Licensed Granny Flat Specialist Riverstone
NSW licensed builder delivering SEPP-compliant granny flats across Riverstone 2765. BASIX, engineered slab (Class M–H), full certifier sign-off and 6-year structural warranty.
HIA Member
MBA NSW0476 300 300Quick Answer
A granny flat in Riverstone costs $150,000–$300,000+ depending on size and finishes. 1-bed from $150K, 2-bed from $200K. CDC fast-track approval in 10–15 business days. Buildana manages design, Blacktown City Council approval and fixed-price construction.
Building Granny Flats in Riverstone
A granny flat builder in Riverstone works a suburb in the middle of significant growth — Riverstone has its own station and a mix of heritage town centre and new-release development. Block sizes run 300 to 600m², so lot size genuinely matters: the larger blocks clear the 450m² Housing SEPP threshold for a 60m² secondary dwelling comfortably, while the smaller new-release lots may not.
So the survey is the honest first step. Where a lot qualifies, the station and growth demand make a rear dwelling let quickly. Near the heritage town centre I also check for character controls, since they can push a job off the fast CDC path into a DA.
The ground is moderately to highly reactive, so the slab is a stiffened raft engineered off a real geotech. The mixed stock means I confirm fibro before any demolition on the older houses.
We build fixed-price, licence HBL 487805C. In Riverstone, check the survey and any heritage controls first.
Buildana manages the full granny flat process in Riverstone — 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 Riverstone from $150K
- CDC fast-track approval (10–15 business days)
- 300–600m² blocks — most qualify for 60m² granny flat
- Riverstone zoned R2 Low Density
- Fixed-price contract — design to handover
- Class M–H soil — engineered slab included
- Rental yield $370–$490/week in Riverstone
- Free site assessment — near Riverstone station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Lot size decides it
Riverstone's blocks run 300 to 600m², so lot size genuinely matters — the larger blocks clear the 450m² Housing SEPP threshold comfortably, while the smaller new-release lots may not. The survey is the honest first step.
Where a lot qualifies, the station and growth demand make a rear dwelling let quickly.
Heritage centre, reactive clay
Near the heritage town centre I check for character controls, since they can push a job off the fast CDC path into a DA.
The moderately to highly reactive ground gets a stiffened-raft slab off a real geotech, and I confirm fibro before demolition on the older houses.
Granny flat builder in Riverstone — key facts
- Suburb
- Riverstone, NSW 2765
- Council / LGA
- Blacktown City Council (Blacktown City)
- Primary zoning
- R2 Low Density
- Typical lot size
- 300–600m²
- Soil class
- Class M–H
- Median house price
- $800K–$1.05M
- Home era
- Mixed
- 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.
Cost Guide
| Item | Estimated Range |
|---|---|
| Rental income model (Riverstone 1-bed) | $170,000 – $210,000 |
| Family member (dependent living) | $190,000 – $240,000 |
| Teenager retreat / adult child | $160,000 – $200,000 |
| Home office / short-stay | $150,000 – $200,000 |
| Future main dwelling (build granny first, big house later) | $200,000 – $250,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Assessment is the most important hour you'll spend on the project. Get the position, orientation, and access right and the build runs clean.
⏱We design your granny flat to maximise the 60m² allowance within Blacktown City Council's setback and POS requirements. Floor plan, elevations, and 3D render provided.
⏱CDC pathway exists specifically for compliant granny flats — use it. No neighbour notification, no Blacktown City Council planner queue, no committee politics.
⏱Fixed-price build: slab (Class M–H engineered), frame, roof, fit-out, connections. 10–16 weeks depending on size.
⏱Walk through your finished granny flat, collect keys. Occupation Certificate, 6-year structural warranty, and maintenance guide provided.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
Estimate Your Build Cost
Use our free calculator to get an instant cost estimate for your project
Still got questions? Talk to Oliver directly.
30-min free call — bring your block, your brief, your budget. We'll map out feasibility, timeline, and realistic cost. No sales pitch.
Frequently Asked Questions
Buildana built our granny flat in just 12 weeks. Fast approvals, great communication, and a beautiful final product. Highly recommend.
Fatima Al-Rashid
Liverpool, NSW
We Build Across Sydney
Headquartered in Western Sydney's Fairfield. Active across all 28 metropolitan Sydney LGAs — from Penrith to the Eastern Suburbs, the Hills to the Sutherland Shire.
Last updated: 1 July 2025
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