Calhoun W. Cox, Jr., Founder

Cal Cox grew up in Seneca, South Carolina and received his Bachelor of Science from Clemson University in 1964.

He served in the Army Corps of Engineers/Special Forces for seven years and is a veteran of the Vietnam War.

Cal worked in the construction industry for 36 years and founded Calcon Constructors in 1981 in Denver, Colorado.

Throughout the years, Cal served as the President of the Associated General Contractors of Colorado, as well as on numerous boards, including: the Alzheimer’s Association of Colorado, Eleanor Roosevelt Institute for Cancer Research, National YMCA of the USA, Young Americans Bank, Metropolitan YMCA, American Heart Association, M.S. Society and the Colorado Center for Reproductive Medicine.

Mr. Cox has received two Humanitarian Awards, the Henry M. Porter and the MS Humanitarian Award.

Now retired, Cal fills his days with golfing, traveling and spending time with good friends.

James P. Bosshart, Co-Founder and CEO

Jim graduated with distinction from Iowa State University with a Bachelor of Science in Construction Engineering.

Jim co-founded Calcon Constructors in 1981 and currently serves as Chief Executive Officer. He is involved in all business aspects, including marketing, estimating, project management and office management.

Jim is very involved in the industry; he has served on many committees, including a position as Executive Committee Board of Directors for the Associated General Contractors of Colorado.

Joseph S. Gallion, Jr., President

Joe, who received his education from Colorado State University, has been with Calcon since 1982, and currently serves as the company’s President.

Joe is responsible for all business aspects, including: marketing, estimating, project management and field management.

He remains very active in the construction industry, and has held positions as the Chairman of Colorado Neurological Institute, Chairman of the Board for Southwest Family YMCA and as the past President of the Construction Industry Training Council.

Presently, Joe sits on the board of AGC Colorado and is a member of the National Western Stock Show.

When not in the office, Joe enjoys golfing, skiing, cycling and traveling.

Jim Kohler, Vice President

Jim Kohler, whose experience encompasses both architecture and construction, joined the Calcon Team in 1994.

He graduated from Virginia Tech with a Bachelor of Architecture and a Master’s of Science in Construction Management.

He is a Vice President and a stockholder, and also serves as a Senior Project Manager and Estimator.

Jim handles pre-construction, estimating and project management for Calcon’s projects, seeing them through construction, closeout and warranty

He has been involved with some of Calcon’s more notable projects and is an active member of the Association of General Contractors.

When not in the office, Jim loves ski racing, dirt biking and cycling.

Brian Mortimore, Vice President

Brian has been with Calcon since 1999 and is currently a Vice President of the company. He is a proud CSU alumnus and graduated with a Bachelor’s degree in Construction Management.

With over 20 years of experience in Project Management, Brian is a vital asset to Calcon’s customers and vendors.

Brian has completed many notable projects for Calcon in the retail, technical, healthcare and mixed-use categories.

He is LEED AP certified and a Certified Healthcare Constructor.

In his free time, Brian enjoys golf, the outdoors and spending family time with his wife and twin girls.

Jeff Johnson, Vice President

Jeff joined Calcon in 2007 and is currently a Vice President of the company.

He has a Bachelor’s degree in Construction Management from CSU and brings 19 years of Project Management experience to the table.

Jeff has completed many of Calcon’s most notable builds in the healthcare industry, including: specialty medical facilities, medical office buildings and hospitals.

Jeff is a LEED Green Associate, Certified Healthcare Constructor and a member of CAHED and ASHE.

When not at work, Jeff enjoys time with his wife and two girls.

Pinnacle Eye Center and Surgery Center

This medical office building and surgery center was constructed as a shared space through the collaboration of four specialty eye doctor groups and ten investing doctors.

The surgery center, which is owned and shared by the investors, has three operating rooms with a storage room designed to be the fourth- if need be.

The exterior contains two large cantilevered canopies, which are supported by large cables, affording the doctors a clear view of Pikes Peak.

Total: 48,328 ft2
Owner: Pinnacle Eye Center and Pinnacle Surgery Center
Architect: Marasco & Associates

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Rose Founders Medical Office Building

This building is the premier medical office on the Rose Founders campus.

