Contractors don’t wake up thinking about insurance. You think about schedules, trades, draws, and not getting burned on a job.
But when a loss happens on a renovation project, it usually looks very predictable from an insurance perspective. The same types of claims show up over and over again.
If you understand what goes wrong most often, you can design your sites and your contracts so those losses are less likely to land on you.
This guide walks through the most common renovation claims I see in Canada (outside Quebec), plus simple steps contractors can take to reduce the chance and impact of each one.
1. Theft of Building Materials
This is the big one.
Renovation sites are attractive targets. Materials are sitting in a half-open structure, often with minimal security and no one living there. Copper, lumber, trim, appliances, HVAC units, even tools — they go missing fast.
How it usually happens
- Materials dropped off early and left visible
- Garage or main floor left unlocked or easily forced
- No lighting or cameras
- Quiet residential street or rural location
Claims impact
Theft claims cost jobs money and time:
- Delayed timelines while replacements are sourced
- Price increases if you’re re-ordering mid-project
- Friction with owners and lenders
- Arguments over who is paying the bill
How contractors can reduce theft risk
Here are practical steps that actually make a difference:
- Store inside, not outside. Keep lumber, copper, fixtures, and appliances inside the structure, out of sight.
- Lock points of entry. Change locks, use deadbolts, and keep one controlled access point.
- Lighting and motion sensors. Cheap, but effective deterrents.
- Simple camera setup. Even basic WiFi cameras at key angles can discourage theft.
- Stagger deliveries. Avoid having high-value items delivered weeks before install.
A good renovation policy will include theft of materials on premises, but prevention is still your best line of defence.
2. Vandalism and Malicious Damage
The second common category is intentional damage — broken windows, spray paint, kicked-in doors, smashed drywall.
Vacant or clearly “under reno” properties are targets for bored kids, trespassers, or just the wrong person walking by at the wrong time.
How it usually happens
- Property stands vacant for weeks
- No fencing or “no trespassing” signage
- Easy access from alleys or side yards
- Night activity in the area
How contractors can reduce vandalism risk
You can’t fully stop this, but you can make your sites less appealing:
- Fence vulnerable spots. Temporary fencing around easy access points.
- Clear signage. “No trespassing,” “CCTV in use,” “Construction site – keep out.”
- Secure doors and windows. Boarding or temporary barriers when frames are exposed.
- Clean up regularly. A tidy site looks monitored; a messy site looks abandoned.
Renovation insurance that includes vandalism and malicious damage is key here, but again, how you present the site makes a big difference.
3. Water Damage During Construction
Water is a quiet threat on reno projects.
You’ve opened walls, moved plumbing, partly removed roofing, or altered drainage. Meanwhile, the weather doesn’t care that the job is half finished.
Typical scenarios
- Temporary roof coverings fail in a storm
- A fitting isn’t crimped or glued properly
- Lines are turned back on before final checks
- Freezing temperatures hit exposed plumbing
- Gutters or downspouts are removed and not temporarily redirected
How contractors can reduce water damage risk
- Protect the envelope. Use proper tarps, temporary roofing, and fix them correctly.
- Pressure test plumbing. Don’t reconnect water until lines are tested.
- Control heat. Use safe, appropriate temporary heat if needed to avoid frozen pipes.
- Manage runoff. Temporary downspouts or diverters so water doesn’t run into the open structure.
- Check at lockup. Before leaving for the day, always confirm: no active leaks, windows and openings are covered.
Renovation policies respond to many forms of water damage, but underwriters look closely at how exposed the structure is and how you mitigate that exposure.
4. Fire During Renovation
Fires on reno sites are less common than theft or water, but the losses are larger when they happen.
Common triggers
- Temporary heaters used improperly
- Extension cords overloaded
- Dust and flammable materials near heat sources
- Smoking on site
- Hot work (welding, soldering) done without clear protocols
How contractors can reduce fire risk
- Safe heaters only. No sketchy space heaters tucked into corners.
- Clear a safe zone. Keep combustibles away from heaters and electrical panels.
- Power discipline. Use appropriate cords, breakers, and temporary panels.
- No smoking inside. Designate a safe area outside, away from materials.
- Hot work rules. Time-limited permit, fire watch, and check the area after work is done.
Underwriters pay close attention to heating types, temporary heating, and how electrical work is handled during active renovations.
5. Premises Liability and Injury
Renovation sites are full of hazards. Tools, open stairwells, temp railings, exposed nails, uneven flooring — the list is long.
Common liability exposures for contractors:
- Visitors or owners walking on site
- Delivery drivers slipping or tripping
- Curious neighbours or kids entering the property
- Sub-trades injuring themselves in uncontrolled areas
How contractors can reduce liability risk
- Control who enters. Clear rules for site access.
- Walkways clear. Keep primary paths free of debris and cords.
- Guard rails and temporary barriers. Around stair openings, mezzanines, or holes.
- Signage. “Authorized personnel only” at entrances.
- Daily cleanup. A tidy site is a safer site.
Renovation insurance often includes premises liability as part of the package, which is why we ask how you manage the site physically, not just what you’re building.
6. Miscommunication Over Who Is Covered
This one isn’t a “claim type,” but it’s a common source of problems when a loss happens.
The issue
A loss occurs and suddenly everyone is asking:
- Who actually bought the policy?
- Is the contractor named?
- Is the owner named?
- Is the lender named?
- Are sub-trades covered or not?
If the structure is insured but the contractor isn’t named properly, disputes start fast.
How contractors can avoid this
- Decide up front: who buys the policy? Owner or contractor?
- Make sure the contractor is named correctly as an additional insured when needed.
- Include policy responsibilities in your written agreement.
- Align the COI with what the lender expects.
This is less about risk on site and more about paperwork, but it matters the day something goes wrong.
How Renovation Insurance Actually Helps Contractors
From your side of the table, renovation insurance isn’t just a lender box to tick.
It:
- Provides coverage for building and materials while you work
- Adds liability protection on an inherently risky site
- Keeps the lender and owner comfortable, which helps with draws
- Gives you a clear framework for what is and isn’t covered if something happens
You still need solid contracts and site safety, but renovation insurance is the financial backstop for the project.
Simple Prevention Checklist for Every Reno Job
You don’t need a 20-page safety plan for smaller projects. You do need discipline on the basics.
Here’s a one-page mental checklist:
- Materials stored inside and out of sight
- Site has locks, lighting, and ideally cameras
- Structure is properly covered during weather-sensitive stages
- Temporary heaters and power are set up safely
- Clear, safe paths and marked hazards on site
- Access is controlled and signed
- Policy is in force, and everyone is named correctly
Do these consistently and you’ll see fewer issues over a season of work.
Get Eyes on Your Next Project
If you have a renovation or small commercial project coming up and you want a second opinion on risk and coverage, send me the basics:
- Address
- Building value
- Reno budget
- Scope summary
- Timeline
- Occupancy during reno
I’ll tell you:
- Where the biggest claim risks are on that job
- How renovation insurance can respond
- What a realistic structure and price range might look like
