Ask across policy, place and data
Question planning instruments, judgments, development activity and socio-economic data in plain English. Keep the source beside the answer.
Resolving site
LOT12 // DP 758
ZONER2 LOW DENSITY
HOB9.0 M
FSR0.5 : 1
OVERLAYHERITAGE CONSERVATION
Planning · GIS · data analysis
Intelligent tools forarchitects, town planners, researchers, property investors, buyers and property teams.
Ask a question about a site, place or market. Plynth brings planning, GIS and socio-economic data together so you can test a thesis, trace the evidence and carry the result into your next decision.
The problem
A decision about place still starts with scattered data.
Planning controls, maps, development activity, census and market signals live in different systems.
Plynth connects parcel context, planning sources, spatial datasets and cited analysis in one connected workspace.
Scattered sources → one traceable analysisNCC · SEPP · LEP · DCPplanning policy coverage
indexed & cited
indexed & cited
2.4M+land parcels
controls & layers, queryable
controls & layers, queryable
79planning & infrastructure
map layers
map layers
140K+development applications
tracked nightly
tracked nightly
26.7M+socio-economic data points
census · income · SEIFA
census · income · SEIFA
Live in NSW · expanding nationally
Built for people who need to make their own call
Different questions, same rule: test the case against the data and keep the evidence traceable.
01 · Architect / planner
What applies here, and what does it change?
Resolve the site, inspect the controls and carry cited findings into design, advice and project documentation.
02 · Investor / buyer / developer
Does the evidence support the opportunity?
Compare planning constraints, development activity, demand, affordability and supply before forming your own view.
03 · Researcher / strategy team
What pattern holds across places or time?
Question spatial and socio-economic data, compare geographies and keep the sources and caveats beside each finding.
The proof
Ask. And watch the receipt assemble.
Intelligent citations view
>Can I build an 8.4 m dwelling at 12 Harbour St, and what applies to the lot?
AnswerCompliant · conditional
The maximum building height for this lot is 9 metres under the LEP height-of-buildings map. The proposed 8.4 m sits within it.
Floor space ratio is capped at 0.5:1. The heritage conservation overlay applies, so a Heritage Impact Statement is required.
Source● confidence 0.97
§ 4.3 Height of buildings(1) The objectives of this clause are to establish building heights ... the maximum height of a building must not exceed 9 metres as shown on the Height of Buildings Map.
LEP 2014 · v.2026-03Effective 12 Mar 2026Tier · Verifiedhash 7f3a...e10
Every answer is connected to the policy source that supports it.
From question to evidence
how it works · 3 steps01
Start with a place or question
Enter an address, select an area or ask a question. Plynth resolves the planning, spatial and data context that matters.
02
Test it against the evidence
Compare controls, development activity, demographics, market and supply signals, with the source kept beside each finding.
03
Carry the result forward
Turn the analysis into an editable, cited report with the map figure and controls attached.
The whole state, one working map.
planning · GIS platformPlynth brings planning, GIS, development and socio-economic data into one working map. Explore zoning, controls, hazards, transport, market and supply signals by place, with cited AI analysis alongside them.
01 · Spatial & mapping
79 planning and infrastructure layers, 3D building footprints, lot boundaries, hazards and heritage on one basemap.
02 · Planning & development
The live development pipeline: tracked DAs, approval outcomes and housing policy, per council, refreshed nightly.
03 · Analysis & comparison
Compare demographics, affordability, supply, transport and development activity across places, then ask what explains the difference.
Product features
the working surfaceWhat you can do
Build your own case from the data
Move from a question to cited analysis across policy, place, precedent, market and supply. Keep the evidence close enough to challenge and refine the work.
Compare places and test a thesis
Use demographic, affordability, supply, transport and market signals to compare suburbs and check whether a pattern holds.
Read the development pipeline around a site
140,000+ DAs across nearly every NSW council, coloured by outcome, plus 855 draft rezonings. Refreshed nightly.
Navigate the code, clause by clause
NCC 2025 and 2022, all volumes plus the Housing Provisions, indexed and browsable, with answers cited to the clause.
