Building a home out here on the Front Range is not the same as building in the middle of a city, and the plumbing is where that difference shows up first. Homes in Castle Rock, Franktown and Larkspur are often on their own private well and their own septic system, which means your water supply, your waste disposal, and everything in between all have to be planned, permitted and plumbed together, not treated as three separate jobs handled by three different crews who never talk to each other. That coordination gap is exactly where new-construction plumbing tends to go sideways in Douglas County.
Paramount Plumbing was built to close that gap. Patrick is a licensed master plumber who handles the well, the septic system, and the home's interior plumbing under one roof, one license, and one point of accountability. Most plumbers won't touch a well or a septic system, and most well drillers won't touch your home's plumbing, so you end up quarterbacking the handoffs yourself. We don't work that way. From the pressure tank in the well house to the last fixture in the primary bath, it's one licensed plumber who owns the whole system. We're local, licensed and insured, we price the job upfront before any work starts, and we're genuinely available 24/7. Call us at 719-888-3255.
Why New Construction Plumbing Is Different Out Here
When you build on well and septic, your plumber's job starts well before the first fixture. On the supply side, that means sizing and setting the pressure tank, running the line from the wellhead into the home, protecting the well house against Colorado winters, and making sure your flow rate can actually serve the number of bathrooms you're building. On the waste side, it means designing the drain, waste and vent system to feed a septic tank and leach field that are sized and permitted correctly for your home. Get any of that wrong and you find out at final inspection, or worse, the first winter you live there.
This is where having one licensed plumber on the well, the septic and the house pays off. When the same person who plumbed your fixtures also set your pressure tank and understands your OWTS layout, the whole system is designed to work as one. There's no finger-pointing between the driller, the septic installer and the plumber when something doesn't line up, because it's all us. If you're in the planning or framing stage of a build in Douglas County, this is the right time to call, before decisions get locked in that are expensive to undo. Reach us at 719-888-3255.
The Well, the Septic and the House, All Under One License
Septic in Colorado isn't a handshake job. On-site wastewater treatment systems are governed by Colorado's Regulation 43 and permitted at the county level through the Douglas County OWTS process, which means soil evaluation, proper tank and field sizing, setbacks from the well, and inspections at defined stages. A system that isn't designed and installed to that standard won't pass, and a failed or undersized septic system is one of the most expensive mistakes a new home can carry. Because we plumb the house and understand the septic side, we make sure your interior DWV design and your OWTS are speaking the same language from day one.
The well side deserves the same attention. Your pressure tank, pump wiring, pressure switch and the line into the home all have to be sized to your well's real output and protected from freezing, because a well house or a supply line that freezes in a Larkspur or Franktown winter can crack the tank and leave you without water in the cold. Having the plumber who set the tank also plumb the home means the pressure, the fixtures and the flow are all matched. One licensed master plumber, well to septic to fixture, is genuinely rare in this county, and it's the reason homeowners out here call us specifically. If that's the kind of continuity you want on your build, call 719-888-3255.
What New Construction Plumbing Costs in Douglas County
Honest answer first: new-construction plumbing is priced by the home, not by a flat sheet, so any real number depends on your square footage, the number of bathrooms and fixtures, whether you're on well and septic or on a tap, the run lengths, and the finish level you're building to. That said, homeowners want a ballpark, so here's a straight one. On the Front Range, full new-construction plumbing for a typical single-family home commonly lands in the rough range of 15,000 to 40,000-plus dollars for the interior rough-in and finish work, with well pressure-tank and supply work and a permitted septic system each adding meaningfully on top depending on scope and soil conditions. Larger custom homes and difficult sites run higher.
We price at the premium end because we do it right the first time with the correct materials, a licensed master plumber on the job, and a system engineered to pass inspection and last, not the cheapest bid that comes back to haunt you. What we won't do is lowball you to win the job and pad it later. Every Paramount job is priced upfront and approved before we start work, so the number you say yes to is the number you plan around. For an accurate, no-surprises price on your specific build, the exact figure is confirmed on-site after we see the plans and the property. Call 719-888-3255 to get that started.
Serving Castle Rock, Franktown and Larkspur
We're local to Douglas County and we know the ground here, from the rural parcels around Franktown and the higher, colder builds toward Larkspur to the growing custom-home neighborhoods around Castle Rock. That local knowledge matters more than it sounds. Freeze depth, well-house detailing, septic soil conditions and county permitting all vary across the Front Range, and a plumber who works here every week is going to anticipate the things that trip up out-of-area crews, like protecting supply lines and pressure tanks through a real Colorado winter and coordinating OWTS inspections with the county's schedule.
Paramount also does full service and repair, not just new construction, which means we're the same people you call after you move in, whether it's a frozen line at 2 a.m., a well pressure problem, a septic backup, or a fixture that needs attention. Because we're genuinely 24/7 and local, an emergency here reaches a licensed plumber who already knows systems like yours, not an answering service three counties away. Whether you're breaking ground or already living in the home, call 719-888-3255.
Frequently asked
Do you handle the well and septic, or just the plumbing inside the house?
All of it. Patrick is a licensed master plumber who handles the well-side work like your pressure tank and supply line, the permitted septic system, and the home's interior plumbing, all under one license. That's unusual, most plumbers won't touch wells or septic and most drillers won't touch house plumbing, but it means one person is accountable for your whole water and waste system. Call 719-888-3255 to talk through your build.
How much does new construction plumbing cost in Douglas County?
It depends on the home's size, fixture count, and whether you're on well and septic. As a rough Front Range ballpark, interior rough-in and finish commonly run 15,000 to 40,000-plus dollars, with well and septic work added on top by scope. We price at the premium end and do it right the first time. Every job is priced upfront and approved before work starts, and the exact figure is confirmed on-site. Call 719-888-3255 for an accurate number.
When in the building process should I call a plumber?
As early as possible, ideally during planning or framing. On well-and-septic builds, decisions about pressure-tank sizing, DWV layout and your OWTS design get locked in early and are expensive to change later. Bringing in one licensed plumber who coordinates the well, septic and house from the start prevents the handoff problems that cause failed inspections. Call 719-888-3255 while your plans are still flexible.
Are you available for emergencies after the home is built?
Yes. We're genuinely 24/7 and local to Douglas County, and we do full service and repair alongside new construction. So whether it's a frozen or burst pipe in a Larkspur winter, a well pressure issue, or a septic backup, you reach a licensed plumber who already understands well-and-septic homes out here. Call 719-888-3255 any time.