Someone rings up every few months about a rear lot. Usually they've found one in Woonona or Figtree or out past Albion Park, it's noticeably cheaper per square metre than anything on the street, and they want to know whether there's a catch.
There's no catch exactly. It's just that a battle-axe block is two pieces of land pretending to be one, and the skinny bit costs money and gives you nothing to live in.
That's the whole thing, really. Everything below is a version of it.
The handle is a driveway you have to build first
The access handle is the strip that runs from the street back to the useable part of the block. On paper it's part of your land and you paid for it. In practice you can't build on it, you can't really garden on it, and before you get a single truck to the house site you have to make it capable of carrying one.
That means a driveway the full length of the handle, and depending on the fall of the land, retaining or edge treatment along one or both sides so the neighbours' ground doesn't end up in your drive. Long driveways are the item people leave out of the land budget entirely, and on a deep lot it isn't a rounding error.
Width is the number that matters most. There's a minimum, it's set by your council and by whether the handle serves one dwelling or more, and it decides everything downstream: whether a concrete truck can get in, whether a removalist can turn around, whether two cars can pass. I'm not going to put a figure on it here because it varies by council and by the terms of the original subdivision, and getting that wrong is expensive. Your council or a certifier will tell you for your specific lot, and it's the first phone call I'd make.
Grade matters nearly as much. A handle that climbs or falls steeply from the street can be legal and still be miserable, because the transition at the kerb scrapes the underside of a low car and a wet driveway on a slope is a genuine hazard. If the handle has real fall in it, read building on a sloping block alongside this, because the same physics apply to the drive as to the house.
Everything has to physically get down there
This is where rear lots quietly reprice a build.
A concrete truck won't fit down most handles, so the slab is placed by pump. That's a line item, and the pump has to reach — a boom pump parked at the street has a limit, and a longer handle can push you into a bigger pump or a relay. Same story with a crane on the day the frame or the trusses land. Same story with the trusses themselves, which arrive on a long rigid truck that can't corner into a driveway-width opening.
So the sequence changes. Materials get dropped at the street and moved down the handle in smaller loads, or they get craned over the top of the house in front, which needs the neighbour's cooperation and sometimes a road occupancy permit. Scaffold, waste bins, the portaloo, the site shed: all of it has to fit down there, or sit on the verge, or sit on the neighbour's driveway with a written agreement.
None of it is exotic. Builders around here do rear lots constantly. It's just that every one of those adjustments has a cost, and if a quote for a battle-axe block looks the same as a quote for a street-front block, the quote is wrong. That's exactly the kind of thing that should be priced properly rather than left as an allowance, and there's more on how allowances behave in site costs on a new build.
Services run the full length, twice
Power, water, sewer, stormwater, gas, comms. Each one starts at the street and has to travel the whole handle to reach the house. On a street-front lot those runs are short enough that nobody thinks about them. On a deep rear lot they're a trench the length of a cricket pitch, sometimes longer, with a road crossing at one end.
Two things follow from that.
Sewer is about depth and fall, not distance. Waste has to run downhill to the main, and if the main is shallow or the house site is low relative to the street, you're either lifting the floor level or installing a pump station. Neither is a disaster and both need to be known before the floor level is set.
Stormwater is about where the water is allowed to go. Your roof and driveway have to discharge somewhere legal, and for a rear lot that usually means piping it the full length of the handle back to the kerb, or into an inter-allotment drainage easement if the subdivision provided one. Check the title for easements before you buy. It's a five-minute job and it changes the drawings.
Where the front door goes, and other things nobody plans
A rear house has no street frontage, which does odd things to the design.
Visitors arrive at the back of another house and then walk or drive down a corridor. Where does your entry read from? A front door facing the handle is the obvious answer and it's often the wrong one, because it turns your main outlook into a view of a driveway. Better designs on rear lots usually turn the entry sideways, use a landscaped threshold at the end of the drive to signal arrival, and save the long views for the living areas.
Your letterbox and bins live at the street, next to someone else's. That's a small thing that becomes a daily thing.
Parking is worth more thought than it gets. Guests can't park on your street frontage because you haven't got one, so either the design includes somewhere to pull over near the house or everybody parks on the road and walks. On a long handle, a passing bay is worth its width in domestic harmony.
Emergency access is a real consideration too — a fire appliance needs to be able to reach or effectively serve a dwelling set well back from the road, and that can influence hydrant location, driveway construction and even the materials in the house. Ask early rather than at certification.
The upside nobody mentions
I've made that sound bleak, and it isn't. Rear lots produce some of the nicest houses we build, for three reasons.
You're not designing to a streetscape. No front setback dictating where the house sits, no matching the neighbours' façade rhythm, no garage dominating the frontage because there isn't one. The house can sit where the sun and the outlook want it to sit.
Privacy runs the other way from what people expect. You've got a house between you and the road, which means road noise drops off and nobody walks past your living room. The trade-off is that you're surrounded by back yards on most sides, so overlooking works in every direction at once. Window placement and screening matter more here than on a normal block, and it's much easier to solve in the design than with blinds afterwards.
And the land is cheaper. Genuinely cheaper, even after you've built the handle. The mistake is treating the discount as free money rather than as a budget for driveway, services and access.
Before you sign the contract for the land
Four things, and they're all quick.
Pull the title and read the easements and any restrictions on use, especially anything registered when the block was originally carved off. Ask council about the minimum handle width for a dwelling on that lot and whether they'll want the driveway constructed to a particular standard. Walk the handle with a tape and look at what's on both sides of it, because retaining and fencing along a long drive add up. And stand at the back of the block on a weekday afternoon to see what the neighbours' windows look at.
Whether the house then goes through complying development or a full DA is a separate question, and rear lots can go either way depending on the block and the design — CDC vs DA in NSW walks through that fork. The state planning policies sit with the NSW planning department, and your council's local environmental plan is where the lot-specific controls live.
Designing for a constrained site is most of what we do around here, and a lot of the thinking overlaps with skinny frontages — narrow block house designs covers that side of it.
We design and build new homes on rear lots across Wollongong, the Illawarra and the Southern Highlands, and we'll walk the handle with a tape before anything gets drawn, because that strip decides more about the house than the block behind it does. Have a look at how we run new homes, then send the address through the contact page or ring 0434 037 851 and we'll tell you honestly what the access is going to cost you.
Want a hand with this at your place? Get a free quote or call 0434 037 851.