NSW secondary dwellings / granny flats
Find out if your lot qualifies
before you spend a dollar
A granny flat that hits every Housing SEPP standard can be approved by a registered certifier in about 20 days. Miss one standard and you're on the DA pathway — months longer, assessed on merit, and able to be refused. This tells you which one you're on, free.
Every threshold above is sourced from NSW Government pages — see the sources.
What it costs
Pay once. No subscription. A refused application or a wrong pathway choice costs thousands — this exists to prevent one of those.
Granny Flat Toolkit
AUD $97
one-time
Everything: the pathway and the plan, plus the compliance areas that actually get applications refused or blow out budgets.
- Full stage-by-stage roadmap, site assessment through to occupation certificate
- Cost breakdown with indicative NSW ranges and sources, and quote guidance where no public figure exists
- Eligibility indicator with every threshold sourced
- Setbacks and LEP floor-area variation pack
- Fire separation pack (critical for attached secondary dwellings)
- BASIX / NatHERS pack
- Bushfire (BAL) pack
- Common refusal reasons with plain-English fixes
- Document checklist with the right portals and certifier links
- Yours to keep - pay once, no subscription
Free · no signup
Kynric Trades Calculators
Buying the toolkit already? Grab the free concrete, framing and roofing calculators too — the same tools tradies use on site, handy for costing and planning your granny flat build.
Open the free calculators →The five stages
Stage names and the shape of each one are free. The working detail — what to do in what order, and where people lose money — is the paid part.
- 01Site assessmentWork out what your lot will actually allow before you pay anyone to draw anything.
- 02Design rulesThe numeric limits your design has to hit, and the ones that vary by council.
- 03Approvals pathwayCDC or DA. This single choice drives your timeline, your cost, and your risk.
- 04ConstructionGetting it built, inspected, and through the critical stage checkpoints.
- 05Occupation certificateThe paperwork that turns a finished building into one you can legally occupy or rent.
Also from Kynric
Free
Kynric Trades Calculators
61 free construction calculators - concrete, framing, roofing, unit conversions. Free, no signup, genuinely useful mid-build.
AUD $99
NSW Owner-Builder Companion
If you're owner-building the whole project rather than just adding a secondary dwelling: stage roadmap, budget calculator, risk pack, WHS examples.