Home Addition
Kirkland, WA —
Built to Last
Need more space but love where you live? Space | Craft Homes builds home additions in Kirkland that feel like they were always part of your home — fully permitted, seamlessly integrated, and backed by our workmanship warranty.
Kirkland's Trusted Addition Contractor Since 2008
A home addition in Kirkland involves more than construction — it's a permitting challenge, a design decision, and a neighborhood consideration all at once. As a licensed renovation contractor serving Kirkland for 18+ years, we've navigated setback rules, HOA requirements, and the City of Kirkland's building department on dozens of projects. You get a team that already knows the terrain before the first consultation.
We match your home's existing architecture, materials, and rooflines so precisely that the addition looks like it was always there — not bolted on after the fact. That seamless result protects your home's aesthetic value and its resale price.
In-House Crew Only
One team, one contact. No subcontractor handoffs — full accountability from foundation to finish.
Full Permit Management
All Kirkland building permits, structural drawings, and city submissions handled end to end.
Seamless Integration
One team, one contact. No subcontractor handoffs — full accountability from foundation to finish.
Workmanship Warranty
Every addition we build is covered by our warranty — long after the final walkthrough.
Kirkland Homeowners
18+
Built on Experience
100%
Proven Project Success
99%
Regional Expertise
WA
Consistently High Client Satisfaction.
Why Kirkland Homeowners Choose Home Additions Over Moving
Kirkland's housing market is competitive. Homes move fast, inventory is tight, and the true cost of moving — agent fees, closing costs, the premium on your next purchase — adds up faster than most families expect. A well-planned home addition in Kirkland is often the smarter financial decision.
Stay rooted in your neighborhood. Schools, commute, neighbors — a home expansion keeps the life that already works intact.
Build equity, not transaction costs. Addition spend goes into your home's value — not commissions and stamp duties.
Your mortgage rate stays put. In today's rate environment, keeping your existing loan is a real financial advantage.
Design exactly what you need. No compromises on someone else's floor plan — you spec the space from scratch.
Home Additions in Kirkland - Every Type, Built Right
From a single bump-out to a full second story, we've designed and built it across Kirkland's neighborhoods. Here's what we specialize in as your local room addition contractor.
Custom Home Construction
We design and build custom homes tailored to your lifestyle and long-term needs. Our process blends thoughtful design with high-quality craftsmanship. From planning and permitting to final construction, we manage every step. We focus on functionality, durability, and architectural excellence. The result is a home that reflects your vision and stands the test of time.
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Full-Scale Home Renovations
Transform your entire home with comprehensive renovation solutions. We update layouts, improve flow, and enhance overall aesthetics. Our team manages design, planning, and construction seamlessly. We focus on quality workmanship and efficient project execution. The result is a modernized home that fits your lifestyle.
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Kitchen Remodeling
Transform your kitchen into a functional and stylish centerpiece of your home. We specialize in custom cabinetry, countertops, and optimized layouts. Our designs improve storage, workflow, and overall efficiency. Every detail is planned to enhance both daily use and entertaining. The result is a modern kitchen that balances beauty and practicality.
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Sauna Installation
Add a custom sauna for relaxation and in-home wellness. We integrate sauna spaces into bathrooms, additions, or new builds. Our designs focus on comfort, efficiency, and premium materials. Each installation is tailored to your space and lifestyle. The result is a spa-like feature that adds value and luxury.
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Home Additions & Expansions
Expand your living space with seamless home additions and extensions. We design spaces that match your home’s existing architecture. From extra rooms to second-story additions, we ensure structural integrity. Our focus is on functionality, flow, and cohesive design. The result is a natural extension that adds comfort and property value.
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Bathroom Remodeling
Upgrade your bathroom with modern, functional, and elegant design. We create customized layouts with premium fixtures and smart storage. Our team focuses on comfort, efficiency, and visual appeal. From small updates to full redesigns, every detail is handled with care. The result is a refined space built for everyday comfort and style.
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Kirkland ADU Contractor - The Addition That Pays for Itself
As a licensed ADU contractor in Kirkland, we design and build Accessory Dwelling Units that maximize both livability and long-term ROI. With proximity to Amazon, Microsoft, and the Eastside tech corridor, rental demand for quality ADUs in Kirkland is consistently strong - and Kirkland's zoning now actively supports ADU construction.