With multiple entry points for easy patient access, unique architectural features and the latest in energy efficient building systems, Rose Founders is a benchmark for high-end medical office space.

Total: 129,688 ft2
Owner: Rose Medical Center
Architect: HLM

 

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Sky Ridge Medical Campus

Calcon helped to create the impressive Sky Ridge Medical Campus in Lone Tree, CO.

This massive project included three four-story medical office buildings, a cancer center, a pediatric emergency department and imaging center, a gastroenterology and endoscopy suite, a tenant buildout for a new imaging suite, a reproductive center, a new four-level parking garage with spaces for 1,000 vehicles, an east surface parking lot with 120 stalls and a detention pond.

Total: 829,964 ft2
Owner: HCPI, MedCap Properties, Weyland Enterprises
Architect: Davis Partnership Architects, P.C.

 

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Swedish Medical Campus

Located in Englewood, CO, this project included the construction of three new medical office buildings, a new ambulatory surgery center, a radiation/oncology suite, multiple pedestrian bridges and a 92,000 ft2 parking structure with 283 stalls.

Total: 330,642 ft2
Owner:
Weyland Enterprises
Architect:
Davis Partnership Architects, P.C.

 

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Yampa Medical Campus

Located in Steamboat Springs, CO, the Yampa Medical Campus includes the Yampa Valley Medical Center, the Yampa Valley Medical Office Building, the Grandkids Daycare Center and the Doak Walker Extended Care Center.

The medical center is a full-service hospital, boasting three operating rooms, two procedure rooms for day surgeries, a laboratory, a pharmacy, a medical records space, five LDRP, a nursery, 12 single patient rooms, four double patient rooms and four ICU rooms. The center also contains facilities such as a kitchen, laundry room, dining space and administrative areas. 

Total: 104,109 ft2
Owner:
Steamboat Springs Healthcare Associates
Architect:
Vaught Frye Architects, Inc., Davis Partnership Architects, P.C.

 

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Littleton Adventist Hospital

Calcon constructed the Littleton Adventist Hospital in just 20 months, including design time. The hospital was a design/build contract with Calcon Constructors, Inc. as the prime contractor.

The 201,700 ft2 hospital, 7,300 ft2 power plant and tunnel were built on 38.8 acres of land. The administrative and patient care areas connect to a central mall, which contains the check-in area, chapel, gift shop and dining space.

The west-end of the central mall boasts a glass wall, 25 feet high, looking out at Mt. Evans. The interior finishes were more high-end than those of a typical hospital, including the floors of the obstetrics room, which were made of oak sandwiched between clear vinyl layers, yielding the appearance of a hardwood floor with the convenience and cleaning ability of a vinyl one.

All patient rooms are private with a view of the mountains.

Total: 209,000 ft2
Owner:
Centura Health Care
Architect:
Davis Partnership Architects, P.C

 

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Fortune 100 Tier 3 Plus Data Center

Calcon Constructors creates the best build plan for your business’ needs, just like we did for this high-tech data center for a Fortune 100 company.

This 142,510 ft2 project was completed in multiple phases and included 58,000 ft2 of white space, a new three-story building, a new two-story building, a utility yard, a shop addition, a secondary condenser water source and generator enclosures.

 

Total: 142,510 ft2
Owner:
Confidential
Engineer: 
Swanson Rink, Inc.
Award: LEED Gold Certified

 

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Lake Cedar Group Digital Broadcast Facility

This digital broadcast facility was constructed on top of Lookout Mountain. Not even Mother Nature could stop our plans. Despite the fact that the tight access road made site access extremely challenging, limited deliveries and challenged standard material handling techniques, we still created an impressive build for the Lake Cedar Group Digital Broadcast Facility.

The entire building and tunnel excavations were in bedrock, requiring extensive blasting. The site had an extremely steep slope— a 20° drop, 400 feet from the site entry to the lowest anchor for the tower below.

Calcon had a chance to flex its collaborative muscles, as extensive coordination with each television station was required in order to avoid conflicts with respective equipment and waveguides.

