Private beta · Free for first 20 NSW properties

Can your NSW property
support a granny flat?

Get a free preliminary feasibility review covering zoning, lot size, access requirements, and key constraints — reviewed by our team.

What do you want to check?

Free during beta · NSW properties · We'll respond within 2 business days

Free beta review
Response in 2 business days
No account needed
Our review draws on
NSW Planning Portal SEPP Housing 2021 Local LEP & DCP data Sydney Water sewer maps Flood & bushfire overlays
How it works

Three steps to clarity.

No council portals. No planning consultants. Just a clear answer about your property.

Submit your property
Enter your address and contact details. Takes under 60 seconds.
Free during beta
We review manually
Our team checks zoning, overlays, lot size, easements, and CDC eligibility using official NSW planning data.
Within 2 business days
Receive your findings
A plain-English feasibility summary emailed directly to you — with constraints, opportunities, and next steps.
Delivered to your inbox
Example output

This is what your report looks like.

The report below shows the format of findings our team produces. Every submission receives this level of detail.

NSW · Granny flat
14 Banksia Street
Epping NSW 2121
Generated 28 May 2025 · 14:32 AEST
Report: BW-BETA-001
20 checks completed
82
Feasibility score
ZoningR2 ✓
Lot size720m² ✓
CDC pathwayEligible ✓
Flood overlayLow ⚠
SewerConnected ✓
HeritageNone ✓
Rear easement1.5m ⚠
Est. rental$640–680pw
Key metrics
60m²
Max granny flat GFA
SEPP compliant
$660pw
Estimated rental income
6 suburb comparables
~20 days
Typical CDC approval
$175–200K
Est. build cost
Zoning & LEP
ZoneR2 Low Density Residential
LEPHornsby Local Environmental Plan 2013
Min. lot size450m² · This lot: 720m² ✓ Complies
Max. height8.5m · Granny flat: ≤ 3.8m ✓
Planning Overlays
OverlayStatusImpact
Flood riskLow risk (NW corner)Minor — does not affect buildable area
Bushfire proneNot affectedNo additional requirements
HeritageNo overlayNo approvals required
Acid sulfate soilClass 5 — low riskNo additional requirements
CDC Pathway Assessment
SEPP check ✓
Certifier appt.
Design & plans
CDC lodgement
Approval ~20 days
✓ Complying development — no council DA required
Satisfies all SEPP Housing 2021 criteria. A private certifier can issue approval within ~20 business days. No neighbour notification required.
⚠ Rear easement — 1.5m drainage
Granny flat footprint must remain clear. A standard 60m² design is comfortably achievable on this 720m² lot.
Recommended Next Steps
1
Engage a CDC-accredited certifier
Confirm CDC eligibility on-site and obtain a fee estimate. Typical cost: $2,000–$3,500.
2
Commission architectural plans
A granny flat designer will prepare CDC-compliant drawings. Budget $3,000–$6,000.
3
Lodge CDC with accredited certifier
Approval typically issued within 20 business days. Construction can then commence.
20 data checks completed
NSW Planning Portal · May 2025
SEPP Housing 2021 applied
Example only — not your property
Common questions

Frequently asked questions

Everything you need to know about the Blockwise beta.

Our team manually reviews your property against zoning classifications, planning overlays (flood, heritage, bushfire), lot size requirements, sewer proximity, easements, and SEPP Housing 2021 CDC eligibility. You'll receive a written summary of findings with a feasibility verdict and recommended next steps.
No — our beta findings are a preliminary assessment to help you understand your property's potential before engaging formal planning consultants or certifiers. The information is based on publicly available planning data and is provided for general guidance only. Always engage a qualified planning consultant or certifier before making development decisions.
Currently NSW properties only, with a focus on residential zoned lots in metropolitan and regional areas. We prioritise R2, R3, and some R4-zoned properties. Coverage will expand to Victoria, Queensland, and South Australia later in 2025.
We aim to respond within 2 business days for all beta submissions. During busy periods this may extend slightly — we'll let you know if there's a delay. During the private beta, each property receives a personalised review rather than an automated response.
Blockwise is building an automated platform that will generate these reports instantly for any NSW property. Beta participants receive free reviews now, early access pricing when we launch, and priority access to new features including duplex, subdivision, and other development assessments.
Yes — you can submit multiple properties. Each submission is reviewed individually. If you're an agent or investor with several properties to assess, get in touch directly at blockwiseproperty@gmail.com and we'll prioritise your submissions.
Private beta · Free for first 20 properties

Know what your block
could do.

Submit your NSW property and we'll send you a free preliminary granny flat feasibility review — manually assessed by our team.

Free during beta · NSW properties · No account needed · Response in 2 business days

Real planning data
Expert manual review
Plain English findings