Constraction reviews in Littleton, Colorado

Great work! I had GS do new Hardie Plank siding, as well as painting brick, doing new gutters, and replacing an exterior sliding glass door. The whole project was done within a week of starting, and I'm so happy with how everything turned out. Keith is great to work with, very responsive and able to adjust the job as my needs evolved.

We are so glad we chose GS Exterior Experts to do our siding project! Everything Keith told us during the sales process about what to expect and the quality of work that would be done was absolutely true. Oswald Hernandez was our project manager and his crew including Omar and Moses (I didn't know the rest of the crews names but there were 8 total) were above and beyond superior. They took the old siding off and found our home never had a plywood base so they quickly put new OSB boarding up and had all the new siding completed in 3 days. Antonio Bermudez paint crew were up next and did a fantastic job painting. Then last but not least Luis and his crew completed our gutters and they look awesome. I would not hesitate to recommend GS Exterior Experts to anyone. Although this was an expensive project, the price we paid was definitely competitive with our other bids.

We couldn't be happier with GS Exterior Experts! They breathed new life into our 1970s mountain home, replacing its 50-year-old cedar siding with a beautiful new exterior. The attention to detail from every single crew was exceptional. Oswald, our crew leader, was instrumental in ensuring a quality job was done promptly. We strongly recommend GS Exterior Experts for all your exterior renovation needs, including siding, windows, doors, and gutters.

Friendly, very competent, professional, efficient and reasonably priced. They made sure we were completely satisfied with their work. GS Exteriors was recommended to us from two neighbors up here who also used them to re-side their homes with Hardie Board up here in the mountains and were similarly impressed. Recommended.

We would like to thank all the GS Exteriors staff for the great work they did on our 1904 farmhouse. Due to the age and condition of the existing siding/trim the crews had their work cut out for them. Special thanks to Noah, Oswald, Jaime and all of his crew and painters to create the vision we have always had for our house. As the James Hardie ad says: “We have fallen in love with our house again.”

We had a fantastic experience from start to finish with GS Exterior Experts. We met John Vigil at the Denver spring home show and were immediately impressed. Now that the siding project is complete, we are thrilled with the results! We have received so many compliments from our neighbors! The installation crew was top-notch - attentive and detail-oriented. Oswald and Jaime (project leads) were terrific and a pleasure to work with! We are so happy we hired GS, and so happy with how everything turned out. Thanks GS!

We had our exterior vinyl siding replaced with James Hardie siding along with soffits, fascia, shutters, gutters and trim painting. The entire process from the initial estimate to final cleanup went extremely smoothly and the workmanship was flawless. The crews and project manager Oswald were completely responsive to our questions and made some minor changes without any need for change orders. We are delighted with the project and our home, which looks better than new. The photo shows a sample of their work.

The quality of work done by GS Exteriors is totally phenomenal and I strongly recommend you seek out their services.

The reason I had the work done was because as you could see from some of the before pictures of my home, my siding was melting.

My awesome-wonderful neighbors (they are angels!) like to have their blinds up which causes a magnifying glass effect which melted my vinyl siding. There's no way folks shouldn't be able to have their windows open for the sunlight, but those low E windows cause amazing damage when the homes are so close together. If you drive around Green Valley Ranch, you will see this proof throughout the neighborhood and of course because the material is so cheap, the homebuilder uses it. Given my issues, I knew something had to be done as the vinyl and replacement vinyl siding were melting horribly and I did not want water damage and even worse, mold.

I reached out to GS Exteriors given all of the positive results via Google, but also many other websites that confirmed their quality workmanship. When meeting with Ernest our one on one was laid back and chill. It was so easy to go through all of the project planning and I ended up going with the installation of James Hardie siding given its durability and superb reputation.

Delivery of the materials was done on time with excellent quality supplies provided. Oswald was (is - you'll see) my Project Manager and he personally made my home residing project exponentially easier. From the time of tear down to reconstruction, the project lasted less than two (2) full weeks. The crew was just top notch, they cared about question I asked and they made sure I was comfortable throughout the entire ordeal. The cheap vinyl siding came off with ease and the cheap Oakwood Homes house wrap was like a paper towel - it just ripped apart with no effort. I am a fan of James Hardie siding and as you can see, it looks amazing.

