A renovation is exciting because you finally get the kitchen you want, the basement you will actually use, or windows that do not whistle in January.

It is also the best time to fix the hidden stuff that can quietly cause bigger problems later: aging electrical, outdated plumbing, weak insulation, and drafty windows.

Here is the part many homeowners do not realize. Some insurance companies will refuse to insure, require upgrades, or in certain situations deny a claim if there is high-risk wiring or plumbing in the home, especially if it was not disclosed properly. What is “high risk” varies by insurer, but there are a few usual suspects.

This guide explains what to look for in Edmonton and area homes, why insurers care, and how Four Elements can help you upgrade confidently while the walls are already open.

Why renovations are the perfect time to upgrade the “invisible” systems

When drywall comes down, the real value of renovation shows up:

• Access is easy (no fishing wires through finished ceilings, no opening walls twice).
• Work is more efficient (trades can complete upgrades faster and with less mess).
• You can document everything (permits, inspections, invoices, photos). That documentation can matter for resale and for insurance conversations.

If you are already renovating, the incremental cost to modernize systems is often far lower than doing it as a standalone project later.

The insurance angle most people miss

Many insurers ask underwriting questions about things like:

• Knob-and-tube wiring
• Aluminum wiring
• Certain plumbing materials such as Poly-B

Some insurers will not insure a home with these systems, others will require an inspection or remediation, and some will insure but with conditions or higher premiums.

Also important: if an insurance application contains incorrect or missing information, insurers may treat that as a disclosure issue. Some insurance sources explicitly note that undisclosed risks can lead to claim denial or policy cancellation.

This is not meant to scare anyone. It is meant to help you avoid a preventable headache.

The “watch list” for Edmonton and area homes

1) Knob-and-tube wiring (often in older homes)

Knob-and-tube wiring commonly triggers insurance concerns. An Alberta real estate resource notes that many policies will not cover knob-and-tube wiring and that it often needs remediation once identified.
Rates.ca also notes that the Insurance Bureau of Canada recommends removing knob-and-tube wiring and that some insurers will not insure homes with it, while others may require replacement or an inspection.
Industry coverage also describes insurer reluctance around knob-and-tube wiring in older homes.

Renovation opportunity: If you are opening ceilings or walls, this is the best time to replace or properly remediate wiring and update panels or circuits.

2) Aluminum wiring (common in some 1960s to 1970s homes)

Some insurers require proof of inspection and/or specific repairs before they will provide or renew coverage. ESA Safe explains that some insurers will not provide or renew insurance without an inspection and may require documentation like a Certificate of Acceptance.

Renovation opportunity: You can address connections, upgrade devices, and modernize circuits while access is straightforward.

3) Poly-B plumbing (a big one in Alberta)

Poly-B is widely discussed as an insurance risk in Canada. Square One’s underwriting questions page states that many companies view Poly-B as a hazard and may refuse to insure a home with it.
ATCO Energy’s Alberta-focused Poly-B replacement page notes that many insurance companies in Canada will not cover damage caused by Poly-B leaks.

Renovation opportunity: If you are renovating kitchens, bathrooms, basements, or doing a whole-home update, swapping out Poly-B can be far easier while walls are open.

“Up to code” also means safer, more efficient, and more comfortable

Insurance is one reason to modernize, but not the only one. These upgrades also pay off in day-to-day living.

Electrical upgrades can mean:

• Safer wiring and connections
• Capacity for modern loads (EV charging, hot tubs, induction ranges, added appliances)
• Cleaner, more thoughtful outlet and lighting placement

Plumbing upgrades can mean:

• Reduced leak risk
• Better shut-off control and serviceability
• Cleaner water delivery and improved fixture performance

Insulation and window upgrades can mean:

• More consistent temperatures room to room
• Fewer drafts and cold spots
• Lower heating costs and less strain on HVAC

A practical checklist for homeowners planning a renovation

Before you finalize your scope, consider adding these to your planning conversation:

• Ask your insurer or broker: Are there materials or systems you will not insure (or will insure with conditions)?
• If your home is older: Confirm whether knob-and-tube or aluminum wiring exists.
• Check visible plumbing near the water tank and under sinks for Poly-B identifiers.
• Plan for documentation: permits (if needed), inspection records, invoices, and photos before walls close.
• Build upgrades into the renovation sequence so you do it once, not twice.

How Four Elements helps you do this the smart way

Four Elements can help you use your renovation as a “one-and-done” opportunity:

• Identify likely electrical and plumbing risks early in planning
• Coordinate the right licensed trades
• Build upgrades into the schedule so inspections and close-ups happen at the right time
• Deliver clean documentation and a finished home that is safer, more efficient, and easier to insure

If you are renovating in Edmonton, Sherwood Park, and surrounding area, consider booking a consult before you finalize design. A short planning conversation can save a lot of cost and stress later.