About the area
Where the Tree Section sits
Local real estate guides place the Tree Section between Rosecrans Avenue on the north and Manhattan Beach Boulevard on the south, with Sepulveda Boulevard on the east and the Sand Section on the west. Its street names are mostly trees. Walk Score counts about 9,950 residents in the neighborhood.
One guide describes lots of roughly 4,400 to 5,400 square feet, with a mix of original post-war homes of about 1,500 square feet and newer homes near 3,200 square feet. That is a real estate description from a few years back, so it is a general picture and not a survey.
Why this area has a lot of planned plumbing work
When an older home is expanded or replaced, the plumbing plan changes with it. A new bathroom needs drain and vent routes, a larger kitchen may need new supply lines, and a bigger house often needs a larger water heater or a tankless unit.
Plumbing in California follows the California Plumbing Code, which is based on the Uniform Plumbing Code (UPC), and local rules can add to it. That is general information and not a claim about any street. If you are planning work, read our plumbing installation page, and ask the Manhattan Beach Community Development or building department what permits your job needs.
Jobs we hear about in the Tree Section
Water heater swaps
A tank that leaks or no longer heats needs water heater replacement. New installs here should include earthquake strapping.
Tankless upgrades
A larger household may want a tankless water heater. Sizing depends on how many fixtures run together and on the gas line.
Whole-house pipe work
Rust-colored water, low pressure or repeated pinhole leaks may point to repiping. A pressure test and a look at the pipe material come first.
Kitchen and bath fixtures
Faucets, toilets and disposals fail in every neighborhood. See faucet repair and toilet repair.
If you smell gas near a water heater
A gas water heater is a common reason for a call. If you smell gas, safety comes before the repair.
- Leave on foot first.
Go outside before you call. Do not use a phone near the leak.
- Avoid sparks and flame.
Do not switch lights or appliances, use a garage door opener or start a vehicle. Do not try to turn valves or repair anything.
- Call from a safe distance.
Call SoCalGas at 1-800-427-2200, or 911 if life or property could be at risk. Our line can follow up once the gas company has made it safe.
Planning plumbing work in the Tree Section?
Call and describe the job. We will say what a visit involves and what to expect on price.
Local water note
Hard water matters for the water heater here
The City of Manhattan Beach supplies water from locally pumped groundwater blended with treated imported water. The City's 2023 Annual Water Quality Report gives total hardness averaging 392 mg/L for groundwater and 136 mg/L for the imported supply, which is roughly 23 and 8 grains per gallon. The blend at your tap changes with the day.
Harder water leaves more scale in a tank and on a tankless heat exchanger. A periodic flush and a look at the anode rod help, and our water softener and filtration page covers when a softener makes sense. This is general information about the system, not a claim about your house.
Sources: Manhattan Knolls, Manhattan Beach areas (real estate guide), MB Confidential, neighborhoods (real estate site), Walk Score, Tree Section
On the map
Tree Section in Manhattan Beach
FAQs
Tree Section plumbing questions
Local guides place it between Rosecrans Avenue and Manhattan Beach Boulevard, west of Sepulveda Boulevard and east of the Sand Section. Its street names are mostly trees. No official boundary map is cited here.
Often it does. A new bathroom needs drain and vent routes, and a larger house may need a bigger water heater. Ask the building department what your project requires, and expect a plumber to check the existing lines first.
The City's 2023 report lists total hardness of about 392 mg/L for groundwater and 136 mg/L for imported water. Hardness at your tap depends on the blend, so the number varies. Scale builds faster at the higher end.
California Health and Safety Code 19211 requires residential water heaters to be braced, anchored or strapped against earthquake motion, and a replacement should include it.
Yes. A camera on the sewer lateral before closing is common. See sewer camera inspection for what it shows.
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