“I have worked as the engineer for Mr. Warren for approximately 15 years. He is one of the most knowledgeable clients that I have and pays attention to the littlest of details. I have recommended JC Warren Enterprises to many of my clients and will continue to do so. Beyond Mr. Warren’s skills as a general contractor he is an extremely kind individual and it has been a pleasure to meet several of his family members over the years."

- James M.

"John Warren added a 3-story addition to an older home, built a new 3-car garage and helped us create beautiful hardscape. The subs he brought in were skilled and responsible. We were extremely pleased with the results. John provided various options to help us make key decisions. We so appreciated his wisdom and patience with us!"

- Ann A.

"My wife and I used John Warren to re-do our kitchen, family room, basement and other projects in our home in Parker. He always used high quality materials, craftsmen and finished the work on time to our specifications We recommend him highly."

- Tom and Laurel C.

“I have worked with JC Warren Enterprises on multiple occasions over the course of the last 20 years. I’ve continued to use the company based upon the quality of work I’ve received. Not only do I appreciate the ability to communicate concerns, but I appreciate the professional teams that have been involved in the work process. I’ve had two major house remodels and a business buildout from JC Warren. Big projects typically encounter a few problems along the way, but the customer service I appreciate the most is the ability to resolve those issues and have it be courteous and prompt. JC Warren was always great about listening to ideas and concerns and incorporating them into the finished work. I highly recommend the team at JC Warren.”

- Tony W.

"I am pleased to write this letter of recommendation for John Warren, with whom I’ve had the pleasure of working on numerous successful projects over many years. Our longstanding professional relationship has been marked by trust, collaboration, and consistent excellence. John is a consummate professional whose attention to detail, depth of knowledge, and dedication to quality have always stood out. Whether navigating complex project challenges or ensuring the seamless execution of a design, John brings a level of care and precision that elevates every team he works with. What truly sets John apart, however, is his character. He is a stand-up individual—honest, reliable, and consistently respectful in all interactions. He’s also a genuine pleasure to work with, bringing a positive attitude and cooperative spirit that makes even the most demanding projects run more smoothly. I recommend John without hesitation for any endeavor he chooses to pursue. You would be fortunate to work with him.”

- Steve C.

"As is common with most projects, I met with multiple contractors to provide bids for our project. John was the only contractor to show up early or on time to meet with us. Additionally, he printed out a full set of the drawings. This showed me that he fully understood the complete scope of work for the project as well as it showed me that he truly cared about providing a successful project on schedule. During the construction, he was easy to communicate with and was willing to work with us when any surprises came up. JC Warren has a lot of experience in the Denver area and knows good subcontractors that he trusts to provide a successful project."

- Tom and Kelly I.

"My wife and I used John Warren to re-do our kitchen, family room, basement and other projects in our home in Parker. He always used high quality materials, craftsmen and finished the work on time to our specifications We recommend him highly."

- Tom and Laurel C.

"Our house was flooded and we had to start over. John Warren was a great communicator with us and with our insurance company. He gave us materials’ discounts; did excellent work; and made everything right."

- Jeanie H.

"JC Warren Enterprises has been my contractor for a multitude of upgrades and project remodels throughout the last 15 years. John’s knowledge of the industry has been valuable in that he keeps abreast of current trends and maintains a healthy list of subcontractors. He is fastidious in the quality of work he provides, seeking perfection in all areas of his service, and works closely with his subs through completion of the project. I would recommend this company using a keyword, 'Integrity'!"

- Linda B.

"JC Warren Enterprises has done 3 different additions for us and also one kitchen remodel. The additions included a new study, a master bedroom with two walk-in closets and master bathroom. A huge value was their design and creativity turning a useless attic space over our garage into a master bedroom suite giving us a first-floor master bedroom and increasing our square footage on the main floor by 450 square feet. All projects were managed very well. The work was excellent; we appreciated their work order efficiency, keeping us up to date on progress and cost. They are a business with integrity. We highly recommend JC Warren Enterprises."

- Carol A.

"We worked with JC Warren on a full interior renovation of our Platt Park bungalow. They were responsive, stayed on schedule, provided clear details on any budget adjustments, and, most importantly, got us back into our beautifully redone home before the holidays. They have continued to be responsive to any small issues we’ve discovered over the past year. We would absolutely recommend them and hire them again for any future projects."

- Amanda H.

"We have known John Warren of JC Warren Enterprises for about 12 years and have done major remodels (kitchen, master bath) and several more minor projects with him. He has always been attentive to our needs, uses excellent subcontractors and completes projects on time and to our complete satisfaction. If there is a problem that seems impossible to solve, John always has the ideas and know-how to make the problem become a solution. We highly recommend JC Warren Enterprises to anyone needing a contractor!"

- Linda E.

"I contacted JC Warren Enterprises to perform a roofing, facia and soffit project that arose at an estate I managed in Evergreen, CO. I had known John as my supervisor while employed at D Enterprise, a design / build firm in Denver. When I first began working with John, I immediately noticed his courteous, friendly and outgoing demeanor. I soon realized that John was a man of impeccable character and integrity. Knowing this about him as well as knowing his vast knowledge of construction, JC Warren Enterprises was the first and natural choice for my project. I was not disappointed. I received a fair price and a clear and straightforward timeline. The project was completed on schedule and without issue and I was very pleased with the excellent workmanship. If you are looking for a company that will give you a fair and accurate price and will perform the work with excellence and integrity, look no further than JC Warren Enterprises."

- Michael J.

"Over six years ago, we hired JC Warren Enterprises to remodel an entire floor of our home—and to this day, we still walk through our space with gratitude and zero regrets. Our home, originally built in the 1960s, had great bones but felt closed off and dated. John and his team brought it back to life with vision, precision, and craftsmanship that has truly stood the test of time. From the expansive kitchen with custom cabinetry and modern finishes, to the refreshed bathroom with sleek, timeless tile work, every detail reflects excellence. But what has mattered most to us is John himself. His integrity, honesty, and steady presence made a potentially overwhelming project feel manageable and even enjoyable. He treated our home like it was his own and worked with a level of care that’s rare to find. We always say that JC Warren didn’t just renovate our home—he restored it. We still recommend John to friends without hesitation, and we’ll continue to do so for years to come."

- Jeff G.

"Working with John Warren and Company was, without doubt, a premier choice for a personalized home-building experience. I personally believe that making a great home takes more than just expert technique and quality materials. They are created from a shared dream, compromised with collaboration, and stand as a testament to our unique story. John was all these things and much more. Open communication, trust, excellent craftsmanship, and a smooth handover, are John’s core competencies, ensuring our peace of mind. During our basement transformation, we were kept informed and involved, always in the loop, especially in the discovery of complex existing conditions, the many subtle design changes, and cost impacts. Also, an incredibly important aspect is John’s sub-contractors. They are experienced and are easy to work with, and they always get the job done!"

- Richard G.