Calculating max number of dwellings on a block?

We know that this is a how long is piece of string/depends question,

but assuming no easmenets, square block, no setbacks,

assuming zone 1 res, (yes each state is different)

if you are building townhouses, then is there a minimum lot size that in terms of design that you work off?

Ive heard some people fit 3 x 3bdr townhouses on a 600sqm block

or does it depend on how good your architect is?

Most councils have minimum lot sizes, this is in relation to subdivison.

When it comes to duplex/townhouses it depends on the councils minimum size for that building type.

You must look at councils rules.

Even though you may meet the size requirements you might not have the correct frontage. However, council can look at each site on merit.

In short: go check with council.

In NSW you want to check the DCP rules regarding townhouses.

Yes the DCP will assist you in determining what you can fit. Requirements for private open space, car parking and floor space ratios will be the main factors determining how many you can fit (assuming multiple dwellings are permissible in the first place). Usually a low density residential zoning will not allow any more than two dwellings on a single lot.

TMNT said:

We know that this is a how long is piece of string/depends question,

but assuming no easmenets, square block, no setbacks,

assuming zone 1 res, (yes each state is different)

if you are building townhouses, then is there a minimum lot size that in terms of design that you work off?

Ive heard some people fit 3 x 3bdr townhouses on a 600sqm block

or does it depend on how good your architect is?

Click to expand...

This isn't the way your though process on developing should begin. There's 600m2 blocks them there's 600m2 blocks.

It depends on the shape, the frontage, the location, council GFA requirements, setback allowances... List goes on.

The DCP is the place to start. Some councils require 300m2 per dwelling but you can squeeze 3 onto an 850-870 m2 block if you're lucky.

Others require a certain frontage (as well as size of block and other requirements) to allow multi-occupancy.

There are performance outcomes which a development must meet and there are acceptable outcomes which describe how you can most easily satisfy the Council's performance outcomes. In a lot of cases you can also propose alternate outcomes that meet the performance outcomes.

There may be a requirement that private open spaces must be at least 40 square metres and no less than 5m in any one direction. However if you can only manage 4.5m in one of the directions and 20m in the other you can state the case that while you are just under the minimum in one aspect, you exceed the other requirement and that it is justifiable.

When I started I thought it was about making a development fit the Council rules but they have ultimate discretion and now I realise the whole DA process is about convincing them to let you build what you want. Argue on the basis of how it will benefit the occupants and refer to other buildings that have done what you want to do.

perth

Just on this with Perth.

Is there not a 'rule' saying if you have 1000(x)sqm you can fit (z)4x250 properties on?

Is it all dependent and individually/uniquely assessed by each council for that given area?

Does it cost money to get the council to come out to your property to see if another dwelling can be placed on the property or thus can it be subdivided?

Z6

z611143 said:

Just on this with Perth.

Is there not a 'rule' saying if you have 1000(x)sqm you can fit (z)4x250 properties on?

Is it all dependent and individually/uniquely assessed by each council for that given area?

Does it cost money to get the council to come out to your property to see if another dwelling can be placed on the property or thus can it be subdivided?

Z6

Click to expand...

No Perth is totally different.

You will be able to know exactly what you can fit on it usually on your own

Each property will have a zoning from R5 to R100. You can find out properties zoning's here

http://mapsolutions.com.au/intramaps/intramaps-public.aspx

or councils own maps ie city of bayswater.

Then put your feet up and have a read of this document at least 30 times to get your head around what each zoning means and what you can fit on a block.

http://www.planning.wa.gov.au/dop_pub_pdf/State_Planning_Policy_3.1-Residential_Design_Codes.pdf

Also check the councils town planning scheme TPS for additional information and density bonuses that may catch you out.

Hope this helps.