3rd Gen Garage Doors
Licensed, Bonded & Insured(720) 697-0418
Denver Metro Commercial Garage Doors

Commercial Garage Doors in Denver, Installed and Repaired Right

Install, replacement, and fast repair for warehouses, shops, and commercial buildings across the Denver metro. Family owned, three generations in the trade. Call now or request a free estimate.

Free on-site estimatesSame-day service availableLicensed, bonded & insured
Free Commercial Estimate

Get Your Free Quote

Tell us about your door or building. We respond fast during business hours.

Prefer to talk now? (720) 697-0418
Free On-Site EstimatesSame-Day Service AvailableAll Door Types & BrandsA+ BBB Accredited
Why Denver Businesses Call 3rd Gen

Commercial Door Help Without the Runaround

Clear quotes, fast scheduling, and workmanship that holds up to heavy daily use.

Free On-Site Estimates

No-cost, no-obligation quotes on new and replacement commercial doors.

Fast, Same-Day Help

Urgent commercial repairs handled quickly, with same-day service available.

Licensed & Insured

Fully licensed, bonded, and insured, with COIs for GCs and property owners.

Every Door & Brand

Sectional, rolling steel, roll-up, and high-speed doors from all major brands.

What We Handle

Commercial Garage Door Services

Install, replace, repair, and maintain every common commercial door system.

New Installation

Commercial doors specified and installed for new builds and tenant improvements.

Replacement & Upgrades

Swap out aging or damaged doors for modern, secure, efficient systems.

Sectional & Overhead

Insulated and non-insulated sectional doors for bays, shops, and service buildings.

Rolling Steel & Roll-Up

Rolling steel, roll-up, and high-speed doors built for heavy daily use.

Operators & Access

Commercial openers, operators, and access controls sized to your door.

Repair & Maintenance

Fast repair on springs, cables, tracks, and operators, plus preventive service.

Our Work

Real Commercial Projects Across Denver

Doors we have installed and serviced for Denver metro businesses.

Commercial steel garage doors installed by 3rd Gen in the Denver metro
Warehouse garage door installation by 3rd Gen Docks & Doors
Dual commercial garage door install by 3rd Gen Docks & Doors
See the Difference

From Worn Out to Working Like New

A recent door replacement, before and after.

Damaged garage door before replacement by 3rd GenBefore
New garage door after installation by 3rd GenAfter

Door Down or Planning an Install? Talk to Us Now.

A real third-generation specialist answers Monday to Friday, 6am to 6pm, and Saturday mornings.

What Clients Say

Rated 5 Stars by Denver Businesses

Verified Google reviews from real commercial and residential projects.

We hired Sean and his team to install 4 garage doors on our 10,000 square foot tube steel building. Was referred to Sean by the steel building company we worked with. Couldn’t be happier with the result.
Sheala Gatz, Verified Google Review
Very good work. Easy company to work with. Installation crew very professional and hard working. Would recommend to any neighbor or friend.
Daniel Savage, Verified Google Review
Sean made installing our new garage door seamless. His communication was excellent, and the project went smoothly from start to finish. Will definitely use again.
Janae Champlin, Verified Google Review
Service Area

Serving the Denver Metro

Same-day appointments available across the metro.

DenverGoldenAuroraLakewoodArvadaWestminsterThorntonCommerce CityCentennialLittletonEnglewoodHighlands RanchCastle RockParkerBroomfieldColorado Springs
Quick Answers

Commercial Door FAQ

The things businesses ask before they call.

Are estimates really free?

Yes. We provide free, on-site estimates on new and replacement commercial doors, with a clear written quote before any work is scheduled.

Can you come out same day?

For urgent commercial repairs we offer same-day service in many cases and 24/7 emergency help when a door goes down after hours. Call and we will schedule you as fast as the route allows.

Are you licensed and insured?

Yes. 3rd Gen is licensed, bonded, and insured for commercial work across the Denver metro, with BBB A+ accreditation, and we provide certificates of insurance on request.

What doors and brands do you handle?

Sectional, rolling steel, roll-up, high-speed, and insulated commercial doors from all major brands, including Clopay, Amarr, C.H.I. Overhead, Wayne Dalton, LiftMaster, and Genie.

Free Commercial Estimates

Get Your Commercial Door Quote Today

Call now to talk to a specialist, or request a free estimate and we will get right back to you.

Call Now