 


Total:
300,000 ft2
Owner:
Lake Cedar Group
Engineer:
Charles Steckley Architecture
Award: AGC Ace Award for “Meeting the Challenge of a Difficult Job”

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Media Network Data Center Expansion

Calcon Constructors had the opportunity to work on this high-tech data center for a Fortune 100 Company in Centennial, CO.

This build consisted of the expansion of a current data center.


Total:
13,000 ft2
Owner:
Confidential
Architect: Studio Collaborative

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Telemundo T.V. Studio

When it came time to construct Telemundo’s new TV studio, we here at Calcon were excited to demonstrate our technical build know-how.

This project, based in Centennial, Colorado, included the construction of a television studio, a control room and a set of offices.


Total:
6,500 ft2
Owner:
Confidential
Architect: Shopworks Architecture

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The Daniel L. Ritchie Wellness and Sports Center at University of Denver

Calcon delved into the waters of higher learning when we were contracted to create the Ritchie Center for the University of Denver.

This massive build took three years, starting with the demolition of the existing gym structure.

The finished product was an impressive three-story superstructure with a mezzanine and basement levels.

In addition to the shell and core, Calcon built the Burns Ice Arena, Hamilton Gymnasium, Magness Arena, William Bell Tower, Marion Gottesfeld Room, El Pomar Natatorium and the Gates Field House.

 

Total: 300,000 ft2
Owner:
Lake Cedar Group
Engineer:
Charles Steckley Architecture
Award: AGC Ace Award for “Meeting the Challenge of a Difficult Job”

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Boulder Jewish Community Center

When it came time to construct the Boulder JCC, a two-story educational community heritage center, we were on a mission to create something beautiful, functional and unique.

This construction included a wing for daycare and education, a gymnasium and fitness center, a full commercial kitchen, a community hall with a stage, a library, administrative offices and a large outdoor gathering area, complete with a fireplace.

We chose to include high-quality finishes, so this would be a building visitors were happy to be in; the community hall contains six suspended, maple "clouds," engineered to a dimension of 10’x48’0,” and a stage with event lighting and state-of-the-art audio/visual setup.

The entry of the main lobby has a sandstone wall that stands 36’0” tall by 80’0” long with 21 openings, porcelain floor tile, a gas fireplace and cedar ceilings with a 40 foot-long sloped skylight.

“At each step in the process, we were beyond impressed with Calcon's integrity, diligence, friendliness, and heart. Calcon made this construction project a positive experience for our entire community.”

                                                                                                       – Scott Peppet, Boulder JCC

Total: 52,444 ft2
Owner:
Boulder Jewish Community Center
Architect: 
Davis Partnership Architect, P.C. 
Award: 2016 Bronze AGC Ace Award for “Best Project” ($10 Million-$40 Million)

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Lakewood Country Club

The Lakewood Country Club provided us the perfect opportunity to flex our design muscles.

For this project we created various high-level interior finishes including five masonry fireplaces with alder wood surrounds or stone surrounds.  All casework and millwork were made from alder wood, including the men’s and women’s lockers.

The club contains two different bars for socializing, the walls of which were applied with a skip trowel finish.

 

Total: 62,770 ft2
Owner:
Lakewood Country Club
Architect: 
John Williams Architecture

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Winter Park Lunch Rock

This digital broadcast facility was constructed on top of Lookout Mountain. Not even Mother Nature could stop our plans. Despite the fact that the tight access road made site access extremely challenging, limited deliveries and challenged standard material handling techniques, we still created an impressive build for the Lake Cedar Group Digital Broadcast Facility.

The entire building and tunnel excavations were in bedrock, requiring extensive blasting. The site had an extremely steep slope— a 20° drop, 400 feet from the site entry to the lowest anchor for the tower below.

Calcon had a chance to flex its collaborative muscles, as extensive coordination with each television station was required in order to avoid conflicts with respective equipment and waveguides.

 

Total: 16,021 ft2
Owner:
Intrawest
Architect: 
Kohler Design
Award: 2015 Golden Eagle Award for Environmental Excellence

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Four Points at Steamboat Springs

Calcon constructed the Four Points Lodge in Steamboat Springs over 203 days.

This project required intense planning, scheduling and teamwork in order to bring it to fruition, as the Lodge currently rests at an elevation of 10,000 feet with remote, high mountain access.

