Turnkey vs Partially Completed Kit Homes: What You're Actually Getting

The advertised price of a kit home package tells you almost nothing about what you will actually spend — the critical question is where on the completion spectrum that package sits, and what it will