Providing InnovatiVE Solutions

1 CORE Construction is a design & build general contractor serving Kansas City since 2004




Ou company is a collective of amazing people striving to build delightful projects

1 Core Construction is the premier construction and development company committed to delivering unparalleled customer satisfaction. Our expertise lies in crafting exceptional residential and commercial construction projects, from groundbreaking new builds to extensive remodels. Our dedicated team of seasoned professionals are proficient in all aspects of construction, guaranteeing superior quality and safety standards. We take immense pride in providing top-notch service, building solid customer relationships, and ensuring seamless project management from start to finish. 1 Core Construction delivers market-leading results, constantly exceeding expectations. Choose us for a gratifying experience that is hassle-free and surpasses all your construction needs.

Cole VanBlaricon
Cole VanBlaricon
January 28, 2024.
Julian is the man! If you don't read the rest of this - just know your search for a contractor is over. If he has time (because contractors like Julian don't go without work) this will be the best decision you've made in the entire project. Julian helped me and my girlfriend renovate our first home. It was a $120k home and we put $75k into it. We knew absolutely nothing, were scared, and needed someone to lean on. We were so lucky to have found Julian. He was patient, communicative, descriptive, understanding, knowledgable, and creative. Him and his team did amazing work from start to finish. During the project, when problems arose, Julian quickly and simply explained to me what was going on and gave me options on moving forward. I know a project isn't going to go perfect, but never once did I feel Julian was misleading me or playing me for a fool. He went above and beyond, not just in terms of quality of their work, but to ensure I was pleased with where we were at and how things were going. Ok - now here's the best part. We did A LOT of work - this house was barely livable when we started and afterwards it's one of the most promising on the block (we still have a bit of planned work to do). He and his guys got it all done in just 3.5 months. Julian doesn't mess around! Trust me, you won't go wrong choosing Julian and 1 Core Construction.
Liley Villazan
Liley Villazan
June 5, 2023.
I use Core 1 for plumbing 4 pedicures chairs and 3 sink installation. They work in the evening to keep the noise level down during the day. The guys left my area clean and everything in place when they were done. Also, I received a 1 year warranty for their work. Very impressed with the quality of work performed.
Nick D
Nick D
May 12, 2023.
Got a backdoor installed onto my house and a fence put up in my backyard. 1 Core had the best pricing, by a few thousand just for this small project. Workers were polite, professional, and efficient. This will be the first company I get a quote from if/when I get more work done
Judy Giles
Judy Giles
April 21, 2023.
They put in a new water heater and did some lead testing and cleaned up lead. The company was so professional and communication was a key factor between owner and client. I would recommend the 1 Core Contruction LLC company for all home construction needs.. Very professional. Thank you Mr. Flores and crew.
Sherice Anderson
Sherice Anderson
August 15, 2022.
Wonderful customer service!!!
Shirley Bordeaux
Shirley Bordeaux
July 22, 2022.
1. Job was about a year ago. We had a pretty long “wish list” of repairs and installs. All jobs were done very well and to our satisfaction. Everyone was professional and did great work. We’re very happy with 1Core Construction and would use them again without hesitation. And recommend you to use them too for any work you need done. 2. Early spring 2022 was a job changing a wood 10x10 deck to a 10x12 composite deck. 3. About June of 2022 repairing the wood frame around the garage doors. 4. End of July 2022 bathroom remodel. And I love it. Everyone that has come to see it is really impressed and jealous. Julian is great to work with. Makes great suggestions and listen’s to what you want done. I will definitely be giving him more business. And a neighbor asked for his contact info.
Nina Richman
Nina Richman
April 15, 2022.
My husband and I have used Julian on several different homes for just about everything under the sun. He never ceases to amaze us. He is our go-to contractor whenever starting a project and out go-to contractor whenever someone needs a recommendation.
Angela Moore
Angela Moore
March 30, 2022.
The nicest crew you'll ever meet. They did not rush us and gave us time to make choices for items we wanted. They Understood our budget and stayed well within our goal not maxing us out. They were on time everytime. Went to great lengths to Explain in great detail how they will work. What their doing. Why its being done certain way.etc... Left behind a very clean work site. Everyone was a Fast worker actually working. Even took time after they job to grade the land where our basement is; so the rain can go down the hill and not flood our basement. They hauled away old gutters and shingles and put up new ones that looks AWESOME! Never had to worry about trash. We have 6 kids and 2dogs. They took every safety protocol to make sure they were safe before, during, and after the construction when installing roof as the kids were going and coming back from school. We had a hole in your ceiling and it has not leaked an since the work has been done. They sister joist the beam for extra support and put down new ply wood vs. Just going back over the the old one and calling it a day. They did the job right the 1st time so we can live sleep in peace knowing it's mold free. They got to the source of all our problems. We couldn't be more happier to find and use their services and will call them in future when needed.
Rita Huey
Rita Huey
March 7, 2022.
Great new roof and gutters. Fixed wood rot on back of house and did exterior painting. Great job! His work crew stayed with each project until done. Good feedback on what would be done.
brandi severson
brandi severson
November 20, 2021.
1 Core Construction is highly recommended! Their professionalism, timeliness, and dedication to their work can not be commended enough. If you need expert help with construction projects, 1 Core Construction can help! Thank you 1 Core, for all you have done to help me with my mother's repair needs! - Brandi


  • Full house rehabs
  • Custom cabinetry
  • Gutters
  • Fire and water restoration
  • Flooring
  • Exterior building
  • Lead-based paint remediation
  • Woodworking
  • Windows and door replacement
  • Roofing
  • Fences
  • Driveway in exteriors

Full House Rehabs

Custom Cabinetry


Fire & Water Restoration


Exterior Building

Lead-Based Paint Remediation


Windows & Door Replacement



Driveways & Exteriors

Commercial Rehabs

Plazas Builds & Rehabs

Restaurant Builds

Storage & Distribution Centers

Office Buildings

Apartment complexes

Clinic Rehabs


While others may offer quality service or low cost, we have the ability and experience to deliver both.

1 CORE Construction is a design & build general contractor serving Kansas City since 2004.

1 CORE Construction offers personal and professional services when designing and building. We work with engineers and architects, offering complete turn-key for full rehabs and new builds.

We are Certified General Contractors, we will work with you to ensure that your construction project is done correctly and on schedule. A project well done is one in which everybody benefits. When you trust us to build your next project.

General Contractor work sample


Harrison Project

Kitchen General Contractor

Oak Street Project

Wyandotte Project

Let us help you build your NEXT PROJECT

Let’s make your vision a reality!

Want to discuss your next project? Use the button below to book a NO COST appointment.

Or call direct at 913-314-1931