Licensed Granny Flat Specialist Kellyville Ridge
NSW licensed builder delivering SEPP-compliant granny flats across Kellyville Ridge 2155. BASIX, engineered slab (Class M), full certifier sign-off and 6-year structural warranty.
HIA Member
MBA NSW0476 300 300Quick Answer
A granny flat in Kellyville Ridge 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, The Hills Shire Council approval and fixed-price construction.
Granny Flat Builder in Kellyville Ridge
Kellyville Ridge is newer, tighter master-planned land — 400 to 700m² blocks from the 2000s and 2010s, contemporary brick and render, strong young-family demand. Granny flats work here, but the block size does more of the deciding than in the older, roomier estates.
On the blocks up around 700m² there's usually room to do it well. On the tighter ones near 400 to 500m², once you subtract the footprint of a modern house, its setbacks and the separation a second dwelling needs, it gets genuinely close — so I lean on the survey rather than a hopeful sketch.
The ground is Wianamatta Shale, reactive, so the slab is engineered off a geotech. Nothing unusual for the area, just done properly rather than assumed.
Fixed price, survey-led on the tight blocks, licence HBL 487805C.
Buildana manages the full granny flat process in Kellyville Ridge — 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 Kellyville Ridge from $150K
- CDC fast-track approval (10–15 business days)
- 400–700m² blocks — most qualify for 60m² granny flat
- Kellyville Ridge 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 Kellyville Ridge
- Free site assessment — near Bus to Kellyville Metro (2 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Block size does the talking
On the bigger Kellyville Ridge blocks near 700m², a second dwelling fits comfortably with its own yard. On the tighter 400 to 500m² lots, the modern house already takes a big share of the block, and once you add setbacks and the required separation, the space left can be marginal.
I won't promise a layout on a tight block sight unseen. I get the survey, work out what genuinely fits, and tell you straight whether it's a clean one-bedroom, a compact two, or not quite worth it. That honesty saves you money and disappointment.
Straightforward ground, young-family market
The Wianamatta Shale is reactive, so the slab is stiffened and designed off a geotech report. That's the one technical must-do here, and getting it right first keeps the fixed price stable.
This is a young-family suburb, so a flat suits either a rental or accommodation for extended family. I build to match the newer homes around it — a cheap box would look out of place and add little.
Granny flat builder in Kellyville Ridge — key facts
- Suburb
- Kellyville Ridge, NSW 2155
- Council / LGA
- The Hills Shire Council (The Hills)
- Primary zoning
- R2 Low
- Typical lot size
- 400–700m²
- Soil class
- M
- Median house price
- $1.4M–$1.9M
- Home era
- 2000s–2010s
- 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.
How It Works
From First Call to Final Key
Most Kellyville Ridge blocks support a granny flat — the question is where it sits, how it accesses the street, and how it shares the yard with the main house. We work that out on site, with the existing house and existing services in front of us.
⏱1-bed or 2-bed floor plan designed for your Kellyville Ridge block — up to the NSW maximum of 60m². Layout, window placement, kitchen and bathroom positioning optimised for liveability and rental appeal.
⏱We lodge your CDC application with all required documentation — BASIX, plans, site analysis, stormwater. Private certifier approval in 10–15 business days.
⏱12-week typical timeline for a 60m² 2-bed: slab pour week 1, frame stand weeks 2–3, lock-up week 5, internal fit-out weeks 6–10, finishes and external works weeks 11–12. We provide the dated programme upfront so you can plan move-in or tenant placement.
⏱OC issued, defect-free inspection completed, keys handed over. Your granny flat is ready to occupy or lease.
⏱Quality Promise
We build Kellyville Ridge granny flats that hit the NSW 60m² maximum cleanly. Engineered slab, separate meter, rental-ready at handover.
Cost Guide
| Item | Estimated Range |
|---|---|
| Rental income model (Kellyville Ridge 1-bed) | $180,000 – $230,000 |
| Family member (dependent living) | $200,000 – $250,000 |
| Teenager retreat / adult child | $170,000 – $220,000 |
| Home office / short-stay | $160,000 – $210,000 |
| Future main dwelling (build granny first, big house later) | $210,000 – $260,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
Estimate Your Build Cost
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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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