How much does a granny flat cost in Byron Bay?
Granny flat prices in Byron Bay run $110,000–$160,000 for a turnkey 1-bedroom build (35–45m²) and $140,000–$210,000 for a 2-bedroom (~60m²), with prefab/kit units from about $80,000 supplied. That’s roughly $2,300–$3,500/sqm for a turnkey build, depending on design, site and finishes.
Comparing cities, or after the Australia-wide picture? See the national guide: How much does a granny flat cost in Australia?
Detailed Pricing — Granny Flat Cost in Byron Bay 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Prefab / modular granny flat — 1-bed (delivered) | $80,000total | $95,000 | $120,000 |
| Studio / 1-bed granny flat (35-45m², turnkey) | $110,000total | $130,000 | $160,000 |
| 2-bed granny flat (~60m², turnkey) | $140,000total | $175,000 | $210,000 |
| Custom / premium 2-bed (high-end finishes) | $210,000total | $260,000 | $320,000 |
| Two-storey granny flat (complete, incl. site costs + approvals) | $280,000total | $345,000 | $425,000 |
| Granny flat with attached single garage (complete, incl. site costs + approvals) | $170,000total | $210,000 | $260,000 |
| Garage / outbuilding conversion | $40,000total | $75,000 | $120,000 |
| Turnkey build (per m² built) | $2,300/sqm | $2,800 | $3,500 |
| Site works + service connections | $15,000total | $25,000 | $40,000 |
| Approvals, full package (CDC + private certifier) | $3,000total | $6,000 | $12,000 |
| Demolition / site clearing (if needed) | $3,000total | $6,000 | $15,000 |
| Driveway, path & basic landscaping | $5,000total | $10,000 | $20,000 |
| Privacy fencing (per m) | $80/m | $130 | $190 |
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Get Byron Bay quotes →Prices include GST. Based on Byron Bay metro area, October 2026. Outer suburbs may vary.
Byron Bay’s Granny Flat Market in 2026
Byron Shire has rental rules of its own: granny flats approved between April 2011 and November 2019 under the old affordable-housing rules carry conditions to keep them as homes for permanent residents, and those conditions ban holiday letting. For other homes, non-hosted short-term rental is generally capped at 60 days a year outside the exempted areas.
With 36.8% of Byron Bay homes rented at the 2021 Census, those letting rules matter here. The lot can’t be subdivided, and it can hold only one main house and one granny flat.
In the Byron Bay table a studio or one-bedroom flat is $110,000–$160,000 and a two-bedroom $140,000–$210,000, turnkey; approvals (certificate and certifier) are $3,000–$12,000.
How Granny Flat Costs Vary Across Byron Bay
Byron Bay & Beaches
Typical cost: $179k–$329k turnkey
Byron Bay, Suffolk Park, Wategos, Tallow Beach. Premium land, high demand and salt-air sites push costs to the top of the range. Quality detached builds with strong rental returns.
Coastal Villages
Typical cost: $159k–$299k turnkey
Brunswick Heads, Ocean Shores, New Brighton, South Golden Beach. Relaxed coastal villages with strong rental demand. Coastal detailing adds a little cost.
Hinterland
Typical cost: $159k–$299k turnkey
Bangalow, Federal, Newrybar, Possum Creek. Acreage and lifestyle blocks suit larger detached builds; sloping sites need engineered slabs.
Mullumbimby & Rural
Typical cost: $149k–$279k turnkey
Mullumbimby, Myocum, Wilsons Creek, Main Arm. Town and rural blocks inland. Rural access and slope can add to site-works cost.
Ewingsdale & Tyagarah
Typical cost: $159k–$299k turnkey
Ewingsdale, Tyagarah, Skinners Shoot, Coopers Shoot. Rural-residential blocks close to town. Exposed, sloping sites need engineered footings.
What You’ll Actually Pay — Common Byron Bay Granny Flat Builds
Byron Bay granny flats from the table’s rows.
1-bedroom granny flat — 40m², turnkey
$110,000–$160,000 total
Typically $130,000 turnkey; with the driveway, path and basic landscaping row at the typical $10,000, $140,000.
2-bedroom granny flat — 60m², turnkey
$140,000–$210,000 total
Two bedrooms at the typical $175,000. If the flat was approved between 2011 and 2019, check its conditions before planning a holiday let.
Prefab / modular 2-bed — installed
$80,000–$120,000 delivered (1-bed row)
The prefab row in the table is a one-bedroom, delivered: $80,000–$120,000. A two-bedroom modular has no row of its own here.
Garage / outbuilding conversion to studio
$40,000–$120,000 total
A garage or studio conversion is $40,000–$120,000 in this table.
Custom architect 2-bed / two-storey
$210,000–$425,000 total
For a designed or two-storey flat the table runs from $210,000 (custom two-bedroom) to $425,000 (two storeys or with a garage).
What Affects Granny Flat Costs in Byron Bay
Build method
Prefab or modular units (from ~$80,000 delivered) are cheapest; standard site-built homes are mainstream; custom and two-storey designs cost the most.
Size & bedrooms
Expect $110,000–$160,000 for a turnkey 1-bed (35–45m²) and $140,000–$210,000 for a 2-bed (~60m²).
Site works & access
A flat, clear, easy-access block is cheapest; slope, rock, tight access and craneage can add $15,000–$40,000 in site works.
Service connections
Water, sewer, power and stormwater connections add cost — keeping wet areas near the main house’s services keeps plumbing runs short.
Approvals
In NSW a secondary dwelling up to 60m² on a 450m²+ block can be approved as Complying Development (CDC) through a private certifier in around 20 days, rather than a full DA.
Finishes & inclusions
Standard finishes keep costs down; stone benchtops, premium flooring, decks and air-conditioning push a build toward the top of the range.
How to Save Money on Granny Flat Cost in Byron Bay
Frequently Asked Questions — Granny Flat Cost in Byron Bay
Our Methodology
We build these estimates by pulling pricing from public cost guides, major trade marketplaces, industry body rate data, and builders’ own websites, then cross-checking the ranges and adjusting for local cost-of-living and advertised labour rates. The figures are editorially independent and no business pays to change them. Treat every number as a guide rather than a quote — the only way to know your real price is to get a few written quotes. Last reviewed October 2026. Read our full methodology →