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Top-Rated Addition to existing structure builders in Sunnyside - Updated Nov 2026

Avatar for DH West Coast Construction LLC
DH West Coast Construction LLC
4.8(
64
)
Addition to Existing Structure - Build

Serving Sunnyside, WA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"This was the second major remodel we had Darrell and crew do for us. We downsized and purchased a house that had been a rental for 6 years. We needed to make it "ours" so we had the flooring removed (vinyl and carpet), removed the existing island and replaced with a custom one that the guys built, new quartz countertops, laminate flooring, new front door, new slider, whole house painted inside and out including staining our fiberglass garage door to give it a "wood" look. We were very happy with the whole project. Darrell and his crew are "good people". Very courteous, punctual and finished the job sooner than we expected which was very much appreciated. We would definitely hire them again."
Bathroom remodel
Bathroom remodel
Trex Deck
Kitchen Remodel
Kitchen Remodel

+5

Response time11 hrs
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for B&E Construction, LLC
B&E Construction, LLC
4.7(
48
)
Addition to Existing Structure - Build

Serving Sunnyside, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Warranties offered

"Emrah was amazing to work with from start to finish. His price, including labor, was a lot less than two other estimates I got. I would highly recommend B & E Construction to anyone wanting to paint the exterior of their house."
Response time5 hrs
Response rate93%
37 neighbors recently requested a quote
Avatar for Custom Valley Construction
Custom Valley Construction
5.0(
3
)
Addition to Existing Structure - Build

Serving Sunnyside, WA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"John did a complete remodel of our master bathroom and added on a closet for us. His experience showed through the whole remodel! He had great design ideas and helped walk us through all our decisions. We also appreciated his attention to details, All while finishing the big project in a timely mater. 10/10 recommend for any project!"
Response time1 day
13 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for JEHM General Construction LLC
JEHM General Construction LLC
5.0(
2
)
Addition to Existing Structure - Build

Serving Sunnyside, WA and surrounding areas

Approved

Free estimates

Small jobs welcome

"From the first encounterit was apparent that Javier was an accomplished contractor. He posed questions and offered counsel on what could make working with him highly successful. Posing questions, offering his advice, and calling out oversights from the original construction in the 70s. While he and his subs were working it became clear he was going to work with us as we modified the original scope of the work. We’re looking forward to the next to-do on our list."
1 neighbors recently requested a quote
Avatar for Tiny Living Golden Concept LLC
Tiny Living Golden Concept LLC
4.9(
11
)
Addition to Existing Structure - Build

Serving Sunnyside, WA and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Pretty good, but I have noticed a lot of soft spots in the flooring and felt that those spots should have been fixed before the flooring was installed. I don’t know what is going to happen over the next few months or years, are these spots going to break thru?"
Flooring Sales and Installation Project
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+12

Recommended by100%of homeowners
New Dawn Construction Services
4.8(
6
)
Addition to Existing Structure - Build

Serving Sunnyside, WA and surrounding areas

"Ken does excellent work every time. We worked together on design elements and materials selection and he often would find sources for supplies that were cheaper than the local Home Depot. Ken has a good eye for possibilities on design or practicality during the remodel and I often took his suggestions on how to make a good plan or element even better. His work is consistently of a very high caliber at a very competitive price."
Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in Sunnyside, WA

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Sunnyside, WA homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.