Accessory Dwelling Units (ADUs) Throughout the SF East Bay
Expertly Designed. Skillfully Built. Enduring Quality.
We Transform Your Property With Functional, Stylish ADUs That Add Space, Value, and Comfort.
Your ADU isn’t just an addition—it’s a space that should flow effortlessly, feel welcoming, and elevate your property.
Your ADU Should Function As Seamlessly As It Looks.
If your current space feels cramped, outdated, or underutilized, you notice it every day—limited storage, poor lighting, awkward layouts, walls that block flow.
An ADU isn’t just an addition; it transforms how you live.
At U.S. Accurate Construction, we design and build ADUs that enhance movement, storage, and comfort, while increasing your property’s value.
We handle design, structural work, permits, and construction. One team. One clear plan. No confusion.
Why Homeowners Choose Us
- Design-build team with engineering expertise
- Fast and efficient permitting process
- 5.0 stars on Google and Yelp
- Dust containment and clean work sites
- Transparent communication with clear timelines
Live Better With a Well-Designed ADU
Efficient Layouts. Premium Materials. Expert Construction.
A thoughtfully designed ADU transforms your property into a more usable, attractive, and valuable space.
Every element is crafted for ease, longevity, and aesthetic appeal, creating a home you’ll enjoy for years.
Complete ADU Solutions, From Start to Finish. We manage design, engineering, permits, and construction—every step handled by a single team, so your project runs smoothly and clearly.
Custom Layout & Floor Plan
Tailored layouts designed to meet your needs—whether it’s a bedroom, full kitchen, bathroom, or open studio space.
Every floor plan maximizes flow, functionality, and comfort.
High-End Materials & Finishes
Durable flooring, cabinetry, countertops, and fixtures installed with precision.
We combine style and longevity to create spaces that look beautiful and stand the test of time.
Lighting & Electrical
Layered lighting solutions enhance comfort, usability, and ambiance.
All electrical systems are efficient, code-compliant, and designed to support modern appliances and technology.
Outdoor Integration
Seamless connections to patios, decks, or landscaped areas extend your living space outdoors.
Thoughtful design ensures privacy, natural flow, and enjoyment of your property’s full potential.
Energy Efficiency & Sustainability
Eco-friendly insulation, windows, and appliances help reduce energy costs and environmental impact while maintaining year-round comfort.
Smart Home Features & Connectivity
Optional smart thermostats, lighting, security, and high-speed internet wiring make your ADU modern, convenient, and ready for today’s lifestyle.
Our Process
You deserve clarity at every step.
Here’s how we guide your ADU project from concept to completion.
Step 1 – Consultation & Vision
We start by visiting your property to understand your goals, lifestyle, and ideas. Together, we review your site’s conditions, zoning regulations, and any existing limitations. This initial consultation ensures your vision aligns with what’s feasible, setting the foundation for a successful ADU project.
Step 2 – Design & Planning
Our team develops detailed layouts, 3D renderings, and finish selections tailored to your style and needs. We plan structural work, utilities, and permit requirements before construction begins, so every detail is accounted for and your project flows smoothly.
Step 3 – Proposal & Project Schedule
You receive a comprehensive proposal outlining the full scope of work, transparent pricing, and a realistic timeline. Every milestone and expectation is clearly defined, giving you confidence and eliminating surprises throughout the project.
Step 4 – Construction & Completion
We bring your ADU to life with careful construction practices, including dust containment, air filtration, and daily cleanup to minimize disruption. Once construction is complete, we conduct a thorough walkthrough to ensure every detail meets your expectations, leaving you with a functional, beautiful, and long-lasting space.
Ready To Add An ADU To Your Property?
Book your consultation.
We’ll guide you with clarity and confidence.
Accessory Dwelling Units (ADUs) Frequently Asked Questions
An ADU is a self‑contained secondary living space built on the same lot as your primary home. It typically includes a kitchen, bathroom, and living area, and can be detached, attached, or converted from existing space like a garage or basement.
There are several ADU types:
Detached ADU: A standalone structure, like a backyard cottage.
Attached ADU: Built next to or as part of the main house.
Conversion ADU: Created by converting existing space (e.g., garage or attic).
Junior ADU (JADU): Smaller unit (often under 500 sq ft) typically carved from interior space and shares some infrastructure with the main house.
ADU costs vary widely based on size, design, and features. Typical ranges can be from $100,000 to $400,000+, with custom builds, high‑end finishes, and larger units at the upper end. This cost includes construction, materials, permits, utility connections, and finishing.
Yes. Building an ADU requires permits from your local municipality. Permits ensure your ADU complies with zoning, building codes, safety standards, and utility requirements. Working with a professional builder helps streamline this process and reduces delays.
Yes. ADUs typically increase a property’s value because they add usable square footage and flexibility. Real estate experts estimate that properties with permitted ADUs can sell faster and command higher prices than similar homes without them.
ADUs offer multiple benefits:
Rental income from long‑term or short‑term leasing
Guest or family housing for aging relatives or adult children
Home office or creative space
Increased property equity and appeal
Flexible living options without relocating.
A complete ADU project — from design and permitting to construction — typically takes several months, though timelines vary depending on complexity, site conditions, and local permit turnaround times. Your contractor can provide a detailed schedule once plans are finalized.
ADUs require connections for water, sewer (or septic), electrical, and HVAC. Some municipalities allow shared services, while others require separate meters. This can impact cost and setup, so planning utility connections early is essential.
In many areas, ADUs can be rented for long‑term housing, which can generate steady income. However, short‑term rentals (like Airbnb) may be restricted or regulated differently by local laws, so it’s important to check your city’s ordinance.
Yes — beyond basic construction costs, homeowners should consider utility upgrades (like electrical panel expansion), site preparation, landscaping, impact fees, and potential increases in property taxes. Planning for these ahead of time helps avoid budget surprises.
Accessory Dwelling Units (ADUs) Advice & Design Trends
Explore professional tips, design trends, and planning strategies to build an ADU that’s functional, comfortable, and enduring.
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