Draw the geography that matters
Select a lot or draw an area. Plynth builds an editable, cited report with the map figure and controls attached.
Connect "can I?" with "should I?"
Set planning constraints beside demand, affordability and supply signals. Use the combined view to inform your own assessment.
The numbers under the map
live from the databaseEvery figure below is counted from the production database. Together, they let users examine a site, compare places and test their own questions against a traceable body of evidence.
2,433,902+NSW land parcelseach resolved with zoning, controls and overlays
140,519+Development applicationstracked across nearly every NSW council, refreshed nightly
26.7M+Socio-economic data pointsspanning 10,100+ census, income and SEIFA indicators
79+Planning and infrastructure layerslive on the map, plus ten 3D analytics layers
2,813+Land & Environment Court judgmentsgrounding every cited answer
608,294+Biodiversity constraint polygonstriggering assessment flags
205LEP areaszoning, height and FSR mapped across all 132 LGAs
40,422+Heritage itemsand conservation areas on the working basemap
3Census vintages2011 to 2021, plus 24 years of population estimates
855+Draft rezoningstracked by stage across 98 NSW councils
225,772+Bushfire prone land polygonsmapped across the state
14Consolidated SEPPsevery one indexed and browsable in full
19,529+Infrastructure investment pointsmajor projects, mapped and budgeted
621Economic anchorsmines to renewables, with status and transition signals
7Analytics domains on every suburbdemographics to gentrification scoring
Counts as at July 2026 · development activity refreshes nightly
How Plynth is different
3 principles01
We resolve the site before we read the law.
Planning controls follow the land. Plynth resolves the site's spatial context: zone, overlays, heritage, flood and bushfire, so the answer is grounded in the controls that actually apply to this lot.
02
We separate what's measurable from what's a judgement call.
Deterministic checks return pass, fail or undetermined. Discretionary matters are surfaced as findings that require assessment: flagged for your professional judgement, never quietly decided for you.
03
Compliance status is assigned by code, not by a language model.
The final status is computed by a deterministic decision matrix. The model's job is to explain the result in plain English, not to decide it. That boundary makes the output auditable.
The law is a field. The land is its source.
field study · law follows landPlanning controls aren't documents, they're a field around the land.
Zoning, height, heritage, hazard: each radiates from the parcel and
is measurable at it. Resolve the lot, and the field becomes legible.
Trust is the product
You're never asked to trust the machine.
Every answer opens to an intelligent citations view: source instrument, section, effective date, confidence score, data tier and the exact words highlighted on the original page. Everything you need to check it, faster than you could find it yourself.
Primary public references
NSW legislation·NSW Planning Portal·National Construction Code·ABS Census
Source instrumentEffective dateConfidence scoreData tierExact words
Standing on the site? Ask from the kerb.
Resolve the lot you're standing on, check an overlay mid-inspection, and send the cited answer before you're back at the desk.
Launching with a limited early-access cohort. View the early-access offer
Available in early access
Cited, traceable AI answers across LEP, SEPP and NCC text
All 14 consolidated SEPPs, indexed and browsable
NCC 2025 + 2022 · all volumes, clause by clause
2,800+ NSW planning judgments grounding cited answers
GIS mapping · 79 layers, 3D footprints, hazards and heritage
Selected-area reports · editable, cited, exportable
Socio-economic intelligence · demand, affordability and supply
Neighbourhood-change and gentrification scoring
Shared Artifact Workspace · browse data views and their evidence
22 analysis recipes · grouped by task and ready to request after sign-in
On the roadmap
Roadmap · persistent project context from uploaded documents and datasets
Roadmap · save a proven process as a reusable, user-authored skill
Roadmap · dependable multi-step workflows across project context
Roadmap · automated report scaffolding (SEE, clause 4.6, HIS)
Frequently Asked Questions.
33.8688° S · 151.2093° E · wherever the site is
The answer, and the proof. Side by side.
Built for architects, planners, researchers and property teams who need to check the answer for themselves.