances your property and your future.