By implementing an aggressive snow-removal plan, the project was able to start in April, despite the 96” of snow on-site. Our build plan was adaptable yet aggressive to compensate for the additional 60” of snow that fell in June and the record snowfall that occurred in October.

A design/build contract allowed design-to-budget to occur in a short period of time, streamlining the delivery system.

 

Total: 14,000 ft2
Owner:
Steamboat Ski and Resort Corp.
Architect: 
Kohler Design

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North Routt Community Charter School

Calcon was proud to provide such a high-quality, eco-friendly school to our mountain school system in Clark, Colorado.

This LEED Platinum-certified school utilizes photovoltaics and sunlight-harvesting in order to reduce energy consumption. The build also included finishes such as cabinets, a biomass boiler system and beetle-kill, interior wood trim.

 

Total: 12,656 ft2
Owner:
North Routt Community Charter School
Architect: 
Michael J.K. Olsen
Award: LEED Platinum Certified

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Westmoor Office Park

During the 16-month long Westmoor Office Park project, we created four buildings measuring 647,000 ft2.

Each building within this build complements the others, mirroring aspects of the other buildings while still retaining a sense of originality.

Office Building 7 stands apart due to its exterior, which appears as wave due to the materials chosen. This building boasts a unique skin composed of a Centria metal and urethane sandwich panel system. The glazing is an aluminum storefront and curtain wall system with reflective glass at the south elevation to reduce heat retention.

 

Total: 647,000 ft2
Owner:
Westmoor Building Park Ltd., LLP
Architect: SEM Architects, Inc.

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Credit Union of Denver Alameda

Though it’s currently under new ownership, we still hold this building project near to our hearts.

The three-story build includes a curved entrance bay and underground parking levels, which can be reached via a ramp on the street. In the winter, hot-water heating coils embedded in concrete prevent ice from accumulating on the ramp.

We created the second-floor level roof deck to be accessible; this 2,200 ft2 space, laid with ceramic tile, can be accessed from both the executive offices and the employee lounge of the principle tenant.

The features of the entrance lobby of the main building are quite distinctive considering its size— marble and ceramic walls, floors and benches, a 27-foot ceiling and an upper-level gallery.

Furthermore, we constructed this structure with special attention, as we had to build the property line on the main arterial, which required shoring.

 

Total: 6,660 ft2
Owner:
Credit Union of Denver
Architect: 
Lee Architects/Interior Designers

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Lowry Business Park and Parking Garages

The project construction for the Lowry Business Park and Parking Garages was completed in 11 months, including the build of three new multiple-story office buildings. The skin on the buildings is a conventional brick veneer with an aluminum storefront and curtain wall and the glass is a high performance, Viracon Low-E product.

In addition, Calcon constructed three new parking garages, totaling 661 parking stalls. The project scope throughout the facilities included the coordination of both stainless steel and glass office partition systems

 

Total: 585,592 ft2
Owner:
Westfield Development Company, Inc., Pinnacol Assurance
Architects: 
SEM Architects, Inc., Burkett Design

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Howelsen Place

Located in Downtown Steamboat Springs, Howelsen Place graces the previous site of the historic Harbor Hotel.

Howlesen Place contains 42 luxury apartments, 60 covered parking stalls and one level of retail space.

Construction on this project was challenging due to restricted access and extensive micro-pile shoring on all four sides of the project.

The buildings’ interiors include cork flooring, patterned tiles, Silestone countertops, stainless-steel appliances, clear Alder millwork and designer fixtures throughout.

The buildings are finished off with a stone and brick exterior, lofting balconies, steel trellises, a rooftop garden and a rotunda.

 

Total: 127,000 ft2
Owner:
Green Courte Partners
Architect: Eric Smith Associates
Award: 2009 AGC Ace Award “Project of the Year” ($15 Million-$30 Million)

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Broadway Plaza

Located in Downtown Denver, this nine-story affordable housing building contains 233 apartments units, four levels of parking and one level of retail space.

The apartments boast a loft-like feel with exposed concrete ceilings.

A highlight of the project lies on the ninth level, where breathtaking city and mountain views pervade the common space and exercise room.

