Granny Flat Mortlake — Design, Approval, Build, Connection
Complete granny flat delivery in Mortlake 2137: design, CDC or City of Canada Bay Council approval, separate services connection, engineered slab, full build and handover under one fixed-price contract.
HIA Member
MBA NSW0476 300 300Mortlake Secondary Dwellings
A granny flat builder in Mortlake works with a riverside Canada Bay suburb where a secondary dwelling is about family or premium rental. The Federation and post-war stock sits on 400 to 800m² blocks, so the larger parcels clear the 450m² threshold for a 60m² secondary dwelling under the Housing SEPP. Heritage Conservation Areas cover several streets, and the river setting near the ferry makes a secondary dwelling here desirable.
The Wianamatta Shale ground behaves for the slab off geotech. Where the older home has fibro, a licensed asbestos strip-out comes first if demolition is involved. The Mortlake wharf and Putney ferry connection add to the tenant appeal.
What I check first on your Mortlake block: whether it clears 450m², whether you sit inside a Heritage Conservation Area, and the rear-yard access. Those decide the build.
We build fixed-price, licence HBL 487805C. Get our granny flat feasibility before you commit.
Buildana manages the full granny flat process in Mortlake — 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 Mortlake from $150K
- CDC fast-track approval (10–15 business days)
- 400–800m² blocks — most qualify for 60m² granny flat
- Mortlake zoned R2 Low / R3 Medium / R4 (Rhodes/Concord West)
- Fixed-price contract — design to handover
- M–H — engineered slab included
- Rental yield $550–$850/week in Mortlake
- Free site assessment — near North Strathfield (2 km) / Mortlake ferry to Putney station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
A desirable riverside secondary dwelling
Mortlake's riverside setting next to Breakfast Point makes a granny flat genuinely desirable here, and the larger blocks at 400 to 800m² clear the 450m² Housing SEPP threshold. A secondary dwelling near the ferry wharf lets well, whether to a premium tenant or as flexible family accommodation. The survey check leads, because the smaller blocks can fall short.
Heritage Conservation Areas cover several streets, so on a contributing home the heritage layer shapes what you build. I check that on your exact block first.
Shale and ferry access
The Mortlake ground is Wianamatta Shale, which behaves for the granny flat slab off geotech, with a licensed asbestos strip-out where the older home carries fibro and any demolition is involved. The Mortlake wharf and Putney ferry connection add a real lifestyle draw for tenants, which supports the yield on a well-built secondary dwelling. I design the access and private open space to keep it lettable.
Granny flat builder in Mortlake — key facts
- Suburb
- Mortlake, NSW 2137
- Council / LGA
- City of Canada Bay Council (City of Canada Bay)
- Primary zoning
- R2 Low
- Typical lot size
- 400–800m²
- Soil class
- M–H
- Median house price
- $1.9M–$3.5M
- Home era
- 1900s–1960s
- 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
We build Mortlake granny flats that hit the NSW 60m² maximum cleanly. Engineered slab, separate meter, rental-ready at handover.
How It Works
From First Call to Final Key
We inspect your Mortlake block — lot size (typical 400–800m²), setbacks, services, access, Class M–H soil check and City of Canada Bay Council requirements. You'll know if a granny flat is feasible before spending a dollar.
⏱Design phase covers layout, orientation on your Mortlake block, bathroom and kitchen placement, natural light, privacy screening, and entry path. You approve the design before we move to certification.
⏱Approval pack lodged with our preferred private certifier (Buildana works with several across the City of Canada Bay area). They've reviewed our designs before, know our documentation standard, and turn approvals around at the fast end of the legislated window.
⏱Construction runs 10–16 weeks from slab pour. Class M–H engineered slab, timber or steel frame, Colorbond roof, full internal fit-out, and separate service connections. Weekly updates from your project manager.
⏱Handover documentation includes everything you need to list with a property manager: OC, BASIX, structural cert, appliance manuals, separate metering details. Photos for the listing taken before furniture goes in. Most Mortlake GFs lease within 2 weeks.
⏱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
Mortlake Granny Flat — Free Site Check
Free site assessment for Mortlake 2137. We'll check your block, recommend the best design, and provide a fixed-price quote.
Start Your ProjectMore in Mortlake
Other Buildana services in Mortlake
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Mortlake 2137. City of Canada Bay Council regulations and local controls are covered on each page.