How do I assess roof, HVAC, and plumbing before
buying?
Want to avoid a massive renovation bill? How to spot roof, HVAC & plumbing red flags before you sign.
Quick answer
Inspect visually, verify age and records, run basic tests, and hire specialists for targeted inspections. Focus on roof lifespan, HVAC performance and plumbing material and leaks.
Why this matters
Roof, HVAC and plumbing are the three systems that trigger the biggest unexpected costs in any home purchase. Miss one and you pay later — often a lot more than you expect. This is renovations & upgrades triage: find critical fixes now, plan upgrades later.
Roof: fast checklist (2–5 minutes on site)
- Look for curling, missing or cracked shingles. Asphalt roofs older than 20–25 years are suspect. Tile/metal last longer.
- Check roofline for sagging or uneven areas.
- Inspect gutters for granule buildup and rust stains.
- Look in the attic for daylight through the roof or water stains.
- Ask for roof age, last replacement date, and warranty papers.
Red flags: multiple patched areas, active leaks, heavy moss, soft spots on decking.
HVAC: quick assessment
- Find model tags on furnace/air handler and condenser. Note manufacture year. Furnaces/AC 15–20 years old are near end of life.
- Run the system: does it start smoothly? Smell of burning? Unusual noises?
- Check filter condition, service stickers and visible refrigerant lines for oil (a leak sign).
- Review maintenance records. A poorly maintained system fails faster.
Plumbing: what to scan for
- Check visible pipes: galvanized pipe often needs replacement; copper and PEX are preferred.
- Look under sinks for leaks, corrosion or active drips.
- Flush toilets and run showers — watch for slow drains and low pressure.
- Inspect water heater: age (serial number), rust, leaks. Typical life 8–12 years.
- Ask seller for sewer scope if concerned about main line tree roots or backups.
Fast cost guide (ballpark)
- Roof replacement: $8k–$30k+ depending on size and material.
- HVAC replacement: $5k–$12k for typical systems.
- Major plumbing re-pipe: $3k–$15k.
Use these to weigh negotiation and lift offers accordingly.
Practical next steps (do this before you waive conditions)
- Get a full home inspection with detailed roof, HVAC and plumbing sections. 2. For any red flag, hire a licensed roofer, HVAC tech or plumber to provide a written quote. 3. Request receipts, permits and service history. 4. Use quotes to adjust offer price or add repair conditions.
Final word
Be methodical. A short visual check saves time; licensed specialists save money. If you want a local expert who knows renovations & upgrades and will protect your offer, contact Tony Sousa: tony@sousasells.ca | 416-477-2620 | https://www.sousasells.ca
