From dual occupancy and duplexes to multi-dwelling projects and subdivisions, KaiserBuilt designs and builds developments that maximise your site's yield and value — handling feasibility, town planning, DA approvals, subdivision and construction, all at a fixed price.
A development means making more of your land — building a dual occupancy (two homes on one block), a duplex, a one-into-two, or a larger multi-dwelling project, often with a subdivision so each dwelling can be sold or rented separately. It is one of the smartest ways to invest in, or get more from, land you already own.
But it is also where the detail matters most: site yield, council planning rules, subdivision, and Adelaide's 2026 requirements around green space, tree planting and stormwater detention. KaiserBuilt runs the whole project — a proper feasibility first, then design, DA and planning approvals, subdivision and fixed-price construction — so your numbers are clear before you commit.
Whatever your block allows, we have a development solution to maximise its value.
Two dwellings on one block — live in one and rent the other, or hold both as investments.
Two attached homes designed to maximise yield and appeal on a single title.
Replace one older home with two brand-new, energy-efficient dwellings.
Townhouse and multi-unit developments designed to council requirements.
Proper feasibility and subdivision so each dwelling can be sold or rented separately.
We manage town planning, development approvals and the SA-specific requirements for you.
A calm, transparent process from first chat to the day we hand over.
We assess what your block allows and model the numbers before you spend a dollar building.
We design the dwellings to maximise yield and meet council planning rules.
A transparent, itemised price for design, approvals and construction.
We manage development approvals, engineering, stormwater and the subdivision process.
Skilled trades build every dwelling to the NCC with weekly progress updates.
We hand over finished homes with separate titles, ready to live in, rent or sell.
Your all-inclusive price is locked in before we start — no creeping variations or provisional sums.
Every home is designed to the NCC 7-star NatHERS standard — comfortable year-round and cheaper to run.
Photo updates and a single point of contact every week — you always know what is happening and what is next.
Genuine, name-brand inclusions as standard — not stripped-back base specs designed to be upsold.
A fully licensed, insured HIA-member builder with a structural warranty on every home.
A dedicated South Australian team that knows local councils, climate and site conditions.
Build costs vary by type and finish, and a big advantage in South Australia is that subdivision is far cheaper than the eastern states — often from around $20,000.
| Item | Indicative cost | Notes |
|---|---|---|
| Duplex / Dual-Occ Build | $2,000 – $3,800 / m² | Per dwelling, depending on size, finishes and site. |
| Subdivision (SA) | from ~$20,000 | Notably lower than NSW/QLD; plus SA Water & open-space levies. |
| Typical Dual-Occ Total | $550,000 – $1.2M | Two dwellings; excludes land. We confirm your exact figure in feasibility. |
Indicative 2025–26 ranges; excludes land and vary with site works, fees, GST and finishes. New 2026 SA rules add green-space, tree-planting and stormwater-detention requirements. We run a full feasibility so you know the real numbers first. *Return figures are indicative only, not financial advice.
Proudly serving Adelaide and the surrounding South Australian suburbs.
Book a free, no-obligation consultation and get a transparent fixed-price quote. We usually reply within a few hours.