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Undercliffe St, Dee Why NSW 2099

Street

Street Summary

Living on Undercliffe St, Dee Why NSW 2099, you are on a street of houses only. 21 homes sit above the street; 1 homes sit level with the street; 2 homes sit below the street. There are insufficient recent house sales to calculate a reliable comparison against the suburb, so buyers should compare recent sales of individual homes on the street against nearby comparable properties.


PART 1
Street Profile

Property Type Mix

The mix of houses and apartments (units) that make up the Undercliffe St, Dee Why NSW 2099 property market.

Houses vs Apartments29 total lots
100%
Houses (100%)
Apartments (0%)
Townhouses/Villas/Unclassified (0%)

PART 2
Houses

"Houses" in this report includes detached houses, duplexes, and terraces.

Land Topography

How house lots on Undercliffe St, Dee Why NSW 2099 sit relative to street level — topography that affects drainage, flood risk, privacy, and build cost. Statistics are calculated from properties with available data.

High-side vs low-side house lots
High-sideFlatLow-side
21 lots
1 lots
2 lots
High-side (1m above)
Flat
Low-side (1m below)

Risks &Overlays

See which key planning overlays and environmental risks affect this street before you buy.

Heritage
0 houses affected
Bushfire
0 houses affected
Flood
0 houses affected
High voltage power line
0 houses affected

Street Sales - Houses

Actual house sales on Undercliffe St, Dee Why NSW 2099 over the past 5 years, plotted against the Dee Why NSW 2099 median house price trend over the same period.

Street sales vs suburb median
Street SalesSuburb Median Price
$0$2.5M$5.0M$7.5M$10.0MSept 21May 23Jan 25Sept 26$2.5M · 2022$2.5M · 2023$2.9M · 2024$2.8M · 2025$2.4M · 2026$2.5M · 2022-09-13 · 25 UNDERCLIFFE ST, DEE WHY NSW 2099$2M · 2026-02-09 · 3 UNDERCLIFFE ST, DEE WHY NSW 2099$6.3M · 2022-04-07 · 31 UNDERCLIFFE ST, DEE WHY NSW 2099$5.3M · 2024-02-28 · 33 UNDERCLIFFE ST, DEE WHY NSW 2099
Turnover rate13.8%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Undercliffe St, Dee Why NSW 2099 over the past 5 years, plotted against the Dee Why NSW 2099 median apartment price trend over the same period.

Street sales vs suburb median
Suburb Median Price
$0$500k$1.0M$1.5M$2.0MSept 21May 23Jan 25Sept 26$903k · 2022$885k · 2023$932k · 2024$1.1M · 2025$1.1M · 2026
Apartment sales0Past 12 months
Turnover rate0%Past 5 years

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Living in Undercliffe St, Dee Why NSW 2099 : Street Profile & FAQs

Common questions about living on and buying property on Undercliffe St, Dee Why NSW 2099 — lifestyle, transport, and the local housing market.

Note: Data is sourced from the Australian Bureau of Statistics (ABS) 2021 Census data and knest.ai internal statistical data.

Is Undercliffe St an expensive or affordable street relative to Dee Why?

There are insufficient recent house sales on Undercliffe St to calculate a reliable premium or discount against the Dee Why average. Buyers should compare recent sales of individual homes on the street against nearby comparable properties to gauge current market positioning.

What are the risk and overlay factors on Undercliffe St?

There are no bushfire, heritage, flood overlay, flood check recommended, or high-voltage overlays on Undercliffe St. However, 29 properties fall under other flood classifications, which means no flood risk has been identified or the property has not been mapped. Buyers should review council mapping and insurance costs before purchasing.

Are properties on Undercliffe St mostly on high, level or low ground?

21 homes sit above the street; 1 homes sit level with the street; 2 homes sit below the street. Different site heights relative to the street can influence site characteristics, but buyers should assess the specific property rather than relying on the street average.

What type of road is Undercliffe St?

Undercliffe St is a local road. Local roads generally serve nearby residents and connect local streets with larger roads. Buyers should consider that local roads typically have lower traffic volumes, though actual traffic levels and noise depend on the specific property location.

Is Undercliffe St mostly houses or apartments?

There are 29 residential properties on Undercliffe St. Houses make up 100% of the residential stock, while apartments make up 0%. The street is predominantly houses.

What are the major apartment developments on Undercliffe St?

No major apartment developments are recorded on Undercliffe St. The street's residential character is defined entirely by its house stock.

How many properties have sold on Undercliffe St?

1 house sold in the past 12 months, while 0 apartments sold. The 5-year turnover rate for houses is 13.8%, representing the proportion of properties that changed ownership during the past five years. Apartment turnover data is unavailable.

Is Undercliffe St a good street to buy property on?

Undercliffe St is a local road street with 29 residential properties, all of which are houses. It features a mix of homes sitting above, level with, and below the street. Buyers looking for detached houses on a quiet local road may find it suitable, while apartment buyers will not find stock here.