Montgomery County · Bethesda, MD
Plumbers in Bethesda, MD
Bethesda is in Montgomery County, Maryland. About 87,000 people live in the 11 ZIP codes we cover here, in roughly 37,000 homes, 59% of them single-family detached houses. The biggest share of the housing was built between 1960 and 1979 (29%), and that age decides most of what goes wrong with the plumbing.
- Same-day service when a plumber is available
- 11 ZIP codes covered
ZIP codes we cover in Bethesda
20810, 20811, 20813, 20814, 20816, 20817, 20824, 20827, 20889, 20892, 20894
Bethesda homes and their plumbing
Here is how Bethesda's homes break down by year built, based on Census estimates for the covered ZIP codes: before 1940 6%, 1940–1959 29%, 1960–1979 29%, 1980–1999 16%, 2000 or later 21%. With that many older homes, original galvanized supply pipe and cast iron or clay drains are still common, so leaks, rust and root intrusion come up often. Neighboring areas such as Potomac, Silver Spring, Rockville are covered too.
| Year built | Share of homes |
|---|---|
| Before 1940 | 6% |
| 1940–1959 | 29% |
| 1960–1979 | 29% |
| 1980–1999 | 16% |
| 2000 or later | 21% |
Share of housing units in the covered ZIP codes. Census ACS 2023 5-year estimates.
- Residents in covered ZIPs
- 86,851
- Housing units
- 36,553
- Single-family detached
- 59%
- Owner-occupied
- 70%
- Heated with utility gas
- 65%
- Heated with electricity
- 31%
What goes wrong in Bethesda homes
Pre-1960 homes: galvanized pipe and cast iron
35% of homes in Bethesda's covered ZIP codes were built before 1960. Houses that old often still have galvanized steel supply lines that rust closed from the inside, and cast iron or clay sewer pipe that cracks and lets roots in. Weak pressure at upstairs fixtures, brown water after a shutoff and slow drains are the usual clues. Typical fixes are whole-house repiping and a sewer camera inspection.
Natural gas in most homes
65% 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.
1960s and 70s homes reaching end of life
29% of the housing here dates from 1960 to 1979. Original copper supply lines in those homes are now 45 to 65 years old, and cast iron drains of that age scale up inside and crack. Seized shutoff valves, pinhole leaks and recurring main-line clogs are common calls. A camera inspection shows the condition of the sewer line before anyone digs.
Winter freezes
64% of homes here were built before 1980, when pipes were more often run through exterior walls and uninsulated crawl spaces. In a cold Maryland winter those are the lines that freeze and split. See frozen and burst pipe repair.
Common calls in Bethesda
- Whole-House Repiping
- Gas Line Repair in Bethesda, MD
- Sewer Camera Inspection
- Frozen & Burst Pipe Repair
- Water Heater Replacement
- Drain Cleaning
- Main Water Line Repair
- Sewer Line Repair
Also available in Bethesda: emergency plumbing and every plumbing service.
Bethesda at a glance
- County
- Montgomery County
- Nearest city pages
- Potomac, Silver Spring, Rockville
- ZIP codes
- 20810, 20811, 20813, 20814, 20816, 20817, 20824, 20827, 20889, 20892, 20894
Bethesda plumbing FAQ
How old are the homes in Bethesda?
In the ZIP codes we cover around Bethesda, Census estimates put 35% of homes as built before 1960, 29% from 1960 to 1979, 16% from 1980 to 1999 and 21% in 2000 or later. The largest group is 1960–1979 (29%).
Who licenses plumbers in Bethesda, MD?
The Maryland State Board of Plumbing licenses plumbers and gas fitters; check a license through the Maryland Department of Labor.
Are water heaters in Bethesda usually gas or electric?
Census data for the area show 65% of homes heating with utility gas, 31% with electricity. Water heaters often use the same fuel as the home's heat, so utility gas is the most common here, but check the label on your tank before you shop for a replacement.
Guides for Bethesda homeowners
Nearby areas
Also covered nearby: Glen Echo (2 mi), Chevy Chase (2 mi), Cabin John (3 mi), Kensington (4 mi), Garrett Park (4 mi), Takoma Park (6 mi), Suburb Maryland Fac (8 mi), Mount Rainier (9 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 Bethesda, so they may include neighboring communities that share those ZIP codes.
Need a plumber in Bethesda?
Same-day service when a plumber is available. One call connects you with a licensed plumber who serves your ZIP.