1-Bedroom vs 2-Bedroom Granny Flat — Cost and Value Comparison
Choosing between a 1-bed and 2-bed granny flat affects your construction cost, rental income, and property value. Buildana (Lic. 487805C) builds both configurations across Western Sydney.
Cost Comparison
1-bedroom granny flat (40–45 sqm): all-in $118,000–$167,000 2-bedroom granny flat (55–60 sqm): all-in $150,000–$207,000
Cost difference: $32,000–$40,000 for an additional 15–20 sqm.
The additional sqm costs approximately $2,100–$2,400/sqm — consistent with the per-sqm rate. You are paying for the additional bedroom and slightly larger living area. Kitchen, bathroom, and all service connections are the same regardless of size.
Rental Income Comparison
Weekly rental rates in Western Sydney (2026):
1-bed: $300–$390/week across Fairfield, Liverpool, Canterbury-Bankstown 2-bed: $380–$500/week across Fairfield, Liverpool, Canterbury-Bankstown
The 2-bed commands $80–$110/week more. Over a year: $4,160–$5,720 in additional rental income.
ROI on the extra spend: 10.4–17.9% per year. The 2-bed pays for itself in 6–10 years while generating income indefinitely. In almost all cases, the 2-bed is the better investment.