Every ADU we build is code-compliant, fully permitted, and constructed to the same standard as the main home. We manage site assessment, design, engineering, city permits, and construction - you're involved in the decisions, not the paperwork.
Attached ADUs
Share a wall or structure with your main home. Often built above garages or as side additions — lower site prep cost, faster permit path.
Detached ADUs (DADUs)
Fully independent backyard cottages with their own entrance, systems, and identity. Maximum privacy — highest rental income potential.
How We Work
Our Home Addition Process in Kirkland
Every home addition we build follows the same structured five-step process - so you always know where your project stands, from first consultation to final walkthrough.
Free Consultation
We visit your Kirkland home, assess feasibility, discuss your goals - no pressure, no fee.
Design & Scope
Detailed plans aligned with Kirkland zoning, your vision, and a fixed written price before work begins.
Kirkland Permits
We submit all drawings to City of Kirkland Development Services and manage full approval process.
Construction
Our in-house crew builds with regular updates and minimal disruption to your daily life at home.
Final Walkthrough
We don't close the project until every detail is right and you've signed off completely.
What a Complete Basement Remodel Includes
A lot of contractors quote basement finishing as just framing and drywall. That's not how we approach it. A complete basement remodel addresses every system in the space — not just the surfaces.
Every Space | Craft basement remodel is fully permitted through the City of Kirkland. We don't cut corners on permits — they protect your investment and your home's resale value.
Moisture assessment & waterproofing — vapor barriers, drainage review, and any remediation before framing begins.
Framing & insulation — properly insulated walls and ceiling for Pacific Northwest climate performance.
Egress window installation — required by Kirkland code for any bedroom or sleeping area below grade.
Electrical & lighting design — dedicated circuits, recessed lighting, outlets, and any specialty electrical (home theater, gym, bar).
HVAC extension — heating and ventilation extended or installed to code for the finished space.
Plumbing rough-in — for bathrooms, wet bars, or kitchenettes where applicable.
Drywall, flooring & finishes — moisture-resistant materials selected for below-grade conditions.
Permit & inspection management — all city inspections coordinated and passed before final sign-off.
Common Questions
Common Questions for Homeowners
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Yes — virtually all home additions in Kirkland require a building permit from the City of Kirkland Development Services, including structural drawings, site plans, and in some cases SEPA review. We manage the entire permitting process as your addition contractor - all submissions, responses, and city coordination are handled on your behalf.
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It depends on scope. A room addition typically takes 3–5 months from permit approval to completion. A second-story addition or ADU can take 6–9 months. Kirkland's permit review currently runs 6–12 weeks depending on project type. We give you a realistic timeline during the consultation - not an optimistic one that gets revised midway through construction.
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Matching the existing home is one of our top priorities on every Kirkland home addition. We source matching materials, align rooflines, and coordinate interior finishes so the addition flows naturally from the original structure. We've done this on Kirkland homes from the 1950s through recent construction - it's a detail that directly protects your home's resale value.
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In most cases, yes. We sequence our work to minimize disruption and communicate clearly about which areas will be affected and when. For additions involving structural tie-ins or HVAC/electrical connections to existing systems, there may be brief periods where specific areas are temporarily inaccessible - days, not weeks. We walk through all of this in detail before work begins.
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Kirkland's real estate market rewards square footage and functional living space. Well-executed home additions — primary suites, ADUs, family room expansions - typically recoup 60–85% of their cost at sale, and in some cases more given Kirkland's tight inventory. ADUs in particular have strong ROI given Eastside rental demand. We can walk you through the value case for your specific addition type during your free consultation.
Where We Work
Our Service Areas
Kirkland's housing stock is varied - mid-century ranches near Juanita, 1980s colonials in Kingsgate, newer construction near Totem Lake, and waterfront properties along Lake Washington. Each neighborhood has its own character, its own setback rules, and its own HOA constraints that affect what house additions are feasible and how they need to be designed.
Ready to Finish Your Kirkland Basement?
Schedule a free consultation and we'll visit your home, assess the space, and give you an honest picture of what's possible — scope, timeline, and all.