Architecture on Show – Shrink That Footprint

UPDATE – 27/08/14

On the 20th of August, Duncan presented a talk at Mosman Library, about the role of architects in encouraging inner-city Sydney councils to be more receptive to the idea of higher-density housing, in order to increase sustainability.  Here is a summary of the presentation!

How Big is a House?

This is the average house size, bear in mind that there are a large number of studio, one bedroom and two bedroom apartments in this statistic, so consequently there are some very big houses at the other end of the scale in order to achieve the average of 214 m2.

But this is not the whole story – you could argue that there are more people living in these larger houses so we need to look at the floor area / person of the average house.

2_HOW BIG IS A HOUSE?
How Much Space is Enough?

The average across all the countries shown here is 45 m2/person.

Even if you exclude the three highest and three lowest as extreme examples, the average figure would be 42 m2/person.

Therefore, taking that average, the average size of a home for say, four people, two adults and two children, would be between 168 m2 to 180 m2, depending on which figure was used.

If we use the Australian average of 89 m2, the home for 4 people would be 356 m2.

That is twice the size of the house using the 45 m2/person.

It stands to reason that a house that is half the size will be somewhere in the order of half the costs to build – to some extent.

3_How Much Space is Enough?
4_How Much Space is Enough?
A Smaller Home

Apart from the obvious benefit of less cost to build – here are some other benefits that stem from building a smaller home.

6_A Smaller Home
Lower North Shore

The locality is well placed for an increased density as it is close to the City and has good transport links, especially for those on the southern slopes of Mosman, Cremorne and Neutral Bay, which have good pedestrian access to the ferries.

 

In a recent Discussion Paper by the McKell Institute looking at housing in Sydney over the next 20 years, the following recommendations were given:

1. The new Metropolitan Strategy must have primacy over the LEP’s of all Councils

2. A focus on Transport Orientated Development is already underway. Increased density along the train line – all the way along the north shore-line.

3. A return to Dual Occupancy – a difficult one to sell to the Local Councils

4. Objective code-assessable approach to development – again already under way with the Complying Development Codes and this is also proving difficult with Councils

5. The submission calls for a focus on terrace and semi-detached housing as a solution to increasing the density in existing suburbs and providing homes that people can afford.

6_MAP OF LOWER NORTH SHORE
Mosman 2011 Census

Surprisingly the mix of homes in Mosman is somewhat at odds with most people’s preconceptions.

48 % flats, units or apartments and 13 % semi-detached dwelling accounts for 61 % of the housing stock. Only 39 % is free standing homes.

I think there is scope to increase the density in that 13 % of semi-detached houses and some of the 39 % of fee standing houses.

7_MOSMAN 2011 CENCUS
Subdivision

An example of sub-division or dual-occupancy.

8_SUBDIVISION OR DUAL-OCCUPANCY
Castle Cove House

4 people sharing house: 33.25 m2/person

9_PLAN
10_FRONT
11_BACK
12_DINING
13_LIVING
Wollstonecraft House

Up to 4 people sharing house: 37.5 m2/person

14_PLAN
15_SIDE
16_BACK
17_KITCHEN
18_DINING
19_BEDROOM
20_KIDS’ BEDROOM
21_ROOFSCAPE
22_ROOFSCAPE
Cremorne House

Can be up to 4 people sharing house: 39.45 m2/person

23_PLAN
24_ROOFSCAPE
25_BACK
26_INDOOR/OUTDOOR
27_INDOOR
Naremburn House

4 people sharing house: 30.6 m2/person

28_PLAN
29_FRONT
30_BACK
31_OUTDOOR
32_KITCHEN
33_DINING + KITCHEN
34_LAUNDRY
Willoughby House

4 people sharing house: 45.5 m2/person

35_PLAN
36_FRONT
37_BACK
38_LIVING
39_DINING
40_BEDROOM
41_WORKSPACE
42_BEDROOM
Alexandria House

Can be up to 4 people sharing house: 39.5 m2/person

43_PLAN
44_FRONT
45_OUTDOOR
46_LIVING + DINING
47_KITCHEN
48_OUTDOOR KITCHEN
49_CIRCULATION + WORKSPACE
50_BEDROOM
51_BATHROOM
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