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

Avatar for Regal Construction, Inc.
Regal Construction, Inc.
4.4(
53
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

In business since 1994

Warranties offered

Credit card accepted

"There is simply no one else that I would have put my trust in to create a 600-plus SF addition with complete remodel of the main floor of my home than Pete. He is laser focused on every detail and has that ability to see your home through a lens that you just can not. He brings sound ideas, creativity and functional suggestions to every element of the project and then completes those tasks with care and precision. His crews know what Pete expects and what homeowners deserve and they match his level of professionalism and detail."
Our work
Our work
Our work
Our work
Our work

+100

Response time6 hrs
Response rate92%
4 neighbors recently requested a quote
Avatar for MNL Construction
MNL Construction
4.5(
109
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Leo and his crew did a fantastic job with our tree trimming of 3 trees. Showed up on time, finished earlier than expected and did great work! Highly recommended and will use them again in the future."
Response time1 day
7 neighbors recently requested a quote
Recommended by95%of homeowners
Odyssey Construction Group LLC
4.9(
34
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"Jason and his team are the best contractors I have worked with. I have lived in my home for 25 years and have remodeled and worked with other contractors so I have a pretty good foundation of how to plan my project, my vision and what I expect. Jason was incredibly helpful in the beginning when I showed him my plans and made suggestions that I would never have thought of. He actually picked out fixtures and the materials with me! His team is hardworking, professional and kind. I will be working with Jason in the future on additional updates and wish I found him before now because I had to ask him to re-do some of the work that was done by others. I highly recommend Odyssey Construction Group LLC!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+66

Response time2 days
Response rate100%
Recommended by90%of homeowners
Prospect 30 Eight Construction, Inc.
4.5(
23
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

In business since 2005

Free estimates

Customers say: Quick response

"We hired Chris at Prospect 30 Eight to build an addition on our house for my aging mom. It was a scary commitment for us, and Chris made it manageable. He handled every step of the process, from design and permitting, to hiring and managing the flow of workers, and all the steps of the building process, right down to the small details. Chris is honest, trustworthy, and a hands-on guy -- he will drop everything and show up if something is wrong. He has a calm demeanor and will figure out a solution to any problems that come up. I am so grateful we found him for this project. The end result is exactly what we wanted and better than we could have imagined. It has been a pleasure spending time with Chris. Highest recommendations!"
Barrett Remodel
Barrett Remodel
Barrett Remodel
Barrett Remodel
Barrett Remodel

+88

Response time3 days
12 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Cransten Remodeling
Cransten Remodeling
4.5(
207
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Wow! I had the privilege of Bailey helping me with a project to build a pantry and I can’t express how impressed I am with his dedication and craftsmanship. He worked SO hard, all day long, and finished the entire thing in record time. All while having innovated ideas to make the project extremely functional and professional. His craftsmanship was outstanding and his work ethic was the cherry on top. I hope to work with him again soon."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+18

Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for CH Construction
CH Construction
5.0(
12
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"I hired chris with CH remodeling to put a kitchenette in my basement, redo all my floors and my master bathroom he communicated with me the whole way through the project finished all on time great job on all"
Kitchen
Kitchen
Kitchen
Kitchen
Tub To Shower Remodel

+6

Response time4 hrs
Response rate91%
1 neighbors recently requested a quote
Avatar for Denver Construction
Denver Construction
4.6(
18
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Hired Denver Construction to renovate the main level of my house including the kitchen and the bathroom upstairs and they did such an awesome job. Trusted them in my home while I had to work and came back to a job well done on multiple occasions. Highly recommend this company. Will be hiring again sometime in the future. Thanks DC!"
Gallery
Gallery
Recommended by7%of homeowners
Avatar for Qualden Construction, Inc.
Qualden Construction, Inc.
4.5(
11
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Qualden Construction completely remodeled two buildings on my property. They had excellent ideas for design and making the most use of the space. Their team provided quality work on time, even when the city had permitting delays. Will was a pleasure to work with and very knowledgeable. Qualden was a great company to work with."
Wet Bar
Wet Bar
Wet Bar
Wet Bar
Wet Bar

+61

Recommended by83%of homeowners
Avatar for Verified Builders
Verified Builders
5.0(
10
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Warranties offered

"They build my basement from scratch. Everything was great efficient, fast and professional mean my wife were extremely happy from the final result. Will definitely work again in the future and recommend to everyone else"
Kitchen Remodel
My Work
My Work
My Work
My Work

+11

Response time12 hrs
Response rate99%
4 neighbors recently requested a quote
Avatar for Denver Dream Builders
Denver Dream Builders
5.0(
5
)
Addition to Existing Structure - Build

Serving Denver, CO and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"One word: Amazing! I have used DDB for multiple projects including design AND build of full basement, concrete patio/fence/main house access, master ensuite among many other small projects. DDB was on time, on budget and was amazing to communicate with along the way! Highly recommend."
Denver Residential
Cherry Creek Denver Kitchen and Bathroom
Denver Residential
Denver Park Hill Kitchen
Cherry Creek Denver Kitchen and Bathroom

+28

Response time1 day
Response rate100%
3 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in Denver, CO

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 Denver, CO 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.