When you've inherited a fixer-upper, just bought a home, or are working through a long deferred-maintenance list, the order of repair matters as much as the cost. This Ottawa-specific priority framework prevents the classic mistakes: renovating a kitchen before fixing the leaking roof above it, finishing a basement before solving the moisture problem, or painting walls before stopping the water that just stained them.
Tier 1 (Safety & Life-Safety): immediate health/safety hazards — gas leak, electrical fire risk, structural collapse risk, carbon monoxide, asbestos disturbed, mold over 10 sq ft. Tier 2 (Structural & Foundation): foundation cracks (active), structural rot, framing damage, sagging floors. Tier 3 (Weather Envelope): roof, siding, windows, doors, flashings, gutters — anything that keeps water out. Tier 4 (Mechanical Systems): HVAC, plumbing, electrical (non-emergency upgrades). Tier 5 (Cosmetic & ...
Gas leak: Enbridge 1-866-763-5427, do NOT delay. Electrical fire risk (sparking, scorched panel, melted outlets): call ESA-licensed electrician same-day, do NOT use affected circuits. Structural collapse (sagging beam, foundation displacement): vacate affected area, structural engineer assessment ($385-$685). CO alarm sounding: evacuate, ventilate, call HVAC for furnace inspection, replace alarm if 7+ years old. Asbestos disturbed (popcorn ceiling, vermiculite insulation, old pipe wrap): stop wo...
Foundation cracks (active or wider than 1/4 inch): foundation engineer first ($385-$685), then waterproofing/repair contractor. Rotted sill plates / floor joists / load-bearing studs: licensed framing carpenter. Sagging floors (more than 1/2 inch over 10 feet): engineer assessment to confirm cause (joist failure, sub-floor rot, foundation settlement) before repair. Brick veneer cracking/displacement: mason + structural assessment. Roof framing/truss damage: roofer + structural engineer. Common O...
Roof first: any active leak, missing shingles, damaged flashing, ice-dam history, gutters disconnected. Cost $385-$1,250 for repair, $8,500-$22,000 for full replacement. Then siding: cracked/missing siding, failed sheathing exposed, water-entry caulk failures. Cost $185-$1,250 for repair, $12K-$45K for full replacement. Then windows & doors: failed seals, broken hardware, water entry around frames, weather-stripping failure. Cost $185-$1,050 per repair, $1,200-$3,200 per replacement. Then exteri...
Electrical panel: any 60-amp service or knob-and-tube wiring upgrade ($3,500-$12,000). Then plumbing: galvanized supply line cascade-failure replacement, water-heater approaching 15 years, sump-pump with battery backup install. Then HVAC: furnace approaching 20 years (replacement with rebate stacking), AC approaching 15 years, ductwork sealing. Then envelope insulation: attic R-value upgrade to R-60 (often eligible for Greener Homes Grant), basement insulation, air sealing. These can run in para...
ONLY after Tiers 1-4 are addressed. Kitchen and bath renovations, flooring replacement, paint, trim, landscaping, deck construction. The classic mistake: $45K kitchen renovation with $8K foundation leak above — kitchen will need to be torn out within 3 years. Fix foundation FIRST.
Tier 1 (safety) → Tier 2 (structural) → Tier 3 (envelope: roof, siding, windows) → Tier 4 (mechanical: electrical, plumbing, HVAC) → Tier 5 (cosmetic: kitchen, bath, flooring, paint). Complete each tier before moving to the next.
Never. Always fix the envelope (roof, windows, siding) before any cosmetic renovation underneath. A new kitchen with a leaking roof above is a tear-out within 2-3 years.
Address Tier 1 (safety) and Tier 2 (active structural failure) immediately regardless of budget. Defer Tier 5 (cosmetic) indefinitely. Tier 3 (envelope) and Tier 4 (mechanical) split by urgency: active leaks first, then approaching-end-of-life systems with rebate stacking opportunities.
Always before purchasing a fixer-upper. Older Ottawa homes (pre-1980): $685-$2,250 for full BCA. Identifies and quantifies all Tier 1-3 issues so you can budget repairs and renegotiate purchase price if needed.
Structural work, all new electrical circuits (ESA permit), new plumbing rough-in (plumbing permit), HVAC replacement, roof replacement of more than 50% area, additions, basement finishing with new bathrooms/bedrooms. Cosmetic work (paint, flooring, like-for-like fixture swaps) usually no permit needed.