How Much Does a Granny Flat Add to Property Value?
Average value uplift: $80,000–$160,000 for a quality 2-bed granny flat (40–85% of build cost reflected in increased property value).
Example: property before $900,000, build cost $185,000, property after $1,020,000–$1,060,000. Uplift: $120,000–$160,000.
What Drives the Uplift
1. Rental income (higher rent = higher value) 2. Quality of construction (professional build with approvals = full value) 3. Separation and privacy (own access, own meters = premium) 4. Design and finishes (modern, well-designed = higher rents = higher value) 5. Compliance (CDC/DA approval + Occupation Certificate = legal standing)
Total Return — Income Plus Capital
2-bed Fairfield, build cost $185,000: annual rent $22,880 + capital uplift $130,000 = year 1 notional return 82.6%. 5-year total (3% rent growth, 5% capital growth): $155,500 income + $164,000 capital = $319,500 on $185,000 investment = 173% total return.
A granny flat is one of the most capital-efficient property investments in Sydney. Contact Buildana.
