⭐ 5-Star Rated
✔ BBB A+
✔ Licensed & Insured
✔ Est. 2014
MORE ROOM.
MORE HOME.
MORE VALUE.
Custom home additions that expand your living space and increase your property value — designed, permitted, and built to last by Equinox Builders.
BBB A+ Rated
5-Star Google & Yelp
500+ Projects
Price Never Goes Up
Get Your Addition Estimate Today
Get Your Free
Estimate
Estimate
RESPONSE WITHIN 24 HOURS · NO OBLIGATION
⭐ 55+ Five-Star Reviews · BBB A+
100% free, zero obligation
Price never goes up — guaranteed
Licensed, insured & BBB A+ rated
Professional clean after every job
🔒 Free · No Obligation · We Never Share Your Info
Licensed & Insured
BBB A+ Accredited
5-Star Google & Yelp
Best of 2026 BusinessRate
Home Addition Experts
Pro Clean After Every Job
Price Never Goes Up
Family Owned · Redmond WA
Licensed & Insured
BBB A+ Accredited
5-Star Google & Yelp
Best of 2026 BusinessRate
Home Addition Experts
Pro Clean After Every Job
Price Never Goes Up
Family Owned · Redmond WA
500+
Projects Done
5.0★
Google Rating
Full
Permits Handled
100%
Fixed-Price
🏆
Best of 2026
BusinessRate Award
⭐
5-Star Rated
Google · Yelp · BBB
🛡️
BBB A+ Accredited
Better Business Bureau
🏅
Trex® Pro Certified
Official Deck Contractor
📅
10+ Years
Serving Greater Seattle
500+
Happy Families
Home Addition Experts
YOUR HOME CAN
GROW WITH YOUR FAMILY.
Moving is expensive and stressful. A home addition is often the smarter, more affordable choice — you keep the neighborhood you love, gain the space you need, and add real value to your property. Equinox Builders designs and builds additions that feel like they were always part of your home.
LY
Liroy Yarimi
Founder & Owner · Redmond, WA
💰
Price Never Goes Up
What we quote is what you pay.
✨
We Leave It Spotless
Professional cleaners after every job.
⏰
On Time, Every Time
We respect your schedule, always.
🏆
Quality That Lasts
Premium materials, expert installation.
What We Build
ADDITION SERVICES
Every addition is custom — designed to match your home's architecture seamlessly.
Room Additions
Extra bedroom, home office, playroom — custom-built and seamlessly connected to your existing structure.
Get Estimate →
Family Room Additions
Expand your main living area with a spacious family room addition, fully finished and move-in ready.
Get Estimate →
Master Suite Additions
Add a private master bedroom with ensuite bathroom — a sanctuary addition that adds serious value.
Get Estimate →
Sunroom & Bonus Room
Light-filled sunrooms and flexible bonus rooms — perfect for enjoying the Pacific Northwest seasons.
Get Estimate →
Garage Addition
Add a new attached or detached garage — built to match your home's style and meet city code.
Get Estimate →
In-Law Suite
A self-contained addition for aging parents or guests — private entrance, kitchenette, full bath.
Get Estimate →
10+
Years of Trust
Why Build an Addition
STAY PUT.
LEVEL UP.
A well-built home addition is one of the highest-ROI investments a Bellevue homeowner can make. Here's what you get when you build with Equinox.
🏠
Stay in the Neighborhood You Love
No moving, no disruption — just more space in the home and location you already love.
📈
Significant Property Value Increase
Well-built additions consistently return 60–80% of construction costs in home value.
💰
Your Quote = Your Final Price
No hidden fees, no surprises. What we quote is what you pay.
🏆
Seamlessly Matches Your Home
We match your existing architecture, materials, and finishes — it looks like it was always there.
📋
Permits & Design Fully Handled
We manage all city permits, inspections, and design documentation from start to finish.
How It Works
OUR ADDITION
PROCESS
01
📞Free Consultation
We visit your home, listen to your vision, and assess the best approach for your addition.
02
📐Design & Permits
We create detailed plans and manage all permit applications with the city — fully handled.
03
🔨Expert Construction
Our crew builds your addition on time, matching your home's existing style and quality.
