Who owns what
| Part | Who is responsible | Source |
|---|---|---|
| Pipe from the house to the property line | Owner | City sewer utility page |
| Pipe in the right-of-way or easement, to the main | Owner: "the entire service connection" | BMC 15.12.060(E) |
| The connection at the main | Owner | City sewer utility page |
| The City main in the street | City | City sewer utility page |
| Damage from blockage or deterioration up to the main | The City "shall not be liable" | BMC 15.12.060(E) |
The City's sewer utility page puts it plainly: "The City, by ordinance, is not responsible for the operation, maintenance or repair of wastewater side services." When you report a backup, Public Works crews check the main; if it flows freely above and below your line, the City treats the problem as yours and contacts you to repair it. City smoke testing and video inspection also turn up defects such as roots and holes in private lines, and owners "are made aware" of them.
What the code requires of the work
BMC 15.12.060 sets three rules:
- A state-licensed contractor. "The connection to the city system shall be done by a contractor licensed to do such work by the state." Check the Washington L&I contractor registration before you sign; see checking a contractor license in Washington.
- Accepted materials. Everything used must be accepted for use on the City system.
- Inspection before backfill. "The connection to the city system shall not be covered until inspected and approved by the department of public works."
Connections are approved through a Public Works permit (BMC 15.12.040), applied for by the owner or an authorized agent, which in practice is your contractor. If the repair reaches the street, ask whether pavement restoration is in the bid.
What 267 side sewer permits show
| Measure | Bellingham side sewer |
|---|---|
| Permits on homes, October 2023 to September 2026 | 267 |
| Firms on those permits | 58 |
| Firms active in the last 12 months | 30 |
| Share held by the busiest firm | 40.8% |
| Share held by the five busiest | 63.7% |
| Firms with a single permit | 35 (60.3%) |
| Permits that reached a final | 77.7% |
| Usual days from issue to final | 369 |
| Firms with an active state license match | 70.7% |
| Firms whose matched license is expired, suspended or similar | 10 |
| Busiest / quietest month | October (148) / February (76) |
This is one of the most concentrated trades in our Bellingham file. Boss Construction Inc filed 42 side sewer permits in the last 12 months; the five busiest firms hold 63.7%, and 60.3% of firms filed just one.
Two numbers are worth asking about. The usual permit stayed open 369 days, much longer than the dig; and 10 of the 58 firms had a matched license that was no longer active. Ask who schedules the final inspection, and check the registration on the day you sign.
Permits peak in October and are fewest in February.
Compare Bellingham side sewer contractors by permits →
Check it in five minutes
- Look the contractor up on Washington L&I's contractor search and confirm it is active and bonded.
- Find it on our Bellingham side sewer list and look at its finished share and recent permits.
- Look up past permits on your address in eTRAKiT; see Bellingham building permit search.
- Ask for the camera-inspection video before agreeing to a full replacement over a spot repair.
Permit timing for other Bellingham trades is on how long a Bellingham permit takes.
What this does not tell you
Bellingham side sewer permits carry no filed value, so we cannot show what repairs cost. Our data does not separate spot repairs, full replacements and new connections. The City sewer page does not describe the permit fee or a cost-sharing program; the 2012 replacement agreement we cite was tied to one funded City project and ran to the end of 2013.
How we know this
Rules are quoted from the City of Bellingham's Wastewater / Sewer Collection Utility page and BMC 15.12.040 and 15.12.060, read 23 October 2026, and the City's 2012 side sewer replacement agreement template. Permit counts are City of Bellingham side sewer permits on homes, October 2023 to September 2026; license matches are to Washington L&I contractor records.
Numbers come from City of Bellingham permits on single-family homes, duplexes and townhomes, data through October 15, 2026. Nobody paid to be on this page and nobody can.
Questions
- Who is responsible for the sewer line from my house to the street in Bellingham?
You are. BMC 15.12.060(E) says 'The property owner is responsible for the maintenance of the entire service connection', including the part in the City right-of-way, and the City is not liable for blockage or deterioration up to the main.
- Will the City of Bellingham fix my sewer backup?
The City checks its own main first. If wastewater flows freely in the main upstream and downstream, the City assumes the blockage is in your side service and contacts you to make the repair. Report a backup to Public Works 24/7.
- Can I replace my own side sewer in Bellingham?
Not the connection to the City main. BMC 15.12.060(C) says it 'shall be done by a contractor licensed to do such work by the state', and it cannot be covered until Public Works has inspected and approved it.
- How long does a Bellingham side sewer permit take?
The work itself is usually days, but the usual Bellingham side sewer permit in our data stayed open 369 days from issue to final, and 77.7% of permits reached a final. Ask your contractor to schedule the final inspection, not just the cover inspection.
- Does Bellingham pay to replace side sewers?
Only on City projects. A 2012 Public Works agreement had the City replace side sewers at no cost to owners on a project to cut stormwater inflow, contingent on funding. There is no standing assistance program on the City's sewer utility page; ask Public Works whether a project covers your street.
Build your own list
Every firm with that kind of permit on record. Pick what you value. The list moves.
Related guides
- Do I need a side sewer permit in Bellevue, WA? Repairs, replacements, the $216 and $757 fees and the inspection rules
- Do I need a permit to replace a sewer line? The rule in 9 departments, and how many get filed
- Bellevue contractor license lookup: L&I registration, the permit search, and what the permits show
- Bellingham ADU rules under the 2025 interim ordinance: two per lot, 1,000 sq ft, no owner occupancy, and what ADU permits show
- Do I need an HVAC permit in Dallas? The mechanical permit, who can pull it, and 8,582 permits
- Do I need a plumbing permit in Dallas? Licensed plumber or homestead owner, and 19,009 permits
For one city
- Wastewater / Sewer Collection Utility — City of Bellingham (accessed 2026-10-23)
- BMC 15.12.060 Sewer service installation — Bellingham Municipal Code (accessed 2026-10-23)
- BMC 15.12.040 Sewer service connections — Bellingham Municipal Code (accessed 2026-10-23)
- Side Sewer Replacement Agreement (2012 template) — City of Bellingham Public Works (accessed 2026-10-23)