Licensed Granny Flat Specialist Botany
NSW licensed builder delivering SEPP-compliant granny flats across Botany 2019. BASIX, engineered slab (Class M), full certifier sign-off and 6-year structural warranty.
HIA Member
MBA NSW0476 300 300Botany Granny Flat Construction — Fixed Price
Water sits high under Botany, and that is the first thing a granny flat builder here needs to respect. The Botany Sands aquifer means an elevated water table on many blocks, drainage and slab detailing matter more than they would two suburbs west. You are also under the airport flight path, so acoustic construction is worth pricing in, and remediated parcels near Port Botany carry contamination overlays.
Get those right and Botany stacks up well. 400 to 700m² blocks clear the 450m² SEPP threshold on most streets, and rents of $480 to $720 a week put payback inside a decade for many owners. The heritage pocket around the village needs a check first.
What I would check first on a Botany block: the water table and drainage, the flight-path acoustics, and any contamination or heritage overlay. Those set the build.
We build these fixed-price, licence HBL 487805C. We assess the lot, the water and the overlays before we quote, no allowances, no surprises.
Buildana manages the full granny flat process in Botany — 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 Botany from $150K
- CDC fast-track approval (10–15 business days)
- 400–700m² blocks — most qualify for 60m² granny flat
- Botany zoned R2 Low / R3 Medium (station precincts) / R4 (Wolli Creek, Mascot, Rockdale, Kogarah, Arncliffe high-rise)
- Fixed-price contract — design to handover
- M — engineered slab included
- Rental yield $480–$720/week (post-war stock supports siting) in Botany
- Free site assessment — near Bus to Mascot (T8, 2 km) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Respect the water table
The Botany Sands aquifer means an elevated water table on many blocks, so drainage and slab detailing matter more than two suburbs west. That is the first thing to get right on a Botany granny flat.
You are also under the airport flight path, so acoustic construction is worth pricing in, and remediated parcels near Port Botany carry contamination overlays. Each belongs in the feasibility.
Payback inside a decade
Get the ground right and Botany stacks up. 400 to 700m² blocks clear the 450m² SEPP threshold on most streets, and rents of $480 to $720 a week put payback inside a decade for many owners.
The heritage pocket around the village needs a check first. Send us the address and we will assess the lot, the water and the overlays before quoting.
Granny flat builder in Botany — key facts
- Suburb
- Botany, NSW 2019
- Council / LGA
- Bayside Council (Bayside)
- Primary zoning
- R2 Low
- Typical lot size
- 400–700m²
- Soil class
- M
- Median house price
- $1.7M–$2.6M
- Home era
- 1910s–1970s
- 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.
Quality Promise
Botany granny flat construction done to a schedule. CDC lodged, slab poured, handover complete — on one fixed-price contract.
How It Works
From First Call to Final Key
Free on-site assessment of your Botany property. We measure setbacks, check existing services, assess access, and confirm your 400–700m² block meets Bayside Council's requirements for a secondary dwelling.
⏱60m² sounds tight on paper but designs well — high ceilings, good cross-ventilation, smart storage, and proper bedroom proportions make a 2-bed feel generous. We design for daily liveability, not just floor plan compliance.
⏱CDC fast-track through a private certifier — typically approved in 10–15 business days. Botany is zoned R2 Low. Construction Certificate issued before works start.
⏱Your granny flat is built from slab to keys in a single programme. Engineered slab for Class M soil, frame, lock-up, fit-out, painting, flooring, and external works. Quality inspections at every stage.
⏱Defect-free inspection means we don't hand over a list to chase — every snag is fixed before keys move. Final clean, electrical and plumbing tested, smoke alarms certified, BASIX commissioning verified. The unit is rental-ready, not project-paperwork-ready.
⏱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.
Build a Granny Flat in Botany
Free site assessment for Botany 2019. We'll check your block, recommend the best design, and provide a fixed-price quote.
Start Your ProjectMore in Botany
Other Buildana services in Botany
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Botany 2019. Bayside Council regulations and local controls are covered on each page.