04
✨Final Walkthrough
City inspection passed, professional clean done — your new space is ready to enjoy.
Real Reviews
WHAT HOMEOWNERS
SAY ABOUT US
5.0
★★★★★55+ Google Reviews
K
Kevin Schroedter Lopez
Local Guide · 3 weeks ago
G
"My wife and I were very impressed from start to finish. Liroy and Omer made us feel like every detail mattered. Dima and Yuri were the most skilled tradesmen we've ever had — I would call them artisans. We will definitely be asking Equinox to help with future projects."
Kitchen & Bathroom Remodeling · Bellevue
A
Anirban Basu
19 weeks ago
G
"They were transparent about pricing and made sure the job was done well. Would not hesitate to hire again."
Home Renovations · Redmond
J
Jeannie Nguyen
14 weeks ago
G
"Liroy was very communicative and helpful. The addition turned out great and we are very happy with the results."
Home Addition · Bellevue
M
Mandy Geddes
19 weeks ago
G
"Equinox was easy to work with. They listened, communicated, and were quick to respond. We had a great experience."
Room Addition · Kirkland
E
Emily Campbell
Local Guide · 19 weeks ago
G
"Omer & Liroy are wonderful, kind and honest people. Home renovation is important to do with people you trust. They were gracious and understanding throughout."
Home Renovation
J
Jensen Ward
18 hours ago
G
"They showed up at all appointed times, did exemplary work and used quality materials. Highly recommended contractor."
Home Addition · Sammamish
Our Work
RECENT PROJECTS
Addition · Bellevue
Room Addition · Redmond
Addition · Sammamish
In-Law Suite · Kirkland
Master Suite · Bellevue
Sunroom · Kirkland
Family Room · Bellevue
Service Areas
WE COME TO YOU.
From Redmond to Tacoma — Equinox Builders serves the greater Seattle area within 90 minutes.
📍
Our Office
8201 164th Ave NE, Redmond, WA 98005
⚡ Eastside — Our Backyard
BellevueRedmondKirklandSammamishIssaquahMercer IslandNewcastleMedinaNorth BendSnoqualmieDuvall
🌊 Seattle & North
SeattleWoodinvilleBothellKenmoreShorelineEdmondsLynnwoodEverettMill CreekSnohomish
🏔️ South King County
RentonKentAuburnFederal WayBurienMaple ValleyCovington
🌲 Pierce & Beyond
TacomaPuyallupGig HarborLakewoodBonney Lake
Common Questions
HOME ADDITION
FAQ
How long does a home addition take? ▾
Most home additions take 3–6 months from permit approval to completion, depending on scope. We give you a precise timeline before we start — and we stick to it.
How much does a home addition cost in Bellevue? ▾
Additions typically range from $80,000–$300,000+ depending on size and complexity. We provide detailed fixed-price quotes with no hidden costs.
Do you handle all permits for home additions? ▾
Yes — completely. We handle all permit applications, structural engineering, city submissions, and inspections. You don't worry about anything.
Can I live in my home during the addition? ▾
Usually yes. We plan work carefully to minimize disruption. For major additions, we'll discuss the best approach together during your consultation.
Will the addition match my existing home? ▾
Absolutely. We match your existing architecture, rooflines, siding, windows, and interior finishes — the addition will look like it was always part of your home.
How do I get started? ▾
Fill out our free estimate form or call 206-971-1133. We'll schedule a free in-home consultation to assess your space and discuss your vision.
Start Here
GET YOUR FREE
ADDITION ESTIMATE
Fill out the form and we'll be in touch within 24 hours. No pressure — just honest advice from a local family business.
100% free, zero obligation
Response within 24 hours
Licensed & insured contractor
Fixed price — no surprises ever
Permits fully handled by us
Prefer to call?
📞 206-971-1133No Obligation · 100% Free
Request Your
Free Addition Estimate
Free Addition Estimate
We respond within 24 hours
⭐ 55+ Five-Star Reviews · BBB A+
★★★★★
55+ Verified Reviews
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PREFER TO TALK? WE LOVE THAT.
Home Addition Bellevue WA · Mon–Sat · 8am–6pm