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info@buildhighline.com

OUR STORY

Mile High Designs was formed in 2005 as a small two man subcontracting crew. With a lot of hard work, we’ve grown into a highly rated family business with a team of valued employees and trade partners ready to transform homes throughout the Denver metro area and mountain communities along Hwy 285 and I-70. In 2019, after a few cases of mistaken identity and a lot of consideration, we transitioned to doing business as Highline: Design & Build. There are so many ‘Mile High’ service companies out there and we don’t want to be mistaken for other less than stellar competitors. But don’t worry, Highline is still delivering the same award winning service that made Mile High Designs thrive. 

Check out what we’re building in your neighborhood.

WHY CHOOSE US?

PROFESSIONAL

Our team strives to be respectful and courteous.

THOROUGH

We work from beginning to end minding the details that make a project a success. By doing so, your project will be well built, custom to your home, and of course beautiful.

RELIABLE

We show up when we say we will, and we communicate if there are any changes.

Thoughtful design. Thoughtful customer service.

Contact us today and let us maximize your budget.

Z M
Z M
2021-10-01
Ray, Ben, and the entire team at Mile High were extremely professional, easy to work with, and did extremely high quality work! We are extremely happy with our new deck and deck cover. I would highly recommend them!
Ashley Lercara
Ashley Lercara
2020-10-14
Great company and great service! I moved into a new house and the deck desperately needed to be replaced. I contacted Mile High Designs and Ray was very flexible and got me everything I needed for the project. Everyone was professional and made sure everything was done in a timely manner. A special shoutout to Christopher who patiently dealt with my constant questions every step of the way. My deck turned out amazing and I am so happy!
Steve Knapp
Steve Knapp
2020-07-02
It has been about a year since our project was finished and we are still thrilled with it! Ray was great to work with, offered many ideas and communicated well through the entire process. His crew was knowledgeable, hard working, and very efficient. They tore down our old wood deck and built a new composite one, adding a gabled deck cover and railing. We love the solid wood beams, cedar plank ceiling, Trex transcend decking (which has not scratched), and low voltage lighting that gives everything a great look after dark. It is our favorite place to go and has added so much value to our home. We highly recommend this company. Thank you Ray and your team for doing such an amazing job!
Riley Walker
Riley Walker
2019-01-15
Ray and his team built a deck for us and it turned out great. The project was on time, on budget, and hassle-free. We liked their work so much, we hired them for two more projects.
David Cates
David Cates
2018-08-20
Quality workmanship at a fair price.
Dena Singh
Dena Singh
2017-07-08
We couldn't be more pleased with EVERYTHING about this company. We got lucky meeting Ray at the Home and Garden show early this spring. We instantly felt Ray's professionalism and honesty. We went into a big deck project with the company, fearing all the worst as all we ever heard were nightmares with regard to deck contractors and the fact that with the high demand they would overbook themselves and under service their clients. From the moment they arrived, we felt comfortable and confident in each and every person who works for the company. The job was done on time and exactly on budget, even though that meant that the team had to work during some really bad weather at times (snow, cold, and rain). The result is even better! Thank you to the entire team at Mile High Designs! You get our highest recommendation!
Dave Cates
Dave Cates
2016-10-30
This company is the best. They have a lot of professional knowledge and get it right the first time.
Travis P.
Travis P.
2023-07-13
Excellent design and build. On time and on budget. Beautiful craftsmanship and I would recommend to anyone looking for solid good people.
Rexford H.
Rexford H.
2020-03-26
The bid process of getting a new deck was frustrating and exhausting to say the least. I recieved 8 bids ranging from 28k to 65k all giving me a wide variety of options on design and features. After getting bids from the big box stores, a couple independent crews, a few deck companies, and Ray Dertz company Mile High Designs, I decided to go with Ray's company because they could do everything turn key including stucco patch, paint, and electrical. Ray pulled all permits, got all the engineered drawings, and made sure everything was done to code. Once we got to the install, I couldn't have been more impressed with his team of deck installers. They busted everything out in 3 weeks start to finish and the stucco patch and paint took a couple extra weeks to get done but ended up looking great. The electrical step lighting and railing package is my favorite part of the deck. I'm very happy with Ray and his company and would highly recommend him for anyone who is looking to replace their deck.
