Licensed Granny Flat Specialist Jannali
NSW licensed builder delivering SEPP-compliant granny flats across Jannali 2226. BASIX, engineered slab (Class Hawkesbury Sandstone bedrock), full certifier sign-off and 6-year structural warranty.
HIA Member
MBA NSW0476 300 300Quick Answer
A granny flat in Jannali 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, Sutherland Shire Council approval and fixed-price construction.
Jannali Granny Flat Construction — Fixed Price
A granny flat builder in Jannali works with the quiet residential suburb backing onto the Georges River foreshore at Como — 1960s–1990s fibro and brick veneer on 550 to 800m² R2 blocks. Most clear the 450m² Housing SEPP threshold for a 60m² secondary dwelling, and the station makes a studio let steadily.
Two things shape the job here. The foreshore lots have water frontage, so the Foreshore Building Line and a Crown Lands referral apply on river-frontage works. And the stepped, sloping blocks toward the river mean a deeper substructure scope. The main cost to price properly is the sandstone.
The soil is Hawkesbury Sandstone bedrock, so footings are engineered off a real geotech, with a deeper substructure on the stepped blocks. The fibro stock means asbestos is likely, so a licensed strip-out leads where any demolition is involved.
We build fixed-price, licence HBL 487805C. Foreshore, rock and fall scoped first.
Buildana manages the full granny flat process in Jannali — 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 Jannali from $150K
- CDC fast-track approval (10–15 business days)
- 550–800m² typical; 600–1,000m² premium beachside/foreshore (Cronulla/Burraneer/Lilli Pilli/Yowie Bay/Caringbah South/Sylvania Waters); 700–2,000m² bushland-fringe (Bundeena, Maianbar, Bangor, Menai) blocks — most qualify for 60m² granny flat
- Jannali zoned R2 Low Density predominant / R3 Medium Density on Cronulla/Caringbah/Miranda/Kirrawee/Sutherland/Engadine station precincts / E3/E4 Environmental on Royal NP fringe
- Fixed-price contract — design to handover
- Hawkesbury Sandstone bedrock — engineered slab included
- Rental yield $480–$650/week mid-tier; $520–$700/week Sutherland Hospital staff pockets; $580–$850/week Cronulla beachside short-stay pivot in Jannali
- Free site assessment — near Jannali station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Quiet riverside blocks
Jannali's 550 to 800m² R2 blocks mostly clear the 450m² Housing SEPP threshold, so a 60m² secondary dwelling works well.
The station makes a studio let steadily.
Foreshore and sandstone
Foreshore lots carry the Foreshore Building Line and a Crown Lands referral, and the stepped blocks toward the river mean a deeper substructure.
The Hawkesbury Sandstone bedrock is engineered off a geotech, and the fibro stock means a licensed asbestos strip-out where demolition is involved.
Granny flat builder in Jannali — key facts
- Suburb
- Jannali, NSW 2226
- Council / LGA
- Sutherland Shire Council (Sutherland Shire)
- Primary zoning
- R2 Low Density predominant
- Typical lot size
- 550–800m² typical; 600–1,000m² premium beachside/foreshore (Cronulla/Burraneer/Lilli Pilli/Yowie Bay/Caringbah South/Sylvania Waters); 700–2,000m² bushland-fringe (Bundeena, Maianbar, Bangor, Menai)
- Soil class
- Hawkesbury Sandstone bedrock
- Median house price
- $1.4M–$2.2M mid-tier; $1.8M–$3.8M foreshore; $2.5M–$6.0M+ Cronulla/Burraneer/Lilli Pilli/Caringbah South premium beachside
- Home era
- 1960s–1990s fibro/brick veneer predominant + 1990s–2010s brick
- 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 |
|---|---|
| Attached granny flat | $160,000 – $220,000 |
| Detached granny flat | $190,000 – $260,000 |
| Above-garage granny flat | $230,000 – $300,000 |
| Premium detached (upgraded finishes) | $260,000 – $320,000 |
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. Get them wrong and you're chasing certifier RFIs for months. Buildana checks every constraint before recommending a position.
⏱We design your granny flat to maximise the 60m² allowance within Sutherland Shire Council's setback and POS requirements. Floor plan, elevations, and 3D render provided. Studio, 1-bed, or 2-bed configurations available.
⏱CDC pathway exists specifically for compliant granny flats — use it. No neighbour notification, no Sutherland Shire Council planner queue, no committee politics. Certifier checks the design against the code; if it complies, it approves. 10–15 business days, every time.
⏱Fixed-price build: slab (Class Hawkesbury Sandstone bedrock engineered), frame, roof, fit-out, connections. 10–16 weeks depending on size. Minimal disruption to your existing home.
⏱Walk through your finished granny flat, collect keys. Occupation Certificate, 6-year structural warranty, and maintenance guide provided. List for rent immediately — typical demand in Jannali fills vacancies fast.
⏱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.
Jannali Granny Flat — Free Site Check
Free site assessment for Jannali 2226. We'll check your block, recommend the best design, and provide a fixed-price quote.
Start Your ProjectMore in Jannali
Other Buildana services in Jannali
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Jannali 2226. Sutherland Shire Council regulations and local controls are covered on each page.