A mailing name is not a boundary

Several ZIP codes near Northglenn, including some listed with a Denver place name, include addresses in unincorporated Adams County or other cities. A postal label does not show which city or utility serves a house. For a water loss, that matters because the office for a water main, a sewer line or a permit depends on where the property lies in law, not on the mailing address.

Within the City and County of Denver proper, older neighborhoods have brick bungalows, mid-century ranches and small commercial buildings. Houses there can have older clay or cast-iron sewer lines and plaster walls, all of which affect backups and drying.

Which office to ask

If your address is in
City and County of Denver
Likely first contact for utilities and permits
Denver's water and permitting offices
If your address is in
Unincorporated Adams County
Likely first contact for utilities and permits
Adams County offices; ask which utility serves the address
If your address is in
Northglenn, Thornton or another city
Likely first contact for utilities and permits
That city's utilities and building offices

Reading older neighborhoods

Older city neighborhoods often have lath-and-plaster walls, original hardwood floors and cast-iron or clay drain lines. Plaster dries slowly and may contain materials that call for testing before demolition, so ask how a contractor handles that question before any cutting starts.

Basements in older houses may have stone or brick foundation walls that seep in wet seasons. Distinguish between a one-time plumbing event and chronic seepage, because the remedy and the insurance picture are different.

Keep receipts for any emergency steps you take, and write down the readings you are given along with the date. Those numbers show whether a space is trending dry and give you something concrete to discuss with an adjuster.

Steps to learn your jurisdiction

  • Check your property tax or assessor record for the taxing district.
  • Look at your water or sewer bill for the utility's name.
  • Ask your insurer or agent which jurisdiction they list.
  • Call the nearest city office and confirm.

Questions for homes with older sewer lines

  1. Has the sewer line been inspected with a camera?
  2. Do tree roots or old clay pipe appear in the report?
  3. Is a backwater valve installed?
  4. Where is the cleanout, and is it accessible?
Map of North Denver. It shows an area, not an office or a job site.

Common questions

Why do some Adams County addresses say Denver?

ZIP codes are mail routes and do not follow city or county lines.

Does it matter which jurisdiction I am in?

Yes, for permits, utilities and who handles main-line problems.

General information for Northglenn, not a quote or professional advice. In an emergency, call 911.