Low Density Residential dominant. Median sale $1.07M over the last 24 months. 84% of decided DAs approved.
Need a builder, surveyor or planner near Dee Why? See local experts ↓
Zoning
Dee Why is dominated by R2 — Low Density Residential. Land use rules, height, FSR, and permitted developments are set per zone in the Local Environmental Plan and refined by the Development Control Plan.
Limit varies by lot — check your address for the exact figure.
Floor Space Ratio — total floor area as a multiple of lot area.
Location
Dee Why 2099 covers an undefined area within Northern Beaches Council.
Drill into any lot in Dee Why
Open the interactive map — click any address to see its zone, height, FSR, overlays, and approval likelihood.
Development potential
We score every lot for development signal — under-built relative to the controls, eligible for a granny flat, or sized for subdivision.
lots with remaining GFA capacity
under SEPP (Housing) 2021
lots that may support subdivision
adjoining lots with combined upside
show at least one development signal
within a TOD corridor (uplift expected)
average uplift signal across the suburb · 2 high-signal lots
Theoretical capacity if every lot built to its limit: 5,769 dwellings, with 394,971 m² of unused GFA across the suburb.
Own a property in Dee Why?
Check your lot's exact development potential — height, FSR, granny flat, subdivision, dual-occ.
Constraints & risks
1% of lots carry heritage controls; also: 0.1% of lots intersect a Threatened Ecological Community; 0.1% of lots are exposed to projected sea-level rise.
Suburb-wide percentages — your specific lot may have all, some, or none of these.
Mapped flood-prone land
RFS bushfire-prone land mapping
Heritage item or Conservation Area
Within 100 m of EPA-listed site
Mapped TEC vegetation
Coastal hazard mapping
ANEF / aircraft noise
Gutter cleaning service · serves Dee Why, NSW
47, Unit 4/49 Oaks Ave, Dee Why NSW 2099
Market
Sales, rent, and yield data drawn from NSW Property Sales Information and rental bond data over the past 24 months.
DA activity
196 development applications for Dee Why addresses were decided by Northern Beaches Council over the past 24 months. 164 approved — a 84% approval rate. Average processing time: 53 days.
Demographics & lifestyle
ABS Census 2021 population data combined with lot-level amenity, healthcare, lifestyle, and crime indices.
Walkable amenity within 1 km
GP / hospital / pharmacy proximity
Cafés, parks, schools, transport
ZoneDSS Marketplace
57 businesses serving Dee Why and nearby.
Gutter cleaning service
47, Unit 4/49 Oaks Ave, Dee Why NSW 2099
Painter
70-72 Howard Ave, Dee Why NSW 2099
Roofing contractor
Sturdee Parade, Dee Why NSW 2099
Roofing contractor
13 Wheeler Parade, Dee Why NSW 2099
Electrician
31 Pacific Parade, Dee Why NSW 2099
Insurance broker
The Crescent, Dee Why NSW 2099
Run a local business? Get found by property owners researching Dee Why.
List your business — freeFAQs
Dee Why is dominated by the R2 (Low Density Residential) zone, which covers 1,664 of 2,491 lots (67%). The full mix is: R2 Low Density Residential (67%), R3 Medium Density Residential (24%), MU1 Mixed Use (6%), RE1 Public Recreation (2%), E1 Local Centre (1%).
Across Dee Why, the average maximum building height is 9.6 m and the average maximum Floor Space Ratio (FSR) is 2.92:1. Individual lots can vary materially — height and FSR are set per zone in the Local Environmental Plan (LEP) and can be modified by overlays. For an exact figure on a specific address, generate a planning report.
Yes — 2,163 lots in Dee Why appear eligible for a granny flat under SEPP (Housing) 2021, based on lot size, zoning, and frontage. Eligibility is lot-specific: get a planning report on your address to confirm.
The median sale price in Dee Why over the past 24 months is $1,065,000, across 1,087 sales. Median unimproved land value is $1,980,000.
Median weekly rent for a house in Dee Why is $1,088. Gross rental yield works out to 5.0%.
Northern Beaches Council decided 196 development applications for Dee Why addresses over the past 24 months, with 164 approved (84% approval rate). Average processing time is 53 days. Processing time depends heavily on application complexity, council backlog, and whether the application requires referral to other agencies.
Across Dee Why, 1% with heritage controls, 4.4% bushfire-prone, 0.7% near contaminated sites. These are suburb-wide percentages — every lot has its own combination. A planning report on a specific address shows exactly which controls apply.
123 of 2,491 lots in Dee Why show identifiable development potential — under-developed for the planning controls, eligible for a granny flat, or capable of subdivision. 161 lots fall within a Transport Oriented Development corridor. Average rezoning signal score: 30.6 / 100.
Continue exploring
Compare zoning, development potential, and DA activity across other suburbs in Northern Beaches Council and nearby postcodes.
Painter · serves Dee Why, NSW
70-72 Howard Ave, Dee Why NSW 2099
Suburb-wide stats are useful for context. For a buy-or-walk decision on a specific lot, you need every control, every constraint, and every clause cited to source.
Run a report — from A$2914-section report · LEP + SEPP + DCP cross-referenced · cited to source
Verify with official sources
Don't take our word for it. Every figure on this page is computed from authoritative New South Wales Government data — and you can verify any of it directly with the source.
Official zoning, height, FSR, and overlay maps for any NSW address. The primary source for everything on this page.
planningportal.nsw.gov.au
Cadastral lot boundaries, aerial imagery, easements, and environmental overlays from NSW Spatial Services.
maps.six.nsw.gov.au
State-listed heritage items and Heritage Conservation Areas. Search by suburb to see what's listed in Dee Why.
hms.heritage.nsw.gov.au
Sites notified to the EPA under the Contaminated Land Management Act. Critical for due diligence on any address.
apps.epa.nsw.gov.au
Rural Fire Service map of bushfire-prone land categories. Triggers BAL assessment requirements for new builds.
rfs.nsw.gov.au
Australian Bureau of Statistics QuickStats for postcode 2099 — population, age, household composition, income, tenure.
abs.gov.au
Zoning, height, FSR, and overlays parsed from the Northern Beaches Council Local Environmental Plan, applicable State Environmental Planning Policies, and the Development Control Plan. Property sales drawn from NSW Property Sales Information. DA history aggregated from the NSW Planning Portal. Heritage, flood, bushfire, contaminated land, TEC, sea-level rise, and aircraft noise overlays from the NSW Spatial Services and EPA registers. Population, age, income, and tenure from ABS Census 2021. Aggregated by ZoneDSS · last updated 2026-04-27.
Suburb-wide statistics — your specific lot may vary. Always run a planning report on the actual address before making a decision. How ZoneDSS works →