10+ Years of Experience
ADU Builders
Tukwila
Maksymov Brownstone LLC is the ADU builder Tukwila homeowners call when the lot has limits and the project still has to pencil out.
We design and build custom ADUs that fit the house, the site, and the permit path from day one.
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Our Expertise
Expert ADU Builder in Tukwila: Maximize Your Property
An ADU in Tukwila can solve two problems at once: create rental income and add flexible living space without forcing a move. The city allows ADUs on parcels with a principal residential unit, with no minimum lot size as long as development standards are met, and current rules allow up to two ADUs per principal unit. That opens options, but it does not make the project simple. Footprint limits, setbacks, parking, and site conditions still decide what works.
What We Build in Tukwila
- Custom Detached ADUs
- Attached Accessory Dwelling Units
- Garage-to-ADU Conversions
- Basement ADU Apartments
- Multi-Generational Living Suites
- Turnkey ADU Construction
- Custom design for your lot
- Full-service contractor support
Our Advantages
Why Tukwila Homeowners Trust Our ADU Building Team
Local Tukwila ADU Contractor
Our team handles Tukwila permits and city-specific approvals daily, keeping projects compliant and moving without costly delays.
Upfront Cost Estimate
We break down the full build price before any work begins, so you can plan your budget confidently with no hidden fees.
Organized Project Timeline
From design to final inspection, your Tukwila ADU stays on schedule through every phase of the build process.
Quality-Built ADU Homes
Every Tukwila ADU we build uses durable materials and careful workmanship that meets local standards and stands the test of time.
Responsive Client Support
Quick replies and regular updates keep Tukwila homeowners informed at every stage, from first consultation to final handover.
Proven Tukwila ADU Builder
Homeowners in Tukwila choose us for consistent results, completed projects and a track record that speaks for itself.
Building an ADU in Tukwila can feel overwhelming
Planning an ADU in Tukwila comes with its own set of challenges — zoning rules, permits and tight budgets. Many homeowners feel uncertain about where to begin. With experienced accessory dwelling unit builders who know Tukwila, the path forward becomes much clearer.
Where Do I Even Start?
The Tukwila ADU process — design, city approvals, construction — can feel impossibly complex for first-time builders.
Hidden Costs
Unexpected fees and vague quotes leave homeowners over budget before construction even begins.
Delays & Unreliable Contractors
Missed deadlines and poor coordination drag projects on for years — costing time and money.
Lack of Clear Communication
Homeowners are often left in the dark, unsure of progress or next steps on their project.
Reliable ADU construction in Tukwila — no surprises, just proven results.
What We Build
ADU Services in Tukwila
Homeowners in Tukwila looking for a trusted ADU builder near me choose a team that understands local site conditions and Tukwila city code. We deliver new builds and ADU remodels tailored to your specific lot, goals and budget.
Basement Conversion
Transform your underutilized basement into a self-contained ADU — fully legal, permitted, and designed for comfortable living in Tukwila.
Garage Conversion
Convert your attached or detached garage into a stylish, code-compliant ADU unit in Tukwila — often the fastest and most cost-effective path.
Attic Conversion
Maximize your Tukwila home's vertical space with a beautifully finished attic ADU — ideal for rental income or a private guest suite.
Portfolio
Recent ADU Projects in Tukwila
University District Seattle Kitchen Renovation
How It Works
Our Process
Site Assessment
We review lot size, zoning, setbacks, utilities, parking, and site constraints first, because in Tukwila the land usually decides the smartest ADU path.
Custom Design
Then we build a layout that fits the main house, solves circulation cleanly, and makes the new unit feel planned instead of squeezed in later.
Permitting
We prepare the permit package and coordinate local review, including extra studies if the site touches flood areas, wetlands, watercourses, geologic hazards, or coal mine hazard areas.
Construction
From foundation through framing, insulation, utility tie-ins, and finishes, our crew builds the ADU in a tight sequence with close field control.
Turnkey Delivery
After inspections pass, we finish the last details and hand over a completed ADU ready for family use, guests, or long-term rental.
