Home Extension Builder Jannali — From $150K Fixed Price
Fixed-price home extensions in Jannali 2226. Rear extension $150K–$300K, second storey $300K–$500K. Sutherland Shire Council approvals managed. Free site consult.
HIA Member
MBA NSW0476 300 300Jannali Home Extensions — Fixed Price
A home extension in Jannali grows the Shire family home in the valley — 1960s-1990s fibro and brick veneer on 550 to 800m² blocks where the rear wing adds the space the originals rationed and the rail keeps the commute a walk.
The fibro gets the licensed strip-out first, the junctions are engineered, and the bushland-valley setting stays.
At the $1.4M to $2.2M mid-tier, the wing beats the friction of upsizing deeper into the Shire.
We build these fixed-price, licence HBL 487805C. Ask us to measure what your block can hold.
Buildana manages the complete home extension process in Jannali — from design consultation and structural engineering through to DA or CDC approval, and fixed-price construction to handover. Extend your home without the stress.
Read our Home Extension Cost Guide 2026 or explore extension approval pathways in NSW.
- Home extensions in Jannali from $150K
- Sutherland Shire Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- Hawkesbury Sandstone bedrock — structural engineering included
- 1960s–1990s fibro/brick veneer predominant + 1990s–2010s brick (Menai/Bangor/Illawong/Alfords Point) + 2010s+ premium contemporary (Cronulla beachside/foreshore)-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Jannali station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The valley suburb's wing
Jannali's bushland-valley streets and rail walk are why families stay — and the rear wing adds the second living and bedrooms without giving either up.
The 1960s-1990s stock takes the additions confidently once engineered.
Fibro handled first
Where the original is fibro, the licensed asbestos strip-out leads the job — priced upfront, never discovered mid-build.
The junctions are engineered where new meets old.
Home extension 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 – $600,000+
- Typical timeline
- 6–12 months design to handover
- Approval pathway
- CDC for most rear extensions, DA for second-storey
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.
Jannali Extension — Free Consultation
Free design consultation for Jannali 2226. We'll assess your home, design the extension, 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.