What makes downtown different
The City of Colton zones its downtown as Mixed-Use Downtown and General Commercial Downtown overlay. City code says architectural and site plan review applies to all development there, and projects must fit the Colton Downtown Design Manual.
A significant part of the historic downtown was demolished in 1953 to build the Ramona Freeway, now the San Bernardino Freeway. What remains is a smaller core, so buildings vary widely in age.
Housing downtown is growing on paper
A City environmental document for housing and rezoning describes a proposal to allow up to 40 dwelling units per acre in the Mixed-Use Downtown zone. It is a proposal, not a finished project, and we do not know what will be built.
If more apartments arrive above shops, shared plumbing becomes more common. Shared risers and drains behave differently from a single house's pipes.
Common plumbing questions by building use
General guidance for downtown property owners.
| Building use | Typical plumbing concern | What to ask |
|---|---|---|
| Restaurant or cafe | Grease in drains and floor drains | Grease management and cleanout access |
| Retail or office | Restrooms and water heaters | Fixture count and heater size |
| Apartment above shop | Shared drains and risers | Which unit is affected |
| Older storefront | Unknown pipe history | A camera inspection before repairs |
| Any building | Backflow and water meter questions | Ask the city water utility |
These are general commercial plumbing topics, not findings about specific downtown buildings.
Commercial plumbing basics
Commercial jobs often need more planning than a house call. A plumber needs to know the building use, the number of fixtures and who owns which part of the system. Shared systems can have more than one responsible party.
If work touches the water service or meter, the City of Colton Water Utilities Department is the contact. It serves about 90 percent of the city proper. Permits go through the Building Division at 659 North La Cadena Drive, (909) 370-5079.
Before you call for a downtown building
Having these details speeds up the conversation.
- Building use. Shop, restaurant, office, or mixed with apartments.
- Which tenant is affected. Say which unit or suite has the problem.
- Ownership. Know who is responsible, the owner or the tenant.
- Access. Give hours when the space is open.
- Plans. Check whether the work needs permits or design review.
A note on sources
Zoning and design review details come from the City of Colton municipal code. The 1953 freeway fact comes from a published encyclopedia entry. The density proposal comes from a City environmental notice. We do not claim any condition of specific downtown buildings.
Related help
See commercial plumbing for business jobs and drain cleaning or hydro jetting for stubborn lines. The service areas page lists nearby towns.
Frequently asked questions
Not mainly. The city zones it as mixed-use and commercial, and housing is part of the mix.
The city says architectural and site plan review applies to development in its downtown zones. Ask Planning whether your project counts.
The City of Colton Water Utilities Department serves about 90 percent of the city proper. Check your bill to be sure.
No. It appears in a City document as a proposal. We do not know the outcome.