Double the square footage of your home
Get 3 layout options priced to fit your budget
Our expert will be at your home within 24 hours
Design + Permits + Construction — All in One
No juggling contractors. We handle it all.
53+ Finished Basements in Greater Seattle
Proven results you can trust.
What Our Clients Say
Average rating ★ 5.0 from 48 verified reviews.
We Design, Permit, and Build Your Basement from Start to Finish
-
![]()
Home Office
A quiet, dedicated workspace to stay productive without leaving home.
-
![]()
Sauna
Your own relaxation retreat just steps away from your bedroom.
-
![]()
Full Airbnb‑Ready Unit
Complete living spaces with everything needed for independent living.
-
![]()
Private Rental Unit
Perfect for generating extra income or hosting long‑term guests in comfort and privacy.
-
![]()
Family Room
A dedicated level where visiting relatives can enjoy their own space and amenities.
-
![]()
Spacious Kids’ Playroom
Keeps toys and games downstairs while freeing up your main living area upstairs.
-
![]()
Bright Private Unit for Family
A spacious, light-filled unit designed for comfort and privacy, perfect for hosting visiting family members.
Up to 40 Years’ Residential Experience
A poorly done basement remodel can lead to structural issues, moisture problems, and costly repairs. That’s why our team handles every step — design, permits, pre‑construction planning, and expert building — all under one roof.
Design
We create multiple layout options, choose the best solution with you, and order all materials in advance.
Pre‑Construction Planning
We build the project schedule around your lifestyle to minimize disruption.
Permits
Our architect and structural engineer work together to ensure your project meets all codes and requirements — and we handle all city inspector communications and approval
Construction
Our construction experts and project managers keep you updated 24/7, with an online project schedule. We parallel work processes to save you time.
Warranty
We perform follow‑up walkthroughs at 1 month and 1 year. You get a 1‑year workmanship warranty plus $2M liability coverage.
All the Experts You Need, In‑House
What Can We Do to Transform Your Basement?
With 50+ possible upgrade options, we tailor every project to your goals and your home’s unique structure — while keeping up with the latest design trends and smart solutions.
You can share your vision with us, or trust our experts to recommend the plan that works best for your space.
-
-
-
-
-
Item
-
-
Why Work with AG Construction & Remodeling?
Why Work with AG Construction & Remodeling?
Proven Expertise – Since 2009, 53+ custom projects and 100,579 sq ft remodeled in King County, with specialists holding 40+ years of experience.
Schedule Your Free In‑Home Basement Remodeling Consultation
Get a professional on‑site assessment within 24 hours — absolutely free.
All‑In‑House Team
Architecture, structural engineering, and permit administration handled under one roof for a smooth, stress‑free process.
Trusted & Guaranteed
Top‑Rated, 48+ five‑star reviews, $2M insurance coverage, and a 1‑year workmanship warranty.
Ilia
Owner AG Construction & Remodeling
Since 2009, our approach has been to treat every basement remodel as an investment in your home’s value and livability — not just a cosmetic upgrade. From lowering floors and adding separate entrances to waterproofing and building full ADU units, we handle every stage with precision, including all permits, inspections, and city coordination, so you can enjoy the results stress‑free.
-
Licensed Professionals
Architects, engineers, electricians, plumbers, and other certified experts.
-
Proven Experience
From 1920s home restorations to 3,000+ sq ft remodels and major storm repairs
-
Skilled, Synchronized Crews
Multiple teams for each trade, working efficiently and on schedule.
Transparent Estimates — No Surprises
We finalize design and architectural plans before construction, so you know the full cost upfront.
Included:
Expert analysis, multiple layouts & 3D visuals
Architectural plans & structural engineer review
Permits & coordination with the city
Materials, demolition, construction & landscaping
1‑month & 1‑year service check‑ins
1‑year warranty & $2M insurance
Costs may vary only 10–15% during work
Returning clients get a labor discount
Construction‑only option available
See how we transformed our clients’ basements
Garage Conversion
Garage conversions are a great way to add valuable living space to your home without the expense of a full-fledged addition. Turning your garage into a functional room, such as a home office, guest suite, or personal gym, allows you to tailor your space to your needs and lifestyle.
New Home
Constructions
Garage conversions are a great way to add valuable living space to your home without the expense of a full-fledged addition. Turning your garage into a functional room, such as a home office, guest suite, or personal gym, allows you to tailor your space to your needs and lifestyle.
Garage Conversion
Garage conversions are a great way to add valuable living space to your home without the expense of a full-fledged addition. Turning your garage into a functional room, such as a home office, guest suite, or personal gym, allows you to tailor your space to your needs and lifestyle.
Garage Conversion
Garage conversions are a great way to add valuable living space to your home without the expense of a full-fledged addition. Turning your garage into a functional room, such as a home office, guest suite, or personal gym, allows you to tailor your space to your needs and lifestyle.
Basement Remodeling
Garage conversions are a great way to add valuable living space to your home without the expense of a full-fledged addition. Turning your garage into a functional room, such as a home office, guest suite, or personal gym, allows you to tailor your space to your needs and lifestyle.
Schedule Your Free In‑Home Basement Remodeling Consultation
Get a professional on‑site assessment within 24 hours — absolutely free.
AG Construction and Remodeling is a premier home renovation company based in Bellevue, Washington. We specialize in transforming homes into beautiful, functional spaces. With a commitment to quality craftsmanship and exceptional customer service, we offer a wide range of services, including basement remodeling, kitchen and bath renovations, garage conversions, and new home construction.
Our experienced team handles every aspect of the project, from initial design and permitting to final touches, ensuring a seamless and stress-free experience for our clients. At AG Construction and Remodeling, we are dedicated to making your home renovation dreams a reality.
ABOUT AG CONSTRUCTION AND REMODELING
Our Locations
PROUD TO SERVE THE AREAS WHERE WE LIVE AND WORK
We are serving Bellevue, Kirkland, Seattle, Redmond, Renton, Bothell, and all of King County with premium-level basement remodeling, new home construction, kitchen and bath remodeling, garage conversion, and more.