At EP Plumbing, Heating & Air, we've spent years working alongside builders, general contractors, and homeowners across the St. Vrain Valley and the Front Range. We know how Longmont projects come together, how local inspectors think, and how to keep a job moving on schedule. From blueprint review to the final fixture set, we install complete water, drain, and gas systems that are built to pass inspection and last.
New Construction Plumbing Services We Offer in Longmont
From a single-family home in a new subdivision to a commercial buildout, we handle every stage of the plumbing. We read the blueprints, pull the permits, install the systems, and coordinate with your crew so nothing falls through the cracks.
Plumbing System Design and Rough-In Installation
Everything starts on paper. We review your blueprints, talk through fixture locations, and map out the most efficient pipe layout for your build. Then we handle the plumbing rough-in Longmont builders count on, setting the drain, waste, and vent lines and water supply piping inside walls and floors before anything gets closed up.
Good design saves money later. We think about pipe sizing, venting, and access before we ever cut a pipe, so your system works right the first time.
Water Supply and Distribution Line Installation
Clean, pressurized water needs to reach every fixture in the building. We install water supply lines sized correctly for the home or facility, whether that's hot and cold runs to a kitchen and three baths or a full commercial water distribution system. We pressure test every line so you know it's tight before the walls go up.
Drain, Waste, and Vent (DWV) System Installation
The DWV (drain-waste-vent) system is the backbone of any plumbing job. It carries waste out and lets air in so drains flow smoothly and gases vent safely. We install DWV piping with proper slope, venting, and cleanout access, all laid out to match your plans and meet Colorado plumbing codes.
Fixture and Appliance Hookups
After the walls and floors are finished, we come back for the trim-out, the fixture set. This is where the building really comes to life. We install and connect:
- Sinks, faucets, and toilets
- Tubs and showers
- Dishwashers and disposals
- Washing machine hookups
- Outdoor hose bibs
Everything gets tested for leaks and proper operation before we call it done.
Gas Line Installation for New Builds
Need gas for a range, furnace, water heater, or fireplace? We install and test gas piping to code, with proper sizing and leak detection. It's one of the areas where cutting corners simply isn't an option, and we treat it that way.
Water Heater and Tankless System Installation
We install traditional tank water heaters and modern tankless systems that save space and energy. We'll help you weigh the options based on your household size, hot water demand, and budget, then install a unit that's ready for years of Colorado winters.
Residential
Residential new construction plumbing in Longmont covers full new home plumbing installation, kitchen and bathroom plumbing, laundry rooms, water heaters, supply and DWV systems, gas piping, and the final fixture install. We also handle plumbing for home additions in Longmont, including ADUs, basement finishes, garage apartments, and new kitchens or baths. We match your extension to the existing system and pull the right permits.
Commercial
On the commercial side, we work as a commercial plumbing contractor in Longmont on office buildings, retail spaces, restaurants, warehouses, tenant improvements, and mixed-use developments. Commercial construction plumbing means bigger distribution systems, larger sewer lines, and close coordination with architects and engineers, all things we handle every day.
How the Process Works
- Blueprint review and plumbing design: We study the plans and plan the layout.
- Permit approvals: We pull the permits your project needs.
- Underground and slab plumbing: Lines go in before the slab pours.
- Rough-in installation: We set DWV and water supply lines in walls and floors.
- Pressure testing and rough inspection: Everything gets tested and inspected.
- Wall and floor completion: Your crew closes things up.
- Fixture set and final inspection: We trim out and pass the final.
Staying in sync with your builder at each stage is what keeps a project on schedule and on budget.
What Affects the Cost
Every build is different, so we don't quote guesswork. Costs depend on things like:
- Home or building size and number of bathrooms
- Fixture and water heater selections
- Gas piping needs
- Foundation type, slab, crawl space, or basement
- Residential vs. commercial scope
- Custom features and permit requirements
We evaluate your construction plans and plumbing specs, then give you a clear, upfront estimate with no surprises.
Why Choose EP Plumbing, Heating & Air Services in Longmont
- We're local and we know Longmont. Our team understands Front Range weather, sudden temperature drops, and the long heating seasons that put real stress on your system.
- We're licensed and insured. Every EP Plumbing, Heating & Air technician is licensed and insured in Colorado, background checked, and trained to respect your home. We leave every job site clean.
- We give honest advice. We won't push a replacement when a repair will do. You get straight answers and upfront pricing with free estimates before work begins.
- We respond fast. With 24/7 emergency service and same-day appointments when possible, we're here when you need us. When you call, you talk to a real professional who takes your problem seriously.