Duplex Rental Yield Calculator

New duplex builds in Western Sydney typically achieve 4.5–6% gross yield and 3–4.5% net yield on total project cost (land + build). Yields vary based on location, dwelling size, finish quality, and local rent demand. Build-only yields (excluding land) are higher, often 8–12%.

In many Western Sydney LGAs, duplex development delivers strong returns through both rental income and equity creation. Low vacancy rates (~2–3% in Fairfield, Liverpool, Canterbury-Bankstown) plus strong rental demand for 3-bedroom homes make duplexes one of the best residential investment strategies in the current market.

Total build cost for a duplex in Sydney ranges from $600,000 to $1,000,000+ depending on size and finish level. This includes construction (~$2,500–$3,200/m²), demolition ($25K–$45K), approvals ($25K–$35K), site works ($35K–$55K), and S7.11 contributions ($25K–$45K). Land cost is additional.

Gross yield = annual rent ÷ total investment. Net yield deducts expenses like vacancy, management fees, insurance, maintenance, and rates. For duplex investments, the gap between gross and net is typically 1.5–2.5 percentage points.

Yes. Buildana (Lic. 487805C) offers free feasibility consultations for duplex developments. We assess your site, estimate realistic build costs, review council requirements for your LGA, and project rental returns — giving you the full picture before committing.