Turn Your Backyard Into Valuable Space
We simplify DADU construction, handling everything from permits to the final build in King & Snohomish County
AddSpace
Don't Struggle To Build Extra Income Space
We provide a Free Feasibility Check for your property.
Eliminate the guesswork with a straightforward process designed for your success.
01
Review
We evaluate your property and discuss your goals to confirm your DADU potential.
02
Select
Choose from our pre-designed or custom DADU models that best fit your property and vision.
03
Permit
Our team handles all city and county permitting so you don’t have to.
04
Build
We bring your backyard home to life with quality craftsmanship, on time and on budget.
Our Models
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Clearwood – AS680
1,120 sq. ft. | 2 bed | 2 bath | 1 floor
The Cedar Cottage – AS570
476 sq. ft. | 1 bed | 1 bath | 1 floor
Cedar Vale – AS630
1,022 sq. ft. | 2 bed | 2 bath | 2 floors
Timber Falls – AS590
831 sq. ft. | 1 bed | 2 bath | 2 floors
Echo Ridge – AS610
1,022 sq. ft. | 2 bed | 2 bath | 1 floor
The Schooner – AS650
1,022 sq. ft. | 2 bed | 2 bath | 2 floors
Rain Shadow – AS600
750 sq. ft. | 2 bed | 1 bath | 1 floor
Whisper Glen – AS620
921 sq. ft. | 2 bed | 2 bath | 2 floors
Willow Point – AS580
624 sq. ft. | 1 bed | 1 bath | 1 floor
Stone Hollow – AS640
1,022 sq. ft. | 2 bed | 2 bath | 1 floor
Meadow Ridge – AS560
756 sq. ft. | 1 bed | 1 bath | 1 floor
Eagle Run – AS660
750 sq. ft. | 2 bed | 2 bath | 2 floors
Hidden Fern – AS540
583 sq. ft. | 1 bed | 1 bath | 1 floor
Amber Trail – AS510
432 sq. ft. | 1 bed | 1 bath | 1 floor
Summit Grove – AS520
460 sq. ft. | 1 bed | 1 bath | 1 floor
Aspen Ridge – AS690
658 sq. ft. | 2 bed | 1 bath | 1 floor
Cedar Bluff – AS480
288 sq. ft. | Studio | 1 bath | 1 floor
Timber Bay – AS500
506 sq. ft. | 1 bed | 1 bath | 1 floor
Silver Pine – AS400
288 sq. ft. | Studio | 1 bath | 1 floor
Enjoy Extra Income and Peace of Mind
We understand how confusing it can be to navigate DADU regulations and contractors. Our mission is to simplify DADU construction, empowering you to realize your property's full potential.
Meet Our Satisfied Customers
Discover how our DADU models are transforming properties and lives. Read the testimonials below to see how Addspace DADU has helped clients successfully add space, value, and peace of mind to their homes.
Eder Souto
"Excellent products, excellent service, and excellent attention and helpfulness!."
Roberto Miki
"I have had a great experience with this company...Very highly recommend... "
Jonathan W.
"…very satisfied with the purchase. Fast, professional, and high-quality service."
Emily K.
"The ADU turned out great...the craftsmanship is top-notch...Worth every penny."
Ryan P.
"The crew was careful, respectful, and detail-oriented...ADU design worked beautifully."
Jason R.
"It’s rare to find a company that communicates this well...Clear, honest, and dependable."
Sarah M.
"David and his team made it simple from day one...Surprisingly easy process."