On the BC coast, the drain season is driven by rain rather than frost. The southwest corner of the province, around Vancouver and Victoria, has mild, wet winters, and drain companies there often describe their busiest stretches in terms of storms rather than cold snaps. This guide is about turning that pattern into a marketing plan. The key idea is simple: plan from your own call records, prepare everything before the rain starts, and be careful what you say about rules you haven't checked. It is how we run drain campaigns for coastal clients.
Why your call log beats the forecast
General claims about seasonal drain demand are everywhere, and few of them come with evidence. We don't treat them as fact, and you shouldn't either. Your own records are better evidence for your area than any rule of thumb.
Here's how to read them:
- Export two years of calls from your phone system, dispatch software or job records. Include the date, the job type and the outcome.
- Group them by week. Weekly is better than monthly, because a single storm week can disappear in a monthly average.
- Split by job type: backups, routine clearing, camera inspections, perimeter or storm drain work, lateral repair.
- Mark the weeks with heavy rain, using any public weather record you trust.
- Look for the lag. Do backups rise during the rain, a day after, or a week after? Do inspection bookings follow a few weeks later?
Most owners find two things: urgent calls cluster around wet spells, and larger jobs arrive later, once homeowners have had time to think. Both matter for planning.
Map the jobs to the weather
Rain affects different drain jobs in different ways. Sort your services into three groups:
- Urgent during rain: main-line and floor-drain backups, overflowing catch basins on the property, sump pumps that can't keep up.
- Booked after rain: camera inspections to find out why a backup happened, perimeter drain assessments, downspout and storm line checks.
- Planned for the dry months: lateral replacements, perimeter drain replacement, larger excavation work that's easier when the ground is drier.
Each group needs a different message and a different time to run. The mistake we see most often is one "rainy season" ad that tries to sell all three at once.
Build the pages before the first storm
Search engines need time to find and rank new pages, and ads need time to settle. Prepare these pages well before your wet-season peak:
- A backup page written for the homeowner in the moment: what to do right now, what not to do, and how to reach you.
- A perimeter drain page that explains, in general terms, what perimeter drains do, the signs of trouble a homeowner may notice, and how your company assesses them.
- A storm and downspout page covering the property-side drainage your company handles, written as general information.
- A camera inspection page for the follow-up booking. Our guide to marketing a camera inspection covers what goes on it.
Use your own photos and clips, with homeowner consent. Pictures of your crew in rain gear at a real job are more convincing than any stock image.
Schedule the ads around staffing, not just rain
It's tempting to turn ad spend up whenever it rains. That only pays if someone answers the phone. Plan three things in advance:
- Who answers after hours during the wet months, and until what time.
- A budget ceiling for storm weeks, so one long wet spell doesn't burn a quarter's budget.
- Separate budgets for urgent and booked work, so emergency calls don't crowd out inspection bookings.
Our backup call capture service sets this up as a standard part of the account.
Say only what you can stand behind
Coastal drainage is full of rules that sound simple and aren't. Who is responsible for a storm connection, what a perimeter drain must connect to, and whether a backwater valve needs a permit all vary by municipality. Rather than summarising them:
- Link to the municipality's own page for each community you serve, once you've checked it exists and says what you think.
- Date your check.
- Tell homeowners to confirm with the municipality or a qualified professional.
One provincial point is worth knowing. According to the Province of BC's 2024 BC Codes page, the BC Plumbing Code is Book II of the BC Building Code, combining the National Plumbing Code with BC amendments, and BC Codes don't apply in the City of Vancouver, which has its own building bylaw (checked October 2026). If you serve Vancouver, your pages for Vancouver homeowners should point to the City's information, not the Province's.
A sample wet-season calendar
This is a template, not a rule. Shift every date to match your own call history.
| Timing (relative to your usual peak) | What to do |
|---|---|
| 10–12 weeks before | Review last year's calls; choose one or two jobs to focus on |
| 8 weeks before | Write or refresh backup, perimeter and inspection pages |
| 6 weeks before | Collect new photos and clips from current jobs (with consent) |
| 4 weeks before | Build ad groups, set budget ceilings, confirm after-hours cover |
| 2 weeks before | Publish profile posts about wet-weather drain care |
| During the peak | Watch daily: calls answered, jobs booked, budget used |
| 4–8 weeks after | Follow up on homeowners who had backups; offer inspections |
| In the dry months | Promote planned lateral and perimeter work |
A worked example
Invented numbers, to show the arithmetic. A coastal drain company averages 45 calls in a typical dry month and 80 in its wettest month. Last year, 30 of the wet-month calls went to voicemail because one person covered evenings. This year, it adds a second on-call person for the wet weeks and launches its campaign three weeks before the usual peak.
If those 30 missed calls had booked at the company's usual rate of 60%, that's 18 more jobs. At $350 average revenue per urgent clearing, the extra cover is worth about $6,300 in the busiest month, before counting the inspections and repairs that follow. The marketing helped, but the staffing decision did most of the work.
Beyond the coast
The same method works anywhere: read your call log, map jobs to the conditions that drive them, prepare early, and avoid claims you haven't checked. Inland and northern BC, the Prairies and the Atlantic provinces have very different winters, and our British Columbia page and the other region pages explain the differences. For lateral jobs that follow the wet season, see our guide to explaining a sewer lateral quote.
DrainageAgency.ca plans the marketing; your company does the drain work. We are not a contractor and don't perform any drainage or plumbing services.
Frequently asked questions
When does wet-season demand start on the BC coast?
Your own call history is the only reliable answer for your area. Pull two years of calls by week and look for the point where backups and drainage calls rise. Plan your campaign to be live a few weeks before that point.
Should we advertise perimeter drain work in the rainy months?
If you do that work and can schedule it, yes, but expect a longer decision. Homeowners often call about a wet basement during rain and book the larger job once things dry out.
Do the BC building codes apply in Vancouver?
The Province says BC Codes don't apply in the City of Vancouver, which has its own building bylaw. Point Vancouver homeowners to the City's information rather than to provincial pages.
Can we tell homeowners what the city requires for storm connections?
Only where you've read the municipality's own page and dated your check. Rules on storm and perimeter drain connections vary, and we don't publish them until they're confirmed.
Sources
- Province of BC: 2024 BC Codes (2026-10-23)