Now, onto the storm most Denverites won't forget, 05.30.2024. Many homes throughout my community that have vinyl siding had damage to say the least but my James Hardie siding withstood the brunt of the worst storm since 2014 and without a scratch!

Thank you to the crew, project manager and owner. I could have done without the devastating storm but I feel so much better that I have GS Exteriors as they have my back and will not only restore my home, but just make it better (and my parents too).

I love my new roof! The entire process was smooth and fast, thanks especially to Jacob, who walked me through every step and made sure all my questions were answered. He also knows all the best gyro places in the city. The crew was professional, efficient, and did excellent work. Highly recommend this company!

GS Exterior Experts were great from start to finish. We found them through our neighbor as we saw how quick and professional they were doing their siding project.
GS Exterior Experts are very responsive and had a good competitive price. We had whole house siding, new window, new entry door, and new roof due to hail damage. The various separate crews used for the roof, siding, gutters, entry door and windows, were fast, efficient, knowledgeable, and cleaned up every day. We are very happy with everything, especially the look of the James Hardie fiber cement siding.
Oswald, the lead coordinator for our project was great to work with. We recommend using GS Exterior Experts.

I am extremely happy with the new DECRA roof I recently purchased from GS Exterior Experts. I highly recommend that you consider this company if you need a new roof. From the very beginning, Jacob Dodge was a pleasure to work with. He answered the questions my family had about the different product options and kept in constant communication about the project once it began. I never felt like Jacob was pressuring me for a sale and always found that he had my best interests in mind when he made a recommendation, sometimes resulting in me saving money on the project. After considering bids from other companies, we found that GS Exterior Experts were very competitively priced. Additionally, Jacob and his team were excellent about following up after they provided us with a bid and did not desert us, like we experienced with other companies. During installation, Oswald Hernandez and his crews worked tirelessly to get the project done promptly and professionally. I really appreciated their efforts to ensure our home was protected when it rained during the project and also their willingness to work on weekends to keep the project completion date on schedule. Fantastic job, Jacob, Oswald, and the GS Exterior Experts Team!

Ernest and Oswald were great to work with. We initially reached out in 2020 about a siding project, and each year Ernest would send one quick check-in with updated prices (if we wanted them), but never once hounded us unlike some other companies we got quotes from. Once we finally reached out to let him know we were ready to go, they were very prompt and within 3-4 weeks they got started. The job was finished in less than a week for a three story home, and our house now looks incredible and bird-free! (Goodbye nuthatches, northern flickers, and tree swallows.) The team was professional and friendly while on site. They cleaned up everything on the last day leaving our deck, patio, and yard looking better than when they started. Best of all, you cannot beat their price. If you’re skeptical because their quote is lower than anyone else, don’t be. Sometimes a good thing is actually a good thing, and GS Exterior Experts is a good thing! We’ll be reaching out to them for all of our home exterior projects moving forward!

GS Exteriors just completed our siding, and we couldn’t be happier with the results! I highly recommend them without hesitation. Their craftsmanship is impeccable. After researching and getting multiple quotes, we found that they offered the best price along with exceptional quality.
The team was responsive, easy to communicate with, organized, clean, and professional throughout the entire process.
We worked with Manny, Oswald, Sandra, Javier, and several others—apologies for not naming everyone, as each team member worked incredibly hard. We’re very grateful for the beautiful outcome!

Ernest and his team were a pleasure to work with! We looked at several different companies and we decided to go with GS Exterior Experts, their prices were very reasonable and their work was top tier. They were very patient with us as we sorted out the financial situation with the insurance company, even helped us out in that department, and did great work after we got everything sorted out. Highly recommend! We will be using them again in the future for other construction needs that they provide.

We had GS Exterior Experts install new James Hardie siding, soffit, fascia, and gutters on our home. Oswald, Wesley and their crew were wonderful to work with onsite -- very communicative and respectful. We're extremely happy with the end result and would highly recommend them for anyone looking to install Hardie Board or complete an exterior project!

