Every small home that fits your block, priced the way it'll really cost.
Type your address. See what fits, what it costs installed, and who can build it.
Queensland addresses for now. Every number sourced. Nobody pays to rank.
How it works
Check the block
Type an address. The council's size limit, the zone, flood, bushfire, sewer and slope, and the open ground measured from the aerial. Free.
See what fits
Every listed home that fits that block, grouped by how it's built, priced installed.
Compare and cost it
Up to four side by side, with the install cost and what a flat rents for in that postcode.
Get quotes
Licensed builders who install in your area quote in writing, itemised.
No block yet? Homes for sale with room for a second home, every one already measured.
For sale, with room out the back
South East Queensland, now
3,926 houses for sale, each block measured for a second home: the lot, the council cap, the open ground and the homes that fit.
Northgate112 Gympie StreetOffers Over $1,799,0001,070 m² lot · council cap 80 m² · 67 homes fit
Strathpine105 Spitfire AvenueOffers From $1,300,0001,075 m² lot · council cap 55 m² · 53 homes fit
Burleigh Heads17 Tanjenong PlaceBest Offer Over $1,695,000 Closing 2nd Nov809 m² lot · council cap 80 m² · 67 homes fit
Mount Warren Park10 Breeze CourtOffers over $1,089,000 Considered1,063 m² lot · council cap 100 m² · 67 homes fit
Basin Pocket19 Bremer ParadeOffers Over $689,0001,012 m² lot · council cap 80 m² · 67 homes fit
Russell Island13-15 Pookanah Street$549,000 + separate block612 m² lot · council cap 85 m² · 70 homes fitThe numbers
Sources: ABS 2021 Census (10.85 million private dwellings, 70% separate houses); ALGA (537 councils); National Construction Code (Class 1a).
Backyards checked0 of 1,000,000
Every free block check counts, one per address, since 16 Oct 2026. Count yours.
Starting in Queensland. Built for Australia.
Queensland is live: the block check, every council's rules and the homes priced installed. The other states follow one at a time, and nothing here claims rules it hasn't checked.
What kind of home?
Queensland, now
Granny flats, modular homes, tiny homes on wheels and kits, each priced installed.
What your council allows
Queensland, now
The biggest second home each South East Queensland council allows, checked 15 Oct 2026.
On a typical 600 m² lot. Zones, overlays and bigger lots change it: every council's rules.
Framed and clad homes, by size
Queensland, now
Built the way a house wall is built: a frame, insulation, cladding outside and lining inside. A spread of sizes from different makers, established makers first, priced installed on an easy Brisbane block. Panel pods, containers and kits are compared in their own groups, never against these.
8 x 3.4M (Venice)Teeny Tiny Homes · 27.2 m² · Established makerfrom $154,000 installed
Getaway 41Hoek Modular Homes · 41 m² · Established makerPrice on request
Brumby 1 Bedroom Granny FlatGranny Flats 4U · 27 m²from $122,000 installedThe CourtneyPennyGranny · 40.8 m²from $178,000 installedSalignaCoBuilt Modular Homes · 60 m²from $265,000 installedCourtyard 80 (Signature, Australian made)Homes and Granny Flats (HGF) · 79.16 m²from $318,000 installedNot buying?
For makers, installers, agents and councils.
Who runs this site
Big Small Haus Pty Ltd, which also builds: it's one of the builders listed here, by the same rules as everyone else, and its director co-founded a modular home maker. No maker or builder pays to rank, and any of them can fix or claim their listing.
Read before you build
Owner builder or licensed builder?
Why owner builder is often cheaper on a modular install, and what you give up.
Read itWhat it costs
The home, the site costs people forget, and the paperwork.
Read itYour contract, explained
Deposits, cooling-off, variations and why each clause is there.
Read itHow long it takes
3 to 8 months from first contact to keys. Here's where the time goes.
Read itQuestions
Where does this cover?
The block check and install prices cover South East Queensland today: Brisbane, Moreton Bay, Logan, Ipswich, Redland, the Gold Coast, the Sunshine Coast, Noosa, Scenic Rim, Lockyer Valley, Somerset and Toowoomba. Makers from across Australia are listed, and more states are coming.
Bought a home online, on Marketplace or from overseas. Can it be installed?
Only if a certifier can approve it as a dwelling. Not every imported or marketplace home is built as a Class 1a house, and nobody can promise council approval. Gather the maker's name and documents first. What a certifier needs to see.
Does this site sell homes?
No. You buy the home from the maker, and a licensed builder installs it. This site compares the homes and the builders, and nobody pays to be listed or ranked.