Detached ADU Specialists
DADU Builders
Mercer Island
Maksymov Brownstone LLC is the DADU builder Mercer Island homeowners turn to for reliable results at every stage of a detached accessory dwelling unit project. We design and construct standalone backyard homes shaped around your property and long-term goals.
From the first consultation to final handover, our experienced team manages each phase with precision and real knowledge of Mercer Island local conditions.
Our Expertise
Trusted DADU Building Services for Lasting Value
Adding a detached accessory dwelling unit to your Mercer Island property is one of the smartest upgrades available to homeowners today. It unlocks more usable space for a private office, guest quarters or stable rental income. This is more than a practical improvement — it is a meaningful investment in your property's long-term future.
Our DADU builders bring hands-on local knowledge to every Mercer Island project. As an experienced Mercer Island DADU contractor, we navigate zoning requirements, permit workflows and site limitations with confidence. Each build is managed by a licensed team committed to code compliance, quality construction and results that last.
We take ownership of the full process from initial planning to final sign-off. Every step stays transparent, well-coordinated and on schedule. That consistent approach is how we earn the trust of Mercer Island homeowners on every DADU project we complete.
What We Build
Our DADU Services
Expert DADU Home Transformation Services in Mercer Island — when homeowners search for a reliable DADU builder "near me", they choose us for consistent quality and code compliance. We deliver detached accessory dwelling unit solutions tailored to each Mercer Island property.
Modern Backyard Cottages
Standalone cottage-style structures designed for Mercer Island lots — built for everyday comfort and long-term durability.
Two-Story Detached Units
Custom two-level floor plans that maximize vertical space on compact Mercer Island lots without expanding the footprint.
Rental-Ready Backyard Homes
Backyard homes in Mercer Island built from day one with rental performance in mind — functional, code-compliant and income-ready.
Eco-Friendly DADU Designs
Energy-efficient Mercer Island DADU builds using sustainable systems that reduce operating costs and meet local green standards.
Detached Home Office Suites
Purpose-built backyard office spaces in Mercer Island — quiet, insulated and fully separated from the main residence.
Garage-to-DADU Transformations
Full garage conversion into livable DADU space in Mercer Island — permits managed, code-compliant and professionally finished.
Flexible Layout Options
Adaptable DADU layouts built around Mercer Island lot constraints — every square foot planned and purposefully used.
Fully Custom Backyard Living
Completely bespoke backyard living solutions in Mercer Island designed around your vision, lifestyle and long-term property goals.
How It Works
Our Proven DADU Construction Process
Site Visit & Feasibility Review
We begin with a thorough visit to your Mercer Island property to evaluate the layout, access points and available utility connections. Our team confirms project feasibility and provides a clear early cost outline.
Tailored Architectural Design
Our designers create detailed custom plans and straightforward 3D visualizations based on your Mercer Island lot and preferences. Every design decision is made to complement your existing home and neighborhood.
Permit Filing & City Coordination
As your Mercer Island DADU contractor, we manage all permit applications and coordinate with the city on your behalf. Your detached accessory dwelling unit project stays compliant and on schedule from day one.
Full Construction Management
Our DADU builders in Mercer Island oversee every construction phase from foundation through finish. We maintain a clean, organized site and minimize disruption to your household throughout the entire build.
Handover & Move-in Ready
Once all final inspections and approvals are complete, we hand over your finished Mercer Island DADU. The space is fully ready for immediate use — whether for personal living, family or rental occupancy.
Portfolio
Our DADU Projects
Reviews
What Our Clients Say
"Maksymov Brownstone built our backyard DADU from the ground up. The process was smooth, the team was easy to communicate with and the result exceeded our expectations."
James K.
"I was nervous about the permit process but they handled everything. Our detached unit is beautiful, fully compliant and already generating rental income."
Sarah M.
"Professional from start to finish. They knew exactly what our lot could handle and designed a DADU that fits perfectly. Couldn't be happier."
Tom R.
Where We Work
DADU Builders Across the Seattle Metro
We build detached accessory dwelling units throughout King County. Find your city below for local DADU building services.
About Us
Trusted DADU Builders in Mercer Island
Maksymov Brownstone LLC is a family-owned residential construction company with over 17 years of experience delivering results homeowners rely on. As a trusted DADU builder in Mercer Island, our team manages every project from feasibility review through final completion. We are fully licensed and bonded, providing Mercer Island homeowners with confidence at every phase.
We specialize in ground-up detached unit construction and bring deep knowledge of site conditions, local zoning and Mercer Island-specific permit requirements. Our approach is straightforward — build quality DADU homes in Mercer Island that align with your property, serve your needs and hold long-term value.
FAQ
FAQ – DADU Construction
Planning a DADU project in Mercer Island involves many decisions around budget, timeline and local regulations. Here are the most common questions Mercer Island homeowners ask before getting started.
How much does it cost to build a DADU in Mercer Island?
The cost of a detached accessory dwelling unit in Mercer Island depends on the size, design complexity and how utilities need to be connected to the site. No two properties are identical, which means pricing always requires a site visit. As your Mercer Island DADU builder, we evaluate your lot, listen to your goals and prepare a transparent, itemized estimate so you can plan your budget with full clarity from the start.
What are the requirements for a DADU on my Mercer Island property?
Each Mercer Island property must meet specific rules before a DADU can be permitted. These typically involve minimum lot size, setback distances from property lines, height restrictions and allowable lot coverage. As your experienced Mercer Island DADU contractor, we review your existing setup, evaluate available space and verify zoning compliance before committing to a design. This ensures your project moves forward on solid ground.
How long does a DADU construction project take in Mercer Island?
Timelines in Mercer Island vary based on the scope of your project. Simpler builds with straightforward permits can move quickly, while larger or more complex designs take longer through design, approval and construction phases. Our Mercer Island DADU team keeps every phase organized and clearly communicated so you always know where your project stands and what comes next.
Why should I choose a local DADU builder near me in Mercer Island?
Working with a DADU builder who operates in Mercer Island every day means you get a team that already knows the local permit process, zoning requirements and inspection standards. This firsthand knowledge prevents delays, reduces back-and-forth with the city and leads to a faster, smoother build. When Mercer Island homeowners search for a builder "near me", local experience consistently produces better outcomes.
Start Your DADU Project Today
Free site consultation — no pressure, just honest answers about your property.
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Contact us
maksymov.brownstone@gmail.com
Phone
(425) 800-7663
Mon – Fri
9 am – 6 pm
Saturday
9 am – 1 pm