Building smaller is not settling for less. It is choosing where your money goes, and it usually produces a better house: fewer rooms nobody uses, lower running costs, less to maintain, and a budget that stretches to the things you actually touch every day.
This guide is about designing a small or affordable home in Perth — what “small” really costs, how to plan a modest footprint so it lives well, and where the savings are genuinely worth taking.
What “small” means in practice
Small is about usable space, not just floor area.
- A tight, well-planned 100 square metres can live better than 150 square metres laid out carelessly. What separates them is circulation, storage and daylight.
- Footprint matters as much as area. Two levels on a narrow lot can leave a bigger garden than a single sprawling level, but stairs and structure add cost.
- Room count is a decision, not a default. A second living space, a study or a fourth bedroom should earn its place. Rooms that are used twice a year are the most expensive square metres in the house.
Where the money should go
When the budget is finite, spend it in this order:
Fabric first. Insulation, glazing, shading, draught sealing and efficient services are the cheapest comfort you will ever buy. They lower bills for the life of the house and are disruptive to add later.
Layout second. Getting orientation, room sizes and circulation right costs nothing extra at design stage and cannot be fixed after handover.
Structure and services third. Simplifying the roof form, stacking wet areas and keeping plumbing in one zone reduce both material and labour — savings that do not show.
Feature finishes last. They are the easiest thing to upgrade in five years, and the easiest thing to overspend on at the start.
Designing a small home that lives well
- Turn the plan to the sun. Living spaces facing north, bedrooms and utility areas taking the harsher east and west. In Perth, this single decision changes how comfortable the house feels for most of the year.
- Use every edge. Alcoves, deep window reveals, built-in joinery, under-stair storage and full-height cupboards earn their space. Corridors and oversized entries do not.
- Let rooms do two jobs. A study that becomes a guest room, a dining table that doubles as a workbench, a laundry that handles school bags and bikes.
- Borrow light and air. High-level windows, skylights and openings that let air travel through the plan rather than around it make a small home feel generous.
- Push the living space outside. A courtyard, deck or verandah is the cheapest extra room you can add, and in Perth it is usable for most of the year.
- Keep ceiling heights sensible. Volume costs money to build and to heat; good light and outlook usually matter more.
Small homes on Perth blocks
Most modest budgets in Perth come with a modest site, so the block often shapes the design:
- Narrow lots and infill call for a deep, efficient plan with living areas pushed to the north and service spaces to the south.
- Corner and battle-axe blocks offer extra frontage or privacy that a clever plan can use — or that a careless one wastes.
- Sloping sites can be an advantage: split levels reduce earthworks and can create defined zones without extra area.
- An additional small dwelling — a studio, sleepout or ancillary unit — suits some blocks, subject to what your local government allows. It is worth checking before you buy rather than after.
- Existing houses are sometimes the cheapest small home you will ever own, rearranged rather than rebuilt.
Sustainability gets easier when the house is smaller
A smaller home is inherently lower impact: less material, less embodied carbon, less to heat and cool, less to replace over time.
On top of that, the same passive principles apply as on any project — summer sun kept out, winter sun let in, night air able to purge the house, and the building fabric doing most of the quiet work. On a small home these measures are cheaper to implement and their effect is proportionally larger.
Add the practical future-proofing while you are building: solar, a battery, EV charging, and layouts that can adapt as a household grows, shrinks or ages.
Questions worth asking any architect
| Question | Why it matters |
|---|---|
| What is the smallest plan that does what we need? | It tests whether they will design to your budget or to a template. |
| Where would you spend money if this were your house? | The answer reveals whether they think in priorities or in finishes. |
| How will you make a small plan feel open? | Light, outlook and circulation are the levers. |
| What will this cost to run, not just to build? | Comfort and running costs are designed, not installed. |
| What can we add later without disruption? | Solar, storage, another room — plan the seams now. |
| What does my block and council allow? | Site cover, setbacks, overshadowing and extra dwellings all vary. |
Where we work
Office of Regional Architecture is an accredited architectural practice. Our head office is now in Perth, and we design homes, renovations and additions across the Perth metro area, while continuing to work with homeowners, communities and businesses throughout regional Western Australia. Our projects span residential, community, commercial, heritage and landscape work, and sustainability runs through all of it — lower carbon, lower resource use and better outcomes for the site.
We work with realistic budgets. If you are planning a smaller home, an addition or a right-sizing move and want it designed properly for the money you have, talk to us early — the most valuable decisions are made before anything is drawn.