Liz G.
Liz G.
2019-01-15
Ray and his team built our deck and they were great to work with. They showed up with they said they would, they communicated with us, and they finished on time and on budget. Ray was great about helping us with our design and picking materials that look great and don't need maintenance. It's been over a year since he finished the project for us, and we're very happy with it.
Cooper S.
Cooper S.
2017-12-10
I've been looking for an honest, straight forward and talented contractor and the name Mile High Designs kept coming up. Took a look at the website and reviews on Houzz and their work is beautiful and the reviews are great. I just bought my house and had a lot of questions about costs that mainly came from the inspection. Ray got back to be me right away - he was candid, he could only ballpark without seeing the house but was friendly, professional and helpful - the information he gave helped me receive a discount on the house and now I can get the work going, right after I move in. Even though the first project I want to do it small, I have other projects I'd like to do within the next six months, and it's nice to establish a relationship with a contractor you already trust.
David C.
David C.
2017-01-08
There seems to be a lack of talented contractors since the recession started, but Ray was a person who excels with his attention to detail. I have used his company 3 separate times and have not been disappointed. The first was a deck, second was a fireplace and the last was a kitchen. I am glad I finally don't need to go anywhere else. He explained every facet of the job and finished on time. Thanks Ray!!
E M.
E M.
2013-03-17
Ray Dertz and Mile High Designs completed a 500 sqft covered patio to our home in the Summer of 2012. From the beginning of the project to months after, all I can say is that we were very impressed! We contacted Mile High Designs in the fall of 2011. Ray Dertz, the owner and head contractor of the operation, came out to meet us and listen to what we had in mind. We had received several (6 or 7) estimates for our outdoor living space but got a good feeling about Ray right away. Our first impression of Ray was that he was confident, knowledgeable, and trustworthy. Through the entire process he accommodated our requests and was extremely patient with our severe indecisiveness. Never once did he push the hard sale on anything and actually recommended several design features that reduced the total cost of our project by 10% or 15%. Ray's design ideas were the best of the 6 or 7 we reviewed and his bid came in the as the most comprehensive (he included the most detail). While not the least expensive of the bids we received, it was less than the median. With any project of this size, problems are bound to arise. We had a few minor ones, such as a cracked window and some shifting and settling which affected an existing door shutting properly. Ray addressed all of these items immediately and without any issue. After the project was complete Ray checked in several times to make sure everything remained to our liking. A week or so after completion we decided we didn't like the color of our lighting trim. Ray agreed he didn't like it either and replaced without it any delay or push back. The addition to our home has really added a "Wow effect". It's our favorite part of our home, and we have yet to bring a guest out there without multiple compliments and lengthy discussion. We've said if we ever put our home on the market, viewers of it will remember it as "the house with the awesome patio". All in all, we were extremely pleased with Ray and the subcontractors he used. I would recommend him to anyone looking to add additional space to their home without reservation. He's a professional of the highest degree and a real pleasure to work with. Ed & Heather M.
Michael C.
Michael C.
2012-08-27
Ray and his crew did an excellent job on our wrap around deck with attached shed underneath. The estimates were reasonable, the crew was courteous and professional, and the work was very high quality. Ray was excellent at returning communication promptly and addressing all concerns. I would have no hesitation recommending Mile High Designs to anyone.
Naomi S.
Naomi S.
2011-08-02
We hired Mile High Designs this summer to build a pergola over our back patio. Not only is it gorgeous but it was one of the easiest and most pleasant contracting experiences we've ever had! Ray is extremely professional, responsible and dedicated to his work. He worked with us on designing the pergola and always has a "can do" attitude. We recommend Mile High Designs for any project you need.