Sewer scope before buying a house in Calgary

01 /Is a sewer scope worth it when buying in Calgary?

For most Calgary resale homes, yes. The arithmetic is lopsided: a scope typically costs $250 to $600, while replacing a lateral in Calgary plans at $14,000 to $40,000 by open cut and $10,000 to $30,000 by trenchless methods. If the camera finds a defect before you remove conditions, you have options. If you find it after possession, the bill is yours.

The City of Calgary's own records show why the question matters here. Of 367,397 City-side service lines, 20.2% carry the TIL code, generally read as clay tile, and 3.3% are cast iron. In communities the City classes as 1960s/1970s, 77.5% of City-side lines are TIL. Those records cover only the City's portion, but the private side of a house from the same era was very often laid in the same material.

02 /How is a sewer scope done?

A sewer scope is done by pushing a waterproof camera on a semi-rigid cable into the building drain and along the lateral toward the City connection, recording video the whole way. A counter on the reel shows the distance from the access point, so every defect has a location. When the camera stops at something worth marking, a small transmitter in the camera head, called a sonde, lets the operator find that spot from the surface and estimate its depth.

1. Find access

   Usually the main cleanout in the basement floor near where the water service enters. If it is buried under flooring, the operator may need to pull a toilet or use another access, which needs the seller's permission.

2. Run the line

   The camera travels from the access point out under the foundation and along the lateral, ideally to the connection at the City main.

3. Mark and locate

   Each defect is noted with its distance; important ones are located and their depth read from the surface.

4. Record and report

   You should receive the full video file and a written summary of observations with distances.

A standard home inspection does not usually include this. Alberta defines a home inspection as an opinion on a dwelling's condition based primarily on a non-invasive examination of readily accessible features and components. A lateral buried two metres down is not readily accessible, so plan for a scope as its own booking even if your home inspector offers it as an add-on.

03 /How much does a sewer scope cost in Calgary?

A sewer scope in Calgary typically costs $250 to $600 as a 2026 planning estimate. The spread comes from what the scope includes and how hard the line is to reach.

Paying at the higher end for locating and a written report is usually money well spent on a purchase. A defect with a distance and a depth can be priced by a contractor within days; a defect with neither is a guess.

04 /When should the scope happen in a Calgary purchase?

The scope should happen in the first half of your condition period. Alberta purchase contracts commonly give the buyer a set number of days to satisfy or waive conditions such as financing and inspection, and busy markets push those windows short. Everything that follows a bad scope — a second opinion, a written quote, a negotiation — takes days you will not have if the scope is booked on the last afternoon.

1. Ask your REALTOR® to include a condition that covers a sewer camera inspection, whether as part of the inspection condition or separately; your lawyer or REALTOR® will know the right wording.
2. Book the scope the day your offer is accepted.
3. Arrange access through the listing side, including permission for anything intrusive such as pulling a toilet.
4. If the scope finds a defect, get at least one written quote before the condition deadline.
5. Decide, with your REALTOR® and lawyer, whether to proceed, renegotiate or walk away under the terms of your condition.

Real Estate Council of Alberta consumer information explains that conditional offers exist so buyers can do due diligence, such as a home inspection, before committing. A sewer scope belongs in that due diligence, because the sewer is the one major system that stays invisible until it backs up.

05 /How do I choose a Calgary sewer scope provider?

Online reviews tell you whether a company is punctual and polite. They rarely tell you whether its footage is useful. When you compare Calgary sewer scope providers, ask these questions directly:

• Do I get the full video file, not just a summary or a few stills?
• Does the video show a running distance counter, and does the report list defects by distance?
• Will you locate defects from the surface and give depths?
• Will you try to reach the City connection, and if not, will you tell me where and why the camera stopped?
• Who is doing the scope, a licensed home inspector, a plumber or a drain contractor, and do you carry liability insurance?
• Do you also sell repairs? That is not wrong, but if the same company scopes and quotes, get a second quote from footage you own.

In Alberta, home inspection businesses and home inspectors must be licensed by the province. Drain contractors and plumbers who scope lines operate under their own trade and business rules. Whoever you hire, the deliverable that matters is the same: a complete, labelled video that a second contractor could price from.

06 /What should I ask the seller before the scope?

Before the camera goes in, ask through your REALTOR® for anything the seller has about the line. Sellers are not always required to have records, but many do.

• Any backups, floor-drain overflows or insurance claims, and when.
• Invoices for drain clearing, root cutting, relining or spot repairs.
• Any previous camera video, with the date.
• Whether a backwater valve is installed and where.
• Whether large trees near the line were removed or planted.
• Any correspondence with the City through 311 about the service line.

You can also look up the City-side record for the address yourself with the lookup built into the Home Buyer Sewer Risk Check. A City record showing CIPP means the City side has been relined; it says nothing about the private side, which is what the scope is for.

07 /What happens after the scope?

If the line is clean, keep the video with your purchase records; it becomes a baseline for the future and useful evidence when you sell. If the camera finds defects, the next steps are translating them into a likely remedy and a price, then deciding how to handle that with the seller. Either way, what to budget when buying an older Calgary home turns the result into a set-aside amount.

For a detailed booking checklist and condition-deadline planning, SewerScope.ca covers the scope itself. Start with reading a sewer scope report as a buyer, then negotiating sewer repairs when buying. Use the Calgary Replacement Cost Estimator for a planning range, and request quotes with the footage to get written prices inside your condition period.

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