Site Assessment
We review lot size, zoning, setbacks, utilities, parking, and site constraints first, because in Tukwila the land usually decides the smartest ADU path.
Custom Design
Then we build a layout that fits the main house, solves circulation cleanly, and makes the new unit feel planned instead of squeezed in later.
Permitting
We prepare the permit package and coordinate local review, including extra studies if the site touches flood areas, wetlands, watercourses, geologic hazards, or coal mine hazard areas.
Construction
From foundation through framing, insulation, utility tie-ins, and finishes, our crew builds the ADU in a tight sequence with close field control.
Turnkey Delivery
After inspections pass, we finish the last details and hand over a completed ADU ready for family use, guests, or long-term rental.
Client Reviews
What Our Clients Say
"I recently had the pleasure of working with Ihor on a remodeling project for my home, and I couldn't be happier with the results. From start to finish, Ihor demonstrated exceptional professionalism, skill, and attention to detail. Every concern we raised was addressed promptly, and the final result exceeded our expectations. Our new ADU looks incredible and was delivered exactly on time."
Jenny Lian
2 weeks ago
About Us
Tukwila's Leading Custom ADU Builders
Maksymov Brownstone LLC brings 17+ years of hands-on construction experience to ADU work, and Tukwila is the kind of city where that experience saves money. A lot may look easy until the parking rule changes the layout, the half-mile transit exception affects the site plan, or permit review pulls in floodplain, wetland, drainage, or spring impacts.
Tukwila's current standards allow up to two ADUs per principal unit, cap detached ADUs at 1,000 square feet, and allow attached ADUs up to 40% of the principal unit or 1,000 square feet, whichever is greater. We are a licensed and bonded team that works through those realities early.
Where We Work
Serving Tukwila and Surrounding Areas
We serve homeowners across King County. Based in Seattle, with projects completed throughout the greater metro area.
Return on Investment
Why an ADU Is a Smart Investment in Tukwila
Rental Income
In Tukwila, a well-built ADU can generate $1,800–$3,200 per month. This consistent income helps offset the initial build cost, making your project financially sound over time.
Increase Property Value
Adding a permitted unit in Tukwila can raise your home's value by $150,000–$300,000. With skilled accessory dwelling unit builders, this becomes a strong long-term gain.
Flexible Living Space
Build extra space for aging parents, adult children or a private office in Tukwila. These custom homes on your property offer flexibility while keeping full ownership.
FAQ
Frequently Asked Questions About ADU Remodeling in Tukwila
Planning an ADU project in Tukwila comes with many questions about permits, timelines and budget. Below we cover the most common concerns homeowners have. Feel free to reach out for a personalized consultation and clear guidance specific to your Tukwila property.
How much does it cost to build an ADU?
The cost depends on size, structural work, utility tie-ins, site prep, and finish level. A garage or basement conversion can land lower than a new detached build because the shell already exists. In Tukwila, permit fees, plan review, and possible site studies can also move the number fast. We price from the real property, not online averages.
Do I need permits for an ADU in Tukwila?
Yes. ADU work goes through Tukwila's permit process, and depending on the property, the project may also require land use review or technical studies tied to wetlands, watercourses, flood areas, geologic hazards, or coal mine hazard areas. We handle that path from submittal through comments and inspections.
Can I build an ADU on my specific lot?
Maybe, but we do not guess from parcel photos. We check setbacks, lot coverage, parking, utility access, and whether the site is affected by floodplains, wetlands, drainage features, or springs. In Tukwila, those constraints can matter as much as lot size.
Why choose our company as your ADU builder?
Because ADU projects usually break at the handoff points. Design says one thing, permit review says another, and the field pays for the mismatch. We keep the process under one roof from feasibility through final delivery. That cuts miscommunication, protects the budget, and gives you a cleaner result.
Ready to Build Your ADU in Tukwila?
Start with a free consultation — no pressure, just honest answers about your project.
Committed to superior quality and results
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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