Colorado · 7 covered places · 10 ZIP codes
Plumbers in Douglas County, CO
We cover 7 cities and towns in Douglas County, Colorado, across 10 ZIP codes, including Parker, Castle Rock, Lone Tree. About 252,000 people live in those ZIP codes. 58% of the homes were built in 2000 or later, so most calls are about water heaters, fixtures and clogs rather than old pipe.
| Year built | Share of homes |
|---|---|
| Before 1940 | 1% |
| 1940–1959 | 1% |
| 1960–1979 | 8% |
| 1980–1999 | 33% |
| 2000 or later | 58% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
| Place | Residents in covered ZIPs | Built before 1960 |
|---|---|---|
| Parker | 113,756 | 1% |
| Castle Rock | 99,741 | 2% |
| Lone Tree | 22,472 | 0% |
| Larkspur | 5,950 | 4% |
| Franktown | 5,393 | 5% |
| Sedalia | 4,333 | 22% |
| Louviers | 258 | 95% |
What goes wrong in Douglas County homes
Newer homes on their first water heater
58% of homes here were built in 2000 or later. Those houses usually have PEX or CPVC supply lines in good shape, so the work is on equipment: original tank water heaters past their 8 to 12 year service life, expansion tanks, pressure regulators and fixtures. See water heater replacement.
Natural gas in most homes
73% of occupied homes here heat with utility gas, so gas water heaters, ranges and dryers are common. That means gas line extensions for new appliances, flexible connector replacements and venting checks when a water heater is swapped. If you smell gas, leave first and call the gas utility from outside. See gas line repair.
1980s and 90s construction and polybutylene
33% of homes were built between 1980 and 1999. Polybutylene supply pipe was installed widely in US homes from about 1978 to 1995, so houses from these years are worth checking for gray plastic pipe stamped PB2110, usually visible at the water heater or under sinks. Insurers and buyers often ask about it. See polybutylene replacement.
Long, hard winters
10% of homes here were built before 1980, when pipes were more often run through exterior walls and uninsulated crawl spaces. In a long Colorado winter those are the lines that freeze and split. See frozen and burst pipe repair.
Common plumbing work in Douglas County
City pages in Douglas County
Other covered towns in Douglas County
- Castle Rock (3 ZIPs)
- Franktown (1 ZIP)
- Larkspur (1 ZIP)
- Lone Tree (1 ZIP)
- Louviers (1 ZIP)
- Sedalia (1 ZIP)
Douglas County plumbing FAQ
Which towns in Douglas County do you cover?
7 places: Castle Rock, Franktown, Larkspur, Lone Tree, Louviers, Parker, Sedalia. Enter your ZIP code to confirm coverage for your street.
How old are homes in Douglas County?
Across the covered ZIP codes, Census estimates put 2% of homes as built before 1960, 8% from 1960 to 1979, 33% from 1980 to 1999 and 58% in 2000 or later.
Who licenses plumbers in Douglas County, CO?
Colorado's State Plumbing Board, part of the Division of Professions and Occupations, licenses plumbers; most jurisdictions also require permits.
Housing and heating figures are US Census Bureau ACS 2023 5-year estimates for the ZIP code areas we cover in Douglas County, combined across places and weighted by housing units. Some ZIP codes extend into neighboring counties.
Need a plumber in Douglas County?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.