Granny Flat Builder Kenthurst — Approval in 10 Days, Finished in 14 Weeks
Kenthurst 2156 secondary dwellings via the NSW Affordable Rental Housing SEPP. CDC fast-track (10–15 days), construction in 14–20 weeks. Free site check.
HIA Member
MBA NSW0476 300 300Kenthurst Secondary Dwellings
Kenthurst is acreage — 1 to 10 hectare-plus rural-residential holdings in the sandstone country of The Hills, equestrian and lifestyle blocks with a premium feel. A granny flat here is a rural second dwelling, so the block size is never the issue; the approval path and the off-grid servicing are.
On RU2 rural land the secondary dwelling generally goes through a development application rather than complying development. On acreage that's fine — you've got room to place it wherever makes sense, near the house or well apart for genuine independence.
The land is Hawkesbury Sandstone, so footings are designed off a geotech and rock is common. Most of Kenthurst is bushfire-prone, so the dwelling meets the RFS requirements for its BAL rating, and there's no sewer, so on-site wastewater services the flat.
I build these fixed-price with the DA, bushfire and servicing worked out first. Licence HBL 487805C.
Buildana manages the full granny flat process in Kenthurst — from site assessment and CDC fast-track approval through to fixed-price construction and handover. We build studio, 1-bedroom, and 2-bedroom designs up to the NSW maximum of 60m².
Read our Complete Granny Flat Guide or explore granny flat builds across Sydney.
- Granny flats in Kenthurst from $150K
- CDC fast-track approval (10–15 business days)
- 1–10ha (acreage) blocks — most qualify for 60m² granny flat
- Kenthurst zoned R2 Low / RU2 Rural Landscape (acreage belt) / R1/R3 (Sydney Metro Northwest precincts)
- Fixed-price contract — design to handover
- M — engineered slab included
- Rental yield $520–$780/week (large lots support generous siting) in Kenthurst
- Free site assessment — near No rail (rural) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Acreage sets the approach
On RU2 land the second dwelling generally needs a DA, and on a premium acreage holding that suits a considered build — proper independent accommodation for family, staff or guests, placed with the space these blocks allow.
There's no squeezing here. The design question is where to put it for the best privacy, access and outlook, not whether it'll fit — which is a nice problem to have.
Sandstone, bushfire and off-grid servicing
Kenthurst sits on Hawkesbury Sandstone, so footings are designed off a geotech and rock excavation is common — priced in from the report, not guessed at. It's what keeps the fixed price from moving.
Most of the suburb is bushfire-prone, so the dwelling meets the RFS requirements for its BAL rating, and being off sewer it runs on tank water and on-site wastewater sized for the extra load. I sort all of that before the number's locked.
Granny flat builder in Kenthurst — key facts
- Suburb
- Kenthurst, NSW 2156
- Council / LGA
- The Hills Shire Council (The Hills)
- Primary zoning
- R2 Low
- Typical lot size
- 1–10ha (acreage)
- Soil class
- M
- Median house price
- $3M–$8M+ (acreage)
- Home era
- Mixed rural
- Typical price range
- $150,000 – $300,000+
- Typical timeline
- 4–6 months design to handover
- Approval pathway
- CDC via NSW Affordable Rental Housing SEPP (10–15 days)
Want a real number for YOUR block — not a generic estimate?
Free site assessment, fixed-price contract, line-itemised quote within 48 hours. No high-pressure sales — just a real builder talking real numbers.
Last updated: 1 July 2025
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