With over a decade of experience, we design and build ADUs and custom home additions that expand your living space, add value, and blend seamlessly with your home’s style.
Kirkland Home Addition Contractor & ADU Builder
Professional Builder
- Licensed & Insured Local Contractor
- Expertise in Permits & Zoning
- Fixtures, Materials & Labor Included
- Custom Home Addition & ADU, DADU Solutions
- Quality Materials & Sustainable Practices
- Reliable, Experienced Craftsmanship
- Full Design & Project Planning
5 Star Rated Kirkland Construction Company
14
Years of
Experience
+150
Completed
Projects
FREE QUOTE FOR YOUR ADDITION OR ADU
Professional Addition & ADU Contractor
Seattle’s Eastside, WA
Our Comprehensive Addition & ADU Services Include
ADU Builder in Kirkland: With over a decade serving Kirkland homeowners, we bring proven craftsmanship to every Accessory Dwelling Unit project. From solid structural work to precise finishes, our team builds attached and detached ADUs designed for durability, comfort, and lasting value.
Home Additions in Kirkland: We specialize in high-quality home additions that meet practical needs while upholding our standards for fine construction. Whether you need extra bedrooms, a functional home office, or a dedicated in-law suite, our local knowledge and hands-on approach ensure a result you’ll appreciate for years.
- Garage Conversions
- Sunrooms
- In-law Suites
- Guest Suites
- Home Offices
- Basement Conversions
- Second Story Additions
- Kitchen Extensions
- Bathroom Additions
- Detached ADUs
- Attached ADUs
- Energy-Efficient Upgrades
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Complimentary Estimate and Expert Guidance from experienced Professionals.
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Our ADU and Addition Services
Attached ADUs
Connected to the main house for multi-gen living or rental income. Designed for a seamless tie-in and code compliance.
- Directly attached to home
- Shared Wall Structures
- Integrated Utilities
- Space-Efficient Layouts
Detached ADUs
Stand-alone backyard cottages for guests or rental. Built for privacy, durability, and local zoning compliance.
- Stand-Alone Structures
- Private Entrances
- Independent Utilities
- Flexible Use Options
Home Additions
Increase square footage with custom additions that match your home’s style and boost long-term value.
- New Bedrooms
- Home Offices
- In-Law Suites
- Seamless Integration
Home Extensions
Targeted expansions: kitchen, bathrooms, living, or sunroom planned for comfort, light, and energy efficiency.
- Enlarged Kitchens
- Spacious Living Rooms
- Added Sunrooms
- Seamless Integration
Why Choose BLC Remodeling LLC for Your Kirkland Home Additions and ADUs?
Licensed and Insured Kirkland Contractor
We are fully licensed and insured to complete home additions and ADUs in Kirkland, ensuring all work meets Washington State safety and building regulations. Our commitment to structural integrity and quality workmanship is evident in every project.Navigating Kirkland’s Building and Design Guidelines
From waterfront properties on Lake Washington to compact lots near downtown, we understand Kirkland’s setback rules, height restrictions, and neighborhood design requirements. This knowledge helps streamline planning and construction.Designs That Match Your Home’s Character
We have built second-story additions, guest suites, and kitchen expansions that match Kirkland’s mix of contemporary and craftsman-style homes. Each project is tailored for both aesthetics and usability.Quality Materials and Skilled Craftsmanship
Our construction process includes strong framing, precise finish work, and the use of durable materials like composite decking, fiber-cement siding, and triple-pane windows for long-term performance.More Than a Decade Building in Kirkland
Since 2011, we have worked in Kirkland neighborhoods such as Houghton, Juanita, and Finn Hill, delivering spaces that meet modern needs while respecting local architecture.
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Achieve Your Dream Home With Our Process
Simplified Kirkland Home Extension Process
1.
Schedule a Consultation
2.
In-Home Assessment
3.
Receive a Detailed Quote
4.
Schedule and Begin Work
Start Your Home Transformation Today
Schedule Your Kirkland ADU or Addition Estimate
Call us anytime, we strive to answer all inquiries within 24 hours.
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Frequently asked questions
Adding an addition to your existing home is generally more cost-effective than building a new house. Home additions make use of existing infrastructure and utilities, which can significantly reduce costs. However, the total expense will depend on the size and complexity of the addition, as well as the materials used.
The cheapest type of home addition is typically a single-room extension, such as a sunroom or a small bedroom. These additions require less structural work and fewer materials compared to multi-room additions or second-story expansions. Costs can be further minimized by choosing cost-effective materials and designs.
The timeline for home additions varies depending on the project’s scope and complexity. On average, a small addition like a single room can take 3-4 months, while larger projects, such as adding a second story, can take 6-9 months. Detailed planning and efficient project management are crucial to staying on schedule.
What are the requirements for building an ADU in Kirkland, WA?
A: In Kirkland, ADUs must comply with these requirements:
- Size: Maximum of 1,200 sq. ft. or 40% of the principal dwelling’s floor area.
- Parking: One off-street parking space required.
- Compliance: Must meet all building and zoning codes.
For more information, refer to the Kirkland City Government’s ADU Guidelines.
Service Areas
Other Service Areas
Don’t see your neighborhood listed? No problem! We are eager to hear about your project. Call us today, and let’s discuss how we can help. Proudly serving homeowners throughout Eastside and Greater Seattle!