We completed construction for this beautiful project on-time and above expectation in just 18 months.

 

Total: 296,000 ft2
Owner:
Century Real Estate Services
Architect: 
J G Johnson Architects

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Lamar Station Crossing

We love to build Colorado. The Lamar Station Crossing project was a four-story, wood-framed structure over slab-on-grade construction.

This 110,000 ft2 project consisted of 110 apartment units and was completed on schedule after a 14-month construction period.

The project is located on a Brownfield site and is situated at the Lamar Light Rail Station in Lakewood.

 

Total: 110,000 ft2
Owner:
Metro West Housing Authority
Engineer: 
Humphries Poli Architects
Award: LEED Gold Certified

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Lincoln Meadows Senior Living

This build, designed primarily as a senior residence, incorporates an independent living wing which houses 64% of the residents.

The center also contains an assisted living and memory care wing, which houses the remaining 36% of the residents.

We made sure this senior center would have all the amenities a resident would need, including: libraries, dining halls, community lounges, a private theater room, a beauty salon, outdoor gazebos and gardens.

 

Total: 190,431 ft2
Owner:
Spectrum Retirement Communities
Architect: MOA Architecture

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2300 Welton

We completed this 257,000 ft2 affordable housing development in Denver, Colorado in 16 short months. The build consisted of two apartment buildings with 233 units, and participated in the Enterprise Green Communities (an accreditation process similar to that of the LEED process).

The transit-oriented project featured two-stories of underground parking and was constructed on a zero lot line site, directly on the light rail line, which required extensive shoring around the entire perimeter.

Throughout this project we had the opportunity to coordinate and think logistically, given the ROW limitations along Park Avenue and Welton Street.

 

Total: 232,000 ft2
Owner:
2300 Welton, LLC
Architect: Humphries Poli Architects

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Stevinson Lexus Fredrick Dealership

Calcon built this Lexus dealership for Stevinson Automotive Group in Frederick, Colorado.

The showroom finishes are of the highest quality, featuring granite countertops throughout the space and in the restrooms as well.  Cherry wood trim, wood paneling and custom-designed millwork were used in the customer areas.

A custom-designed cherry wood storefront system highlights the interior of the sales and management offices. Colorado sandstone was utilized in large slabs for the hearths and mantles of the large two-sided, custom-designed fireplace.


Total:
71,000 ft2
Owner:
Stevinson Automotive Group
Architect: SEM Architects, Inc.

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Stevinson Toyota West Dealership

In just 14 months, Calcon constructed this 111,210 ft2 Toyota dealership in Lakewood, Colorado for the Stevenson Automotive Group.

This build included a new showroom, a service center, parts storage, a car wash and a massive stone fireplace made with Colorado sandstone.

During the process, special attention was given to the routing of the mechanical, electrical and plumbing systems throughout each shop.

We also installed a central hanger system to support all piping into one central area, creating a clean appearance in both shops.

Our team also incorporated in-ground hoists and wall mounted workbenches to the shop areas, adding to the open, light feel of the service shops.

 

Total: 111,210 ft2
Owner:
Stevinson Automotive Group
Architect: SEM Architects, Inc.

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Stapp Toyota Dealership

Calcon built this Toyota dealership in Frederick, Colorado for Stapp Toyota.

We used our eye for design when it came to the front of the south-facing façade, which is made up of ACM metal panels fabricated in “Toyota Silver.” These panels also make up the exterior of the service breezeway and the new car delivery area.

Half of the service stalls contain in-ground lifts, workbenches and convenience power with telephone data at each stall. There is also an off-road car display located on the west end of the property, which was built using boulders and road-base, giving it a rugged feel.

 

Total: 48,750 ft2
Owner:
Stapp Toyota
Architect: SEM Architects

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High Country Honda Dealership

Our team build this Honda dealership for owner David McDavid in Glenwood Springs, Colorado.

The dealership contains a combined 9,117 ft2 of showroom and office space, two locker rooms and two break rooms for the employees.

The shop and repair garage are equipped with a vehicle exhaust system, six above-ground lifts and an alignment rack/lift.

The owner's office has a large exterior patio with a great view of the Colorado River.

