Detached ADU

Constructum is an Arizona-based design and build firm with 23+ years of experience serving Scottsdale, Paradise Valley, and Phoenix. Specializing in ADUs, casitas, guesthouses, custom homes, and renovations, they manage permitting, design, and construction end-to-end.

As a female-owned business, we bring a fresh, inclusive approach to ADU design and construction, prioritizing comfort, functionality, and thoughtful details that make the space feel practical, welcoming, and easy to live in every day.

JDI Construction is a Portland-based ADU contractor offering full design-build services for detached, attached, garage conversion, basement, above-garage, and interior ADUs, including permits and eco-friendly practices.

Block Contracting specializes in crafting the best Accessory Dwelling Units (ADUs) in Oceanside, CA. Our designs are meant to enhance your property’s value and functionality. Whether you’re seeking a modern guest house, a stylish rental unit, pool house, or a versatile space for family.

J.A. Mejia Construction is a licensed ADU builder & home addition contractor in Sonoma County & the Bay Area. Services include detached ADUs, garage conversions, in-law suites & second-story additions in Santa Rosa, Petaluma & beyond.

Experienced ADU builder offering a streamlined 4-phase process: free consultation, pre-construction & permitting, construction, and final handover. Covers granny flats, Casitas, detached ADUs & in-law suites with full transparency.

Calpacific Contracting builds ADUs, casitas & garage conversions across Riverside, Orange, LA & San Bernardino Counties. 80+ years experience. Full-service: permits, design, construction & inspections handled end-to-end.

Logan's Retreat is a custom ADU in Reno, NV, built by Plenium Builders for a family needing accessible independent living. Featuring Trex cladding, mini-split HVAC, and full carpentry, this detached ADU blends functionality with modern design.

T&J Builders specializes in custom ADUs in Dover NH, Portsmouth NH, NH Seacoast, Lakes Region & Southern Maine. Services include garage conversions, in-law suites & detached cottages for rental income, multigenerational living & added property value.

From your first call to getting the keys — here's exactly what to expect.

We've designed a clear, step-by-step process so you always know what's happening, what comes next, and what it costs. No surprises. No guesswork.

The Springfield by Superior ADUs is a 2-bed, 2-bath detached ADU with open-concept living, vaulted ceilings, mini-split HVAC, kitchen island, ample storage, and optional ethanol fireplace—ideal as a granny flat or in-law suite.

SOHO Architecture & Construction offers full-service ADU design and build in San Diego, handling permitting, construction, and project management for detached, attached, garage conversion, and Junior ADUs with transparent communication and a warranty plan.

Excellent Home Remodeling offers professional home addition services in Sonoma, helping homeowners expand living spaces, add bedrooms, bathrooms, home offices, or in-law suites. They handle planning and execution tailored to each property's needs.

Lincoln James Construction (License #B-860952) builds custom ADUs in Ventura & Los Angeles Counties since 2005. Services include detached units, garage conversions, basement ADUs, in-law suites & rental-ready builds across Southern California.

Accuracy Remodeling LLC, serving Merced, CA since 2013, offers new construction, remodeling, and ADU contracting for residential and commercial clients. Licensed, insured, and free estimates available.