A1 Building Contractors LLC

Detached ADU Services in Sacramento, CA

A1 Building Contractors builds detached accessory dwelling units (ADUs) in Sacramento, CA. With over 20 years of expertise and a client-first approach, we take pride in delivering high-quality, sustainable ADUs that comply seamlessly with local regulations. Whether you’re looking for a pre-approved design or a fully custom creation, we’re here to bring your vision to life.

Compact kitchen with white cabinetry, stainless steel appliances, a large sink, and wood flooring lit by natural light.
Gray single-story building with dark roof, surrounded by greenery and plants, under a clear blue sky.
Modern kitchen with light wood cabinets, black countertops, gas stove, microwave, and adjacent living area with a black sofa.
Aerial view of a partially constructed building with a sloped roof in a fenced backyard, surrounded by trees and other houses.
A small black house with French doors opens onto a patio, featuring outdoor seating, a red umbrella, and a jacuzzi.
Modern bathroom with a glass shower, circular mirror, vanity with vessel sink, and washing machine on the side.
Small white shed with a blue door, flanked by a patio set and striped rug, surrounded by trees and greenery.
Modern kitchen with blue cabinets, stainless steel appliances, wood floor, and a ceiling fan. Door opens to outside.
A modern kitchen with white cabinets, stainless steel appliances, light wood flooring, and a tile backsplash.
Modern kitchen with stainless steel appliances, white cabinets, wood countertops, a ceiling fan, and wood flooring.
Bathroom with blue cabinets, wood flooring, a round mirror, and a glass-enclosed shower with white tiles.
Minimalist living room with a gray couch, wall-mounted TV, air conditioner, and a large fridge, featuring a window with greenery outside.

Tailored Designs for Every Lifestyle

We understand that every homeowner’s needs are unique, which is why we offer both county-approved ADU plans and fully custom designs. Our pre-approved plans are a fantastic choice for those who want to fast-track the permitting process and begin construction without delay. Our custom design services allow you to create a detached ADU that perfectly suits your lifestyle, property layout, and aesthetic preferences.

From modern studios to multi-room guest houses, our team works with you to maximize space and functionality while ensuring your ADU complements your existing property. With a focus on sustainability, we incorporate energy-efficient systems, high-quality materials, and innovative building practices into every project, giving you a space that’s both beautiful and environmentally friendly.

Spacious empty room with wooden floor, white walls, ceiling fan, and recessed lighting. Two open doorways lead to adjacent rooms.
Minimalist bathroom with white walls, wooden countertop, white cabinets, a small window, and a tiled shower area.
Modern tiny house with a flat roof, white panel exterior, and black trim, surrounded by greenery and garden landscaping.
Small white house with a black metal roof, wooden beams, and a porch, surrounded by trees and plants.
A backyard with a small gray shed, unfinished landscaping, and a pool area. Overcast sky and scattered lawn equipment visible.
Bright home office with a desk, chair, shelving unit, and large windows. Glass doors lead to a patio with outdoor furniture.
Modern kitchen with gray cabinets, stainless steel appliances, white subway tile backsplash, and wood-look flooring.
Modern kitchen with white cabinets, stainless steel appliances, wooden countertops, and a single window above the sink.
Single-story blue house with a brown-tiled roof, large windows, and a surrounding garden with shrubs and small trees.
Modern kitchen with gray cabinets, stainless steel appliances, tile backsplash, wood flooring, and a window above the sink.
Modern kitchen with gray cabinets, white subway tile backsplash, stainless steel sink, and a pendant light over the counter.
Aerial view of a small building with a sloped roof, surrounded by trees and fences, located near a railway track.

Expertise in Local Regulations and Permitting

Building a detached ADU in Sacramento doesn’t have to be overwhelming. At A1 Building Contractors, we’re experts in navigating local zoning laws and regulations, ensuring your project moves forward without delays or surprises. Our in-depth understanding of Sacramento’s permitting process means we handle all the paperwork and compliance requirements for you, making the process as seamless as possible. By choosing us, you’ll have peace of mind knowing that your ADU is built to meet all local standards while enhancing the value and usability of your property.

Unlike other companies, we offer end-to-end project solutions, meaning everything from design and permitting to construction and finishing touches is handled under one roof. This approach ensures clear communication, streamlined workflows, and a finished product that exceeds expectations.

For more information, contact us for a free consultation.

WE LOOK FORWARD TO WORKING WITH YOU

Get Started Today!

A1 Building Contractors LLC