After a terrible hail storm tore through our vinyl siding, we contacted Mr. Ernest Lopez and he walked us through the process of replacing our siding and gutters, from creating color harmony between the siding, the trim and the shutters to insulating the home with a protective barrier. This is an amazing company, under the supervision of their Project Manager, Mr. Oswald Hernández, my home’s exterior was covered in James Hardie siding. This project was completed a little over a year ago, and I have since been exceptionally impressed with their customer service and attention to detail. I have enthusiastically recommended them to family and friends, including neighbors who stopped by and asked about our great looking siding. Any issues and or concerns were always addressed by Mr. Hernandez within 1 to 2 business days with personal courtesy and professionalism.

We had them install beautiful James Hardie siding on our mountain home. From John, owners initial quote and time to Oswald and Jaime managing the project and crew, I couldn't be more impressed. We had them install the color siding but trim didn't have colors we liked so we painted ourselves. They made sure it was all delivered for only the items to paint and second delivery for stuff to install closer to project start. The crew attended to every detail including some weird areas with an addition we did to the house. They are truly experts of this product, made sure things are sealed up properly, manually hand painted all touch up areas and even painted the cut end of the trim we painted. We fully expected to have to do the touch up ourself. They were all very kind and did a great job cleaning up throughout the day and after each day, even in our heavy winds in the mountains. We had multiple quotes to compare and these guys we in line with the rest but their service heavily exceeded my expectations, which are all the items you can't put on the quote.

In August 2025, GS Exterior Experts replaced the vinyl siding on our Boulder house with James Hardie siding, along with soffits, gutters and several windows. Working with GS Exterior Experts and their Project Manager Oswald Hernandez was a very pleasant experience for us. We can recommend this company for their high-quality work and their excellent interaction with their customers. All team members worked extremely hard, were well organized, communicated well with us throughout the entire project, and stayed on schedule. We are very happy with GS Exterior Experts' workmanship and will definitely consider them for future exterior projects on our house.

I would highly recommend GS Exterior Experts if you’ve decided to go with Hardie Board siding. They transformed our home exactly the way we envisioned and discussed before the project began. Jaelynn and their siding and painting crews are top-notch and professional throughout the entire process. I would give more than five stars if I could!

We are absolutely thrilled with the new siding installed by GS Exteriors! From the very first consultation, their team was professional, knowledgeable, and transparent about the process and pricing. Their 3D modeling software helped us choose the perfect James Hardie siding style and color for our home, and the entire project was completed exactly on schedule. Armani was available to answer all of our questions about their bid and the way the crew would handle some of the unique aspects of our home including the solar energy box and the dish.

We had a couple of minor miscommunications about the location for materials and the dumpster at the start of the job but the project manager, Oswald, was responsive to our concerns and handled them immediately. The crew, led by Wesley and Erlyn, was fantastic—they were incredibly efficient and their attention to detail was top-notch. They worked tirelessly to ensure everything was perfectly installed, and the quality of their craftsmanship is evident in the final result. They also did an excellent job of cleaning up the site each day, which we greatly appreciated. They handled a couple of unpredicted issues quickly and professionally.

Our home looks brand new, and we couldn't be happier with the transformation. We highly recommend GS Exteriors to anyone looking for high-quality siding work. They truly exceeded our expectations.

After recently meeting with four different siding companies, we hired GS Exterior Experts to install James Hardie siding and I couldn’t be happier with our decision. From start to finish, the experience was excellent.

The owner and salesperson, Keith Vigil, was outstanding—extremely knowledgeable, patient in answering all my many questions, and always responsive throughout the decision-making process. He really gave us confidence that GS was the right choice.

Our project manager, Oswald, brought great energy to the project. He was enthusiastic, quick to answer questions, and kept everything moving smoothly. The entire crew was exceptional as well—they arrived on time every day, worked hard, and left the property neat and clean at the end of each day. Not only were they skilled, but every crew member was also friendly and clearly took pride in their work.

The quality of the installation exceeded my expectations. I’m pretty detail-oriented, and during the final walk-through with Oswald, I couldn’t find a single punch list item—everything was done right the first time. The siding looks amazing and has completely transformed our home.

GS Exterior Experts was competitively priced, professional, and delivered top-quality work. After having some disappointing experiences with other contractors in the past, this project was a huge relief and a real pleasure. Highly recommended!