Suburbs that could jump 30% in value revealed

By doing so, according to the report, property owners can add up to around 30 per cent to the value of the property.

Tim Lawless, head of research at CoreLogic, said that constructing granny flats has become an “increasingly compelling proposition” for property owners.

“Not only can it help to manufacture new capital gains, but it has the potential to generate rental income while meeting demand for more affordable housing,” Mr Lawless said.

“Many properties identified as suitable for a granny flat are in densely populated and traditionally expensive areas, such as Sydney’s Northern Beaches or Hornsby.

“More granny flats on the rental market will make it easier for young people to stay in their preferred area, rather than move further afield to find value for money.”

Robert Coorey, co-founder of Archistar, said that many property owners were “sitting on a pot of gold” due to owning enough land that could be turned into an additional revenue stream.

“This has wider economic benefits for renters who want to access popular suburbs without paying a premium,” he said.

“The family benefits of a secondary residency can’t be overlooked, whether that’s giving adult children more privacy while they save for a mortgage, keeping loved ones close as they become more reliant on care or having additional accommodation for overseas visitors.”

“What is a relatively small outlay for home owners could boost the construction industry to the tune of $87.5 billion and accommodate the growing population in some of the cities’ most popular suburbs.”

The report also identified the top 20 suburbs for granny flat potential in Sydney, Melbourne and Brisbane:

Sydney

Out of the three major capital cities, Sydney held the greatest potential for adding a granny flat to a property at 233,218 properties, or 15.9 per cent.

The suburb with the greatest potential in the state was Castle Hill, with 4,670 dwellings ripe for subdividing. Nearby Baulkham Hills came in second at 4,462 properties.

Proportion-wise, Dennison West held the greatest potential at 50.3 per cent of properties, followed by Davidson at 47 per cent.

St Clair was considered to be the most affordable for subdivision, at a median price of $610,622 and an average land size of 638 square meters, and the highest yielding for rentals at 3.9 per cent.

The top 20 suburbs in Sydney for granny flat potential by number of properties that have enough space to include a granny flat, according to CoreLogic and Archistar, are:

1. Castle Hill
2. Baulkham Hills
3. Carlingford
4. Cherrybrook
5. West Pennant Hills
6. Blacktown
7. Frenchs Forest
8. St Ives
9. Wahroonga
10. Epping
11. Ryde
12. St Clair
13. Kellyville
14. Seven Hills
15. Quakers Hill
16. Turramurra
17. Pymble
18. Eastwood
19. Greystanes
20. Beecroft

Melbourne

Of the three major capital cities, Melbourne suburbs had the smallest proportion and number of properties suitable for subdivision at 7.2 per cent (145,625 properties).

Mount Eliza has the most amount of subdivisible properties available at 2,584 but is far away from the affordable end of town with a median value of $1,161,700.

Meanwhile, Merrick’s Beach is home to the largest proportion of subdivisible properties at 47.3 per cent, with a median property value of $806,779.

Cockatoo was found to be the most affordable Melbourne suburb that could also be subdivided at a median value of $615,124 with 29.2 per cent of properties able to be subdivided.

In terms of rental yields, Belgrave offered investors a gross rental yield of 3.9 per cent, with a median value of $635,876 and 38.2 per cent of properties able to add a granny flat.

The top 20 suburbs in Melbourne for granny flat potential by number of properties that have enough space to include a granny flat, according to CoreLogic and Archistar, are:

1. Mount Eliza
2. Eltham
3. Mount Martha
4. Glen Waverley
5. Rowville
6. Frankston
7. Doncaster East
8. Greensborough
9. Mount Waverley
10. Templestowe
11. Endeavour Hills
12. Wheelers Hill
13. Berwick
14. Frankston South
15. Mooroolbark
16. Ferntree Gully
17. Doncaster
18. Templestowe Lower
19. Boronia
20. Mornington

Brisbane

The Brisbane area was the major capital city with the highest proportion of properties that held potential for granny flat inclusion at 21.6 per cent of all properties, or 204,598 properties.

The Gap was the suburb that held the largest number of properties that could include a granny flat at 2,784, or 42.8 per cent, while proportion-wise Ferny Hills has the largest portion of the suburb with granny flat potential at 69.5 per cent.

The most affordable suburb with granny flat potential was Gailes with a median value of $275,037 and having 397 properties with enough space for a granny flat, representing 50.8 per cent of properties in the suburb.

Meanwhile, Kingston, with its median value of $289,193, offers investors the highest yield for suburbs with subdivision potential at 6.2 per cent, with 747 properties able to be subdivided, or 44.1 per cent of properties in the suburb.

The top 18 suburbs in Brisbane for granny flat potential by number of properties that have enough space to include a granny flat, according to CoreLogic and Archistar, are:

1. The Gap
2. Albany Creek
3. Morayfeld
4. Deception Bay
5. Kallangur
6. Alexandra Hills
7. Redbank Plains
8. Narangba
9. Rochedale South
10. Ferny Hills
11. Sunnybank Hills
12. Aspley
13. Chapel Hill
14. Inala
15. Bray Park
16. Strathpine
17. Kingston
18. Petrie