As prices in the red-hot Sydney market continue to rise, so too has the pace with which the properties are being snapped up. Suburbs in Perth and Melbourne also made this top 30 list, however in a somewhat mediocre fashion compared to the New South Wales capital, according to CoreLogic RP Data.
Properties in all 30 suburbs are on the market for only 20 days or less, with units in Jannali, Kellyville and Heathcote going within two weeks.
These incredibly low numbers for average days on the market indicates these suburbs are highly sought-after and quickly snapped up by investors.
As the price for inner city suburbs continues to rise, it is not surprising that many first home buyers or average income households are looking outwards rather than in.
Almost all suburbs appearing in the top 30 were outside the inner ring of their city.
Outer Sydney suburbs like Kellyville, North Gosford and Lalor Park boast either a wide range of amenities, excellent transport infrastructure or both.
With so much bang for their buck, these suburbs are enticing to a wide demographic of people looking to secure property that meets all their needs.
Something else that is interesting to note is that properties in nine out of the top ten suburbs come under the Unit classification.
Once again, skyrocketing prices are causing many people to consider downsizing to live within their means.
Top 30 fastest-selling suburbs, according to CoreLogic RP Data
| Suburb | State | Type | Median Price | Time on Market (days) |
| Jannali | NSW | U | $545,000 | 10 |
| Kellyville | NSW | U | $615,000 | 12 |
| Heathcote | NSW | U | $550,000 | 14 |
| Revesby | NSW | U | $597,000 | 14 |
| Coolbellup | WA | U | $350,000 | 15 |
| South Penrith | NSW | U | $375,000 | 16 |
| Werrington | NSW | H | $447,500 | 17 |
| Telopea | NSW | U | $555,000 | 17 |
| Green Point | NSW | U | $393,000 | 17 |
| Summer Hill | NSW | U | $637,000 | 17 |
| Currans Hill | NSW | H | $456,200 | 18 |
| Lalor Park | NSW | H | $500,000 | 18 |
| Kilsyth South | VIC | H | $575,000 | 18 |
| North Gosford | NSW | H | $415,000 | 18 |
| Kariong | NSW | U | $340,000 | 18 |
| Acacia Gardens | NSW | H | $630,000 | 18 |
| Chelsea Heights | VIC | H | $515,000 | 18 |
| Bass Hill | NSW | U | $460,500 | 18 |
| Kings Langley | NSW | H | $693,500 | 18 |
| Avonsleigh | VIC | H | $360,000 | 18 |
| Tregear | NSW | H | $344,750 | 19 |
| Collbellup | WA | H | $525,000 | 19 |
| Ashfield | WA | H | $503,000 | 19 |
| Willmot | NSW | H | $334,000 | 19 |
| Werrington County | NSW | H | $460,000 | 20 |
| Maryville | NSW | H | $464,000 | 20 |
| Sutherland | NSW | U | $525,000 | 20 |
| Engadine | NSW | U | $527,000 | 20 |
| Berowra Heights | NSW | H | $780,000 | 20 |
| Scoresby | VIC | H | $555,600 | 20 |
