When you're looking at an older home in Victoria BC, it's easy to focus on the things you can see: the roof, windows, kitchen, bathrooms, electrical panel and overall condition of the house.

But some of the most important—and potentially expensive—parts of a property are completely out of sight.

The sewer line and perimeter drainage system are buried underground, yet problems with either can have a significant impact on a homeowner.

That doesn't mean every older home has drainage or sewer problems. It does mean that, depending on the age of the property, site conditions and what you learn during your due diligence, these systems may deserve a closer look before you remove your purchase conditions.

What Is a Sewer Line?

The home's sanitary sewer line carries wastewater from sinks, toilets, showers and other plumbing fixtures away from the house and toward the municipal sewer system.

Because much of this piping is underground, its condition usually isn't something a buyer can determine simply by walking through the property.

Over time, sewer lines can be affected by issues such as:

• Tree-root intrusion
• Cracks or damaged pipe
• Pipe deterioration
• Blockages
• Ground movement
• Improper installation or repairs

A home may appear to have perfectly functioning plumbing during a showing while still having an issue developing farther down the sewer line.

What Are Perimeter Drains?

Perimeter drains, sometimes referred to as foundation drains or drain tile, are designed to collect water around the foundation and direct it away from the house.

In Greater Victoria, where prolonged periods of rain are part of our climate, managing water around a home is particularly important.

A well-functioning drainage system helps reduce the likelihood of water accumulating around the foundation and entering basements, crawlspaces or lower levels.

Over time, drainage systems can become damaged, blocked or less effective. Older systems may also differ from what would typically be installed today.

Why These Systems Matter When Buying an Older Victoria Home

Many of Greater Victoria's most desirable neighbourhoods contain homes that are several decades old.

Buyers searching in areas such as Gordon Head, Cadboro Bay, Cordova Bay, Oak Bay, Fairfield, Fernwood, Esquimalt, Royal Oak and other established Saanich neighbourhoods may encounter properties built long before today's construction practices.

That isn't necessarily a disadvantage. Older homes can offer established landscaping, larger lots, character and excellent locations.

But understanding how the major systems of the property have been maintained should be part of the buyer's overall evaluation.

Warning Signs Worth Paying Attention To

During a showing or home inspection, certain observations may justify asking additional questions. These can include:

• Water staining in a basement or crawlspace
• Musty odours or signs of persistent moisture
• Freshly finished basement areas where the history is unclear
• Standing water near the foundation
• Low areas where water collects on the property
• Large mature trees near sewer lines
• Slow drains or previous sewer backups
• Older drainage systems with little or no maintenance history

None of these observations automatically means there is a serious problem. They simply tell us that additional investigation may be worthwhile.

What Can a Sewer Camera Inspection Tell You?

In some situations, a buyer may choose to have a qualified plumbing or drainage professional inspect the sewer line using a camera.

A camera inspection can provide information about areas that cannot be seen during a conventional home inspection, including the condition of the pipe and whether there are visible obstructions, damage or root intrusion.

The goal isn't to order every possible inspection on every house. The goal is to decide which investigations are appropriate based on the age, condition and history of the particular property you're considering.

Questions to Ask About Sewer and Drainage Systems

When buying an older property, some useful questions may include:

• Has the sewer line ever been repaired or replaced?
• Has there ever been a sewer backup?
• Have the perimeter drains been inspected, cleaned or replaced?
• Has the basement or crawlspace ever experienced water intrusion?
• Are there invoices or records for drainage work?
• Have any backwater valves or drainage improvements been installed?
• Are there mature trees near the sewer connection?

The answers may lead to additional questions—or they may provide reassurance that the systems have been properly maintained.

Who Is Responsible for the Sewer Line?

Responsibility can depend on the municipality and where a problem is located.

For example, the District of Saanich provides information for homeowners about sanitary sewer maintenance, blockages and responsibilities.

District of Saanich – Sanitary Sewer Information

Saanich also provides information for homeowners dealing with drainage and flooding concerns.

District of Saanich – Flood Information for Homeowners

Why Victoria's Rainfall Makes Drainage Worth Considering

Water management is an important part of maintaining a home on the West Coast.

The City of Victoria provides information for property owners about stormwater management and reducing flood risk.

These resources can be useful for buyers who want to better understand how water is managed around properties in Victoria:

• City of Victoria – Flood Prevention
• City of Victoria – Stormwater Management

Should Every Buyer Get a Sewer or Drain Inspection?

Not necessarily.

Every property is different, and due diligence should be tailored to the individual home.

The age of the property, location, drainage conditions, visible signs of moisture, landscaping, maintenance records and findings from the home inspection can all help determine whether additional investigation is worthwhile.

This is where experienced REALTOR® guidance can be particularly valuable.

Rather than simply working through a standard checklist, I help buyers look at the individual property, identify areas that deserve closer attention and decide what additional information they may want before becoming legally committed to the purchase.

Look Beyond What You Can See

A beautiful kitchen or renovated bathroom may be what first attracts you to a home, but some of the most important systems aren't visible at all.

When buying an older home in Victoria BC, understanding the condition and history of the sewer line, perimeter drainage and other major systems can help you make a more informed decision.

The goal isn't to find something wrong with the house. The goal is to understand what you're buying before you remove your conditions.

This article provides general real estate information and is not plumbing, drainage, engineering, inspection, insurance or legal advice. Buyers should obtain appropriate professional advice for their individual circumstances.