We added a 320 sq ft rear addition to our 1960s Barrie bungalow — converted a small galley kitchen into an open kitchen/dining/family room. This is the full story from permit to move-in.
Design and zoning check:
- Hired an architectural technologist (not a full architect) — $3,200 for drawings
- Lot coverage check: we were at 28%, allowed 40%, addition brought us to 34% — no variance needed
- Setback from rear property line: required 6 metres, addition stopped at 7.5m
Permit process:
- City of Barrie permit: $1,840
- Submitted November, issued January (10 weeks — Barrie is slower than GTA)
- Required inspections: footings, framing, insulation/vapour barrier, electrical rough-in, HVAC, final
Contractor quotes for the full build:
- GC Quote A: $148,000 (full turnkey, premium finishes)
- GC Quote B: $112,000 (mid-range finishes, same structural scope)
- GC Quote C: $128,000
We went with Quote B at $112,000.
Final cost: $119,400 — $7,400 over quote. Overages: engineered floor beam required an upgrade ($2,800), we added a gas line rough-in for future range ($1,600), and the roof tie-in required more work than expected ($3,000).
The addition effectively doubled our usable main floor. Real estate agent says it added $180,000 to $220,000 in value at current Barrie prices.
Advice: The architectural technologist route saved us $6,000 to $10,000 vs a full architect for a straightforward addition. For complex additions, the full architect is worth it.