 

Total: 23,500 ft2
Owner:
David McDavid
Architect: 
SEM Architects, Inc.

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Westerra Plaza

This project was all about cohesion, as it consisted of multiple connected retail stores and a core-shell build for Westerra Credit Union. The facility has a two car drive-thru and an underground storm detention system that feeds into a landscaped rain garden.  The plaza was completed with a large patio on the southeast side of the building, overlooking Union Boulevard.

 

Total: 16,000 ft2
Owner:
Westerra Credit Union
Architect: 
Farnsworth Group, Inc.

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Home

Slide background

Four points at
steamboat springs

Located at an elevation of 10,000 feet in Steamboat
Springs, this 14,000 SF lodge was constructed in a
period of 203 days.

LEARN MORE
Slide background

The Daniel L. Ritchie Wellness and
Sports Center at University of Denver

This Ace Award winning project, totaling 450,000 SF, consisted of building the
Burns Ice Arena, Hamilton Gymnasium, Magness Arena, William Bell Tower,
Marion Gottesfeld Room, El Pomar Natatorium, and the Gates Field House.

LEARN MORE
Slide background

Sky Ridge Medical Campus

Totaling 590,110 SF, this build included medical office buildings,
multiple specialty medical facilities and even a 1,000 vehicle
parking structure.

LEARN MORE
Slide background

2300 Welton

Located in Denver, CO, this transit oriented development affordable
housing apartment building totals 257,000 SF and includes 2 stories of
underground parking.

LEARN MORE
Slide background

Fortune 100 Data Center

Located in Colorado Springs, CO, this 290,900 SF project consisted
of a new Dater Center building, a remodel of an existing server room,
a power distribution unit and a well.

LEARN MORE
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In my 31 years of experience as a construction manager, I have found very few general contractors that are in the same league as Calcon… I recommend them without any reservation.”

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Four points at
steamboat springs

Located at an elevation of 10,000 feet in Steamboat
Springs, this 14,000 SF lodge was constructed in a
period of 203 days.

LEARN MORE
default gravatar

In my 31 years of experience as a construction manager, I have found very few general contractors that are in the same league as Calcon… I recommend them without any reservation.”

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Next >>

Calcon Constructors is proud to be part of Colorado’s construction community. From day one, Calcon has consistently applied integrity, innovation, and insight throughout its business practices, enabling the company to thrive. This is due, in no small part, to the solid business principles of our founders; our extensive knowledge, passion and commitment to giving back to our communities has allowed us to perpetuate and enhance the Rocky Mountain lifestyle, environment and beauty of our home state.

We Build:
On our relationships with people, With Colorado communities at heart, Strong teams. Strong teams build wonderful projects, A balanced focus on value and safety, With the future in mind, On our relationships with people, With Colorado communities at heart, Strong Teams. Strong teams build wonderful projects, A balanced focus on value and safety, With the future in mind,

Construction isn’t for amateurs. There’s a multitude of companies to choose from, so how do you select the one that will ensure that your project receives the highest standards of planning, execution, attention to detail and service?

With countless construction professionals vying for the same clients and projects, many deliver the same mundane messages—“We build better buildings,” “We build quality,” or “Building the future.” So, you might wonder, “How are any of these companies different from one another?” More importantly, you might ask, “How will I know that this construction company will go the extra mile to complete my project and give it the kind of attention it requires?”

Enter Calcon Constructors. At Calcon, we don’t just deliver a message—we operate by it. We’ve been in the construction business for over a quarter-century and, in that time, we’ve developed and fine-tuned a sophisticated strategy that harnesses everything a construction company should embody and practice—an established reputation, a passion for the communities built within, pride in performance, leadership through innovation and providing exceptional quality without sacrificing safety.

WHY CALCON

From the initial discussion of planning your projects to assembling the highest quality team, across every aspect of the project, our talented professionals drive cost-effective solutions on your behalf.

ABOUT US

We do what we say and more. In constantly striving to go above and beyond for our clients, we serve their needs by providing innovative solutions, tailored services, and a premier experience.

OUR PROJECTS

We have helped hundreds of clients design and execute project solutions all across the Front Range. With experience spanning a variety of industries, learn how we can support you.

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