Ignore this page... it's just fine tuned to admin's strategy and difficult to explain/tailor for general internet use.

Funding An Accessible Granny Flat Build

Building a disability-friendly granny flat strategy; 1) build a 20-100% deposit using compound interest (see calculator below) and a diversified investment portfolio, and 2) buy a small block of land with a mortgage and build a 2 bed granny flat. Make extra repayments to pay off the mortgage quicker. After at least 10 years of saving, you wait (still saving while waiting) for the next housing downturn and buy. The trick is that you can save and use compound interest and not have large downturns (as you have a diversified portfolio) while the property market has flattened, and downturn periods. Property generally increases 4-7% per year and doubles every 7-10 years but in Sydney in the; - 1980s property dropped 24% (a good time to buy). - early 1990s an economic recession and over-supply caused a drop of 32%. - 2008 Global Financial Crisis dropped 13% + $7K First Home Buyers Grant. - 2020 Covid pandemic property prices didn't drop however their was a federal $25K home builder grant, NSW First Home Buyer Assistance ($0 transfer duty so save $20K?), and First Home Owner Grant ($10K grant for new homes). In summary, every 10-15 years there is a 25-32% drop in what it costs to buy a house.

Compound Interest Calculator

Enter your saving details;
Already saved (e.g. 10000):	$ < what you have in the bank, current investments, etc.
Year start (e.g. 2025):	< this is the year you had the above "Already saved" figure
Savings per year month week :	$ < this is money you save from your wage, dividends, etc. each year
Interest rate/dividend yield (e.g. 8):	% < your average interest across your whole portfolio
Number of years of saving:	1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 < you want to buy a house in X years

Enter your desired property details;
Value of house you want to buy (e.g. 700000):	$
Year when above value was made (e.g. 2025):
Year when property downturn occurs (e.g. 2033):
Percent downturn (e.g. 20):	% < property drops about 25% every 10 years or so
Property increase per year (e.g. 7):	% < property increases about 7% per year
Shared Equity Scheme (e.g. 40% from Govt. for a new build or 30% from Govt. for an existing build):	None Existing house = 30% from Govt. New build = 40% from Govt.
Inheritance or help from parents (lump sum received):	$

Tip: to save your details just copy or bookmark the page URL.

Savings Over 10 Years
Saved	Year	Tally Saved	Tally Saved With 0% Shared Equity (SE)	Tally Saved With SE + Inheritance
$20,000	2025	$31,600	$31,600	$81,600
$40,000	2026	$54,128	$54,128	$104,128
$60,000	2027	$78,458	$78,458	$128,458
$80,000	2028	$104,735	$104,735	$154,735
$100,000	2029	$133,114	$133,114	$183,114
$120,000	2030	$163,763	$163,763	$213,763
$140,000	2031	$196,864	$196,864	$246,864
$160,000	2032	$232,613	$232,613	$282,613
$180,000	2033	$271,222	$271,222	$321,222
$200,000	2034	$312,920	$312,920	$362,920