Where Old Mountain View is
The Old Mountain View Neighborhood Association describes its area as bordered by El Camino Real, Shoreline Boulevard, Evelyn Avenue and Highways 85 and 237. It contains more than 2,400 residences and the downtown business district.
Castro Street is the main corridor, with restaurants and cafes. Pioneer Memorial Park is near the Center for the Performing Arts, and Eagle Park has a large field and an outdoor pool.
The association's own description of the housing is short: grand Victorian homes and quaint cottages. It gives no construction dates, so this page does not claim a build year for any street.
Leak or backup in an Old Mountain View home? Call to ask about help.
Call (650) 860-1670Why older homes ask different plumbing questions
This section is general plumbing information. Houses with a long history often have a mix of original and replaced plumbing. Over decades, rooms get added, kitchens are moved and pipes are patched, so the material behind one wall may not match the next.
The way to learn what you have is to look, not to guess. A sewer camera inspection shows the condition of the lateral, and a plumber can check visible supply lines for material and wear. If supply pipe turns out to be failing, repiping is the permanent answer.
Slow drains in older kitchens and baths often come from buildup in a long, many-bend run. Drain cleaning clears it, and a plumber can tell you if something stronger is needed when cabling keeps failing.
| Item | Status | Note |
|---|---|---|
| Boundaries | Verified | Per the neighborhood association: El Camino Real, Shoreline Boulevard, Evelyn Avenue, Highways 85 and 237 |
| Housing character | Verified | Victorian homes and cottages per the association |
| Build years | Unknown | The association page gives none |
| Pipe material on your street | Unknown | Needs an inspection of your own home |
Fixtures and water heaters
Older bathrooms often keep original layouts, which can limit where a new toilet, vanity or shower valve fits. See faucet repair for fixes that do not need the wall opened.
When a water heater fails, the permit rule applies here too. The City of Mountain View requires a permit for replacement, so water heater replacement should include it.
A note on Old Mountain View
If your building is mixed use or has a shared line with a neighbor, say so when you call, because it changes who is responsible for which pipe.
Details here come from public sources reviewed in October 2026, and the association page notes a gap in its own posts from 2012 to 2020.
For the rest of the city, see the Mountain View plumbing home page and the service area page.
Old home, new plumbing question? Call (650) 860-1670.
Call (650) 860-1670Old Mountain View plumbing questions
Where is Old Mountain View?
Around downtown Mountain View and Castro Street, bordered by El Camino Real, Shoreline Boulevard, Evelyn Avenue and Highways 85 and 237 per its neighborhood association.
How old are the homes?
The association describes Victorian homes and cottages but gives no dates. A county record or a home inspection is the way to find your own house's year.
Should I camera-inspect the sewer line of an older home?
It is a sensible step before a purchase or after repeat backups. See sewer inspection.
Is this site located in Old Mountain View?
No. It is a phone enquiry line with no office listed. Call (650) 860-1670 to ask about help at your address.
Who is responsible for the sewer lateral?
The City of Mountain View's water and sewer FAQ places the lateral on the property owner and the main on the City.