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City Builders & Supply City Builders & Supply promotes the world's most energy efficient window with their new line of THV Compozit Thermal Line Windows. Visit Our New Section filled with comments from our clients. City Builders & Supply provides free estimates for any window, door or patio room project. Contact us today to schedule and appointment. Add space, grace and value to your home with a custom patio room.
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City Builders offers quality Starmark Composite windows by OKNA. They were designed from the ground up, with a Strong Solid Frame and Sash and exceed the most rigorous Energy Star Requirements for years of Top Performance. Custom made for you exactly the way you want them.
The secret behind this window's performance is its exceptionally low air infiltration ratings which can lower the energy consumption of a typical home by 25-40%. This unique feature, combined with our five glazing options, offers outstanding thermal performance and exceeds the most rigorous Energy Star requirements!
Is it time to replace your entry doors? City Builders has the expertise to help you select a product and ensure it is installed correctly. Updating your doors can add curb appeal and aid in energy efficiency.
City Builders is proud to be an authorized Four Seasons Sunroom dealer. Four Seasons is the premiere manufacturer and builder of year-round glass sunrooms, solariums, and conservatories in North America. The energy efficient products provide day and night comfort 365 days a year. All products are backed by the best warranty in the industry.
Create breathtaking space without breaking the budget! Enjoy the sights and sounds of nature without the bugs or temperature swings ALL YEAR LONG. The exclusive CONSERVAGLASS SELECT blocks heat in the summertime and retains warmth in the wintertime. It's made with tempered safety glass and is four times stronger than the glass in your home's windows.
Reviews (12)
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Robin Slick
Jun 13, 2022
Numerous issues with four season room and deck. Sliding doors are awful to use and lock. Personal injuries from this. Still no final inspection. Posted some pics on City Builders facebook page. I have called and emailed Dennis numerous times. Installation was poorly done, lack of knowledge on how to properly cut for things to line up. Will never use this company for anything again.
Mike Stout
Mar 31, 2022
I worked with Annie recently to replace the window coverings in my new home. I cannot express how professional, punctual and wonderful working with Annie was. Everything came out perfectly - from install to finish. Trust Annie with your needs - she will take care of you.
Jacque Knief
Mar 28, 2022
"I worked with Jerry on remodeling my bath tub in our lower bathroom getting ready to sell my house. I wish I had before pictures, because oh my gosh does it look so much better! Jerry was able to do exactly what I wanted and go all the way to the ceiling. He said he usually doesn't do ceilings, but to save me some extra time he also paneled the top of the ceiling for me!

I purchased it from him one day, and two days later he called me ready to do the project! They worked fast and efficient and kept me in the loop the entire time. The cleaning job was great and I am very impressed with the final project. Thank you Jerry and City Builders for helping me out."
Diana Weber
Feb 13, 2022
My husband and I reached out to City Builders after our sunroom had tremendous damage from a bad storm. We worked with both Al and Denny on the project and they were both exceptional to work with. We were able to build the room on a computer program which was a wonderful visual to have. Larry and Ann did our install and we were more than pleased with the installation.

We are very impressed with the insulation properties of our new room! It was very nice to have a woman on the working crew also. She was very meticulous and was always fine tuning things the way she would want the room built herself. Afterwards, she even went around with a mister clean sponge on the inside and outside to make it a clean, bright white again!

We really appreciated that. After they packed up they came back in to double check absolutely everything. We then worked with Annie on new solar roller shades to help the insulation properties of the room even more, and give it a beautiful decorative look. Thanks to the entire City Builders team for redoing our favorite area in the house. Highly recommend!
LaTonya Stokes
Dec 16, 2021
City Builders has been our go-to project company this summer! We first came to them to replace our gutters and were very pleased with that process and working with the installers. We then decided to return and purchase a sunroom from Denny! We worked with him on the project and were very pleased with being able to see the sunroom mapped out before it was built.

The installation was wonderful also but specifically because of Jon's attentiveness and being very meticulous, and Ryan's positive and extremely polite attitude. They involved us in the whole project! If they thought we weren't going to like how a certain part of the room was being built they made sure to ask us questions and build it to our liking!

Those types of installers mean a lot to us. We then worked with Annie to put sunroom blinds up. We chose a beautiful Twilight shade and the process was very easy, along with another great installer. Thanks City Builders for completing all our summer projects for us this year!
Kevin H.
May 07, 2021
City Builders is a great company. We recently used them to fix a glass door on our sunroom. Their service and crew are the best. Not only they fixed the broken glass door but they cleaned the track and applied special silicone grease that made the door glide like a dream. Their labor price was reasonable. They happened to be in the area so they gave us a discount. Thanks Al.
Victoria Keiser
Jun 27, 2020
I chose City Builders to have my sunroom roof finished and they gave me exactly what I asked for! My roof caved in last winter when the snow on it got to be too much. I had buckets in my sunroom catching water from it leaking so much! Denny came over and checked it out, and put on a beautiful white cathedral roof with a ceiling fan. The installation you can tell just by looking at the pictures that it was just beautiful.

I was able to go out and pick my own fan because I didn't want any blades and the room is so much prettier and brighter. I am more than happy with my new roof! I am currently working with City Builders to solve a walnut issue dropping on the roof, but I know I am in good hands! Thanks Denny for helping me repair my favorite room.
Bill Miller
Mar 22, 2020
To say the least about City Builders is that they absolutely exceeded my expectations and then some. I called Denny to tell him right away while the installers were still here because I was just so happy! The new Okna slider windows in the breezeway are amazing. It is so nice to be able to open every window to finally have some breeze. My old windows were very old, junky and made of aluminum.

It was perfect timing for installation because the weather is just perfect to have them all open! I appreciated that they put tarps down so the mess was very easy to clean up and they didn't leave a trace of it behind. I really am ecstatic about the job City Builders did and I'm already thinking of projects I want to do in the future! Sent from my iPhone
Jim Coloff
Feb 07, 2020
Here at 93.5 The Mix radio stations we are loyal customers of City Builders, their products and their employees! Our most recent work by them was 2 new Starmark Composit picture windows installed by Luther. The windows look fantastic and really brighten up the whole office! The cleanup was fantastic and we have no complaints! The other windows in our office were purchased from City Builders too and installed by Jon.

They've both have made us very happy with both installation processes. We were able to choose a beautiful thick white trim all around the windows that really make the windows stand out. We're very happy with the work that City Builders has done for us and will continue to keep giving Dwight, Jon and Luther a call for such a great helping hand. Thanks so much, from 93.5 The Mix!
Krisiti Purdy
Jan 31, 2020
My husband and I go to City Builders for everything that we need. Dwight has helped us do many windows in many of our properties, including my hair shop Razors Edge! Our new windows are nothing short of beautiful and it's the first thing customers compliment on when they walk in the salon. They notice they're quality and sharp appearance immediately. Dwight is awesome to work with to say the least. He is my husbands go-to guy. Thanks City Builders for helping us out with numerous home improvement projects and we know we can count on you to get a beautiful job done.
Kathy McClain
Dec 02, 2019
We bought our house years and years ago as just a starter house for us. We fell in love with it and never left! Originally we weren't going to do any work to it, but decided we wanted to replace some of our old windows in the second living room. We went with Starmark Composite windows from City Builders and they are absolutely stunning. They are so crisp and clean. Dwight came out and helped us and we're very happy with the work he did for us. Since we're planning to be here for the next 5 years I'm very happy we went ahead and decided to do the work. If we have any more work we'll be returning to City Builders!
Kyle R.
Jun 15, 2016
Denny and Dwight know their stuff and do great work with Four Seasons sunrooms. The sales and installation process is a breeze and they have done amazing work all across Iowa