17 Driftwood Shack.
COASTAL HOLIDAY HOME | Peppermint Grove Beach, WA.
17 Driftwood Shack is an architect-designed coastal home taking shape at Peppermint Grove Beach, on the Western Australian coast. It’s built on the mi shack® MIDS modular design system — but it’s no generic modular product, and it’s certainly not a transportable house off a truck.
That distinction matters. MIDS gives the design a clear framework of zones; from there, the home is shaped around the site, the brief, the budget and the way this family wants to live. For Driftwood, that means a calm beach house built to take a hammering from a tough coast — salt air, wind, sand, BAL-29, big ocean views, screened outdoor living for the local mosquito season, and a genuine wellness thread running through it.
Calm house. Tough coast. Slow days.
PROJECT SNAPSHOT.
Project: 17 Driftwood Shack.
Location: Peppermint Grove Beach, Western Australia.
Region: Shire of Capel / South West WA.
Design system: MIDS — Modular Integrated Design System by mi shack®.
Home type: Architect-designed coastal holiday home.
Use: Family holiday home.
Setting: Harsh marine site near dunes, ocean views, coastal reserve and wetland environments.
Indoors: 240 sqm.
Outdoors: 175 sqm.
Sleeps: 4.
Baths: 3.
Status: In design and documentation — preparing for building permit submission.
Bushfire context: BAL-29.
Ross River virus context: Known local mosquito and Ross River virus risk area.
Wellness features: Sauna, outdoor spa / hot tub, outdoor shower, deck areas and places to slow down after the beach.
Design idea: A calm, durable beach house shaped for salt air, wind, BAL-29, ocean views, screened outdoor living, wellness and relaxed South West coastal use.
Why it matters: A clear example of how MIDS adapts to a demanding coastal WA site without going generic.
SITE.
Driftwood sits near the dunes at Peppermint Grove Beach, looking out toward the ocean with a native coastal reserve on its doorstep. It’s a beautiful spot, and the home leans into that landscape hard — but make no mistake, this is not a soft coastal site.
The design has to answer to salt air, wind, sand, bushfire, privacy, maintenance and plain buildability, all while supporting real beach-house life: sandy feet, open doors, wet towels on the rail, meals outside, that afternoon sea breeze, summer heat, winter storms, and quiet evenings long after the sun’s gone down. The setting does half the work. The design has to do the rest — and it has to work hard.
THE BRIEF.
The brief is a laid-back family beach shack with a wellness edge. The early Map iT moodboards set the tone straight away: simple life, family time, making memories, slowing down. Relax, unwind, revive.
The house needs to feel easy, durable and calm — somewhere that welcomes family and guests without ever turning precious. The ocean outlook matters, but so does shelter, and the outdoor spaces have to be genuinely comfortable, not just good in photos. Add the sauna, outdoor spa, outdoor shower and decks, and the brief sharpens: this isn’t just a place to sleep near the beach. It’s a place to reset after it.
THE DESIGN RESPONSE.
Driftwood starts from the MIDS system, which organises the home into clear zones — living, sleeping, bathing, gathering, retreat and outdoor. From there the design is tuned to this exact site: ocean views, sun, wind, privacy, BAL-29, salt air, insect screening, wellness and the rhythm of a coastal holiday.
The aim was never to make the house loud. It was to make it feel settled. Simple forms, protected openings, durable materials, clear planning and outdoor rooms you’ll actually use — together they let the home sit quietly in a demanding environment.
WELLNESS AND DUSK COMFORT.
Wellness here isn’t an add-on bolted to the brief — it’s part of the lifestyle. The sauna, outdoor spa, outdoor shower and decks set up a slower rhythm around beach life: swim, rinse, warm up, sit outside, watch the light change. That’s the feeling we’re after.
But at Peppermint Grove Beach, outdoor comfort is also about dusk. This is a known mosquito and Ross River virus area, so evening comfort has to be designed in, not hoped for. Screened openings, protected thresholds, flyscreens and sheltered outdoor areas all earn their place. The goal is simple: keep the house open to the coast, while still giving everyone somewhere comfortable to sit after sunset. That’s the kind of beach-house detail people remember.
COASTAL DURABILITY.
A coastal home needs more than a good view — it has to cope with salt, sand, wind, corrosion, maintenance and weather, year in, year out. At Driftwood, durability is baked in from the start: material choices, fixings, openings, cladding, screening and external detailing all chosen to suit a marine setting.
The trick is doing all that without the house feeling heavy or overbuilt. It should read as relaxed, not fragile. That balance is the whole game on a site like this.
BUSHFIRE AND BEACH LIVING.
Driftwood is being designed to a BAL-29 bushfire rating, which shapes how the home is detailed — openings, external materials, gaps, screens, decks, cladding and the construction junctions all need careful thought. The challenge is meeting that brief without killing the beach-house feeling.
That’s where the design work earns its keep. The house still has to feel like a place for holidays, family, recovery and ocean air — it just wears a tougher, more robust skin to get there.
THE MIDS BENEFIT.
Driftwood shows how the MIDS system supports a genuinely demanding coastal project. MIDS isn’t a one-size-fits-all house type — it’s a way to organise the brief, the planning and the design process. It gives the project a clear starting point, then adapts to the site, the budget, the bushfire requirements, the views, the materials, the outdoor living and the construction pathway.
On a coastal project, that early structure pays off. The decisions made up front flow straight through to cost, durability, approvals and long-term maintenance. The benefit, as ever, is structure without sameness.
BUDGET GUIDE.
Driftwood is a customised coastal home on a demanding site, so think of its build cost as a band rather than a single number. As an indicative guide, a comparable South West coastal home — Peppermint Grove Beach, Busselton, Bunbury or nearby — would sit in the range of $1.5–2.0 million to build, depending on floor area, specification, site complexity and consultant requirements. That figure excludes land, consultant and approval fees.
Coastal builds carry their own cost drivers — bushfire rating, structural design, marine-grade detailing, corrosion exposure, wind classification, glazing, screening, decks, the spa and sauna selections, and external materials all move the number. A band gives you a realistic starting point before design, documentation, approvals and builder pricing firm it up. A Map iT is where we’d pin down where your project actually lands.
RELATED PROJECTS.
17 Driftwood Shack is part of mi shack’s broader work designing architect-designed homes for coastal, rural, metro and regional WA. You might also like:
01 White Shack — the first mi shack® and the origin of the whole design system.
09 Hudson Shack — an Esperance family home showing how the system adapts to regional WA.
04 McGunnigle Shack — a Fremantle family home showing how it adapts to a metro site.
14 Cannon Shack — a Dunsborough family home shaped around rural South West living.
16 The Dell Shack — a Yallingup holiday home shaped around slope, family stays and guest use.
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Live. Love. Shack.
