Hays County · San Marcos, TX
Plumbers in San Marcos, TX
San Marcos is in Hays County, Texas. About 88,000 people live in the 2 ZIP codes we cover here, in roughly 36,000 homes, 39% of them single-family detached houses. The biggest share of the housing was built in 2000 or later (46%), and that age decides most of what goes wrong with the plumbing.
- Same-day service when a plumber is available
- 2 ZIP codes covered
ZIP codes we cover in San Marcos
78666, 78667
San Marcos homes and their plumbing
Here is how San Marcos's homes break down by year built, based on Census estimates for the covered ZIP codes: before 1940 3%, 1940–1959 7%, 1960–1979 16%, 1980–1999 29%, 2000 or later 46%. With so much newer construction, the plumbing itself is usually sound, and most calls are about water heaters, fixtures, pressure and clogs. Neighboring areas such as Kyle, Buda, New Braunfels are covered too.
| Year built | Share of homes |
|---|---|
| Before 1940 | 3% |
| 1940–1959 | 7% |
| 1960–1979 | 16% |
| 1980–1999 | 29% |
| 2000 or later | 46% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
- Residents in covered ZIPs
- 87,775
- Housing units
- 36,354
- Single-family detached
- 39%
- Owner-occupied
- 38%
- Heated with utility gas
- 22%
- Heated with electricity
- 74%
- Heated with propane
- 4%
What goes wrong in San Marcos homes
Newer homes on their first water heater
46% 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.
Mostly electric homes
74% of occupied homes here heat with electricity, and electric tank water heaters are the norm. Failed elements and thermostats are repairable, but tanks that leak need replacement. Heat pump water heaters are an efficient replacement where there's space and airflow.
1980s and 90s construction and polybutylene
29% 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.
Apartments, condos and attached homes
Only 39% of homes here are single-family detached houses. In attached buildings a leak or clog often involves a shared stack or a neighbor's unit, so it's worth knowing which lines are yours and which belong to the building or HOA, and where your unit's own shutoff is.
Common calls in San Marcos
- Water Heater Replacement in San Marcos, TX
- Polybutylene Pipe Replacement
- Drain Cleaning
- Water Softener Installation
- Main Water Line Repair
- Sewer Line Repair
Also available in San Marcos: emergency plumbing and every plumbing service.
San Marcos at a glance
- County
- Hays County
- Nearest city pages
- New Braunfels
- ZIP codes
- 78666, 78667
San Marcos plumbing FAQ
How old are the homes in San Marcos?
In the ZIP codes we cover around San Marcos, Census estimates put 9% of homes as built before 1960, 16% from 1960 to 1979, 29% from 1980 to 1999 and 46% in 2000 or later. The largest group is 2000 or later (46%).
Who licenses plumbers in San Marcos, TX?
Texas licenses plumbers at the state level; you can look up any plumber's license through the state's plumbing license search.
Are water heaters in San Marcos usually gas or electric?
Census data for the area show 22% of homes heating with utility gas, 74% with electricity and 4% with propane. Water heaters often use the same fuel as the home's heat, so electricity is the most common here, but check the label on your tank before you shop for a replacement.
I rent in San Marcos. Who pays for plumbing repairs?
About 62% of homes here are renter-occupied. In most cases the landlord is responsible for the building's plumbing, and tenants should report leaks right away and in writing. Damage a tenant causes, like a clog from something flushed, may be billed back. Your lease and Texas landlord-tenant law set the details.
Guides for San Marcos homeowners
Nearby areas
Also covered nearby: Maxwell (0 mi), Martindale (6 mi), Wimberley (12 mi), Geronimo (14 mi), Lockhart (15 mi), Kingsbury (17 mi), Driftwood (19 mi), Manchaca (19 mi).
Housing, heating and population figures are US Census Bureau American Community Survey 2023 5-year estimates for the ZIP code areas we cover in San Marcos, so they may include neighboring communities that share those ZIP codes.
Need a plumber in San Marcos?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.