Adjust the sliders. Cost, monthly cash flow, gross yield, and payback period update in real time. Built on 2026 GTA market data — typical builds, typical rents, typical financing.
Note: Indicative only. Real numbers depend on your specific lot, design, finishes, and rental market. Use this to ballpark, then book a free assessment for a precise quote.
Set your suite type, size, and target rent. We'll handle the math.
Legal basement apartment — fastest permit timeline (4–6 months), lowest entry cost.
Premium = Bull Homes default — solid hardwood, quartz, mid-tier appliances, energy-efficient mechanicals.
Defers $15K–$30K in Toronto Development Charges over 20 years.
Eligible owner-occupiers can refinance up to 90% of post-construction value (vs. 80% on a standard refi), with up to 30-year amortization. For most projects this means most of the build cost can be financed against post-build equity, dramatically reducing out-of-pocket capital. Actual proceeds depend on existing mortgage balance and lender approval. We coordinate with your mortgage broker. Not factored into the gross numbers below.
Live update as you adjust inputs.
Book a free 45-minute site visit. We measure your lot, review your goals, and email a written feasibility report with real costs within 5 business days.
Book Free AssessmentBuild cost = suite size × per-sqft cost × finish multiplier. Per-sqft costs reflect 2026 GTA market: basements $200–$350, laneway $450–$600, garden $425–$575 (all-in including permits, engineering, and finishes).
Net cost = build cost minus the present value of Toronto's 20-year interest-free Development Charge deferral (if applied), which saves $15–30K depending on suite size and municipality.
CMHC Refinance for Secondary Suites — separate from the figures above — lets eligible owner-occupiers refinance up to 90% of the post-build (as-improved) value of their home, vs. 80% on a standard refinance, with up to 30-year amortization. Actual capital unlocked depends on your existing mortgage balance, post-build appraisal, and lender approval. Subject to CMHC eligibility criteria. Bull Homes is not a mortgage broker and does not provide financial advice — we coordinate with your lender to align construction milestones with financing.
Annual cash flow = (monthly rent × 12) minus 10% for vacancy, maintenance, insurance, and management. Doesn't include mortgage interest on borrowed capital — for full ROI modeling, ask us for a detailed pro forma.
Gross yield = annual rent ÷ total build cost. Use this to compare against other investments. Payback = effective cost ÷ annual cash flow — how long until you've earned back your out-of-pocket.
Disclaimer: Calculator is for screening purposes only. Final numbers depend on lot specifics, design choices, financing terms, and market conditions. Not investment, tax, or legal advice — consult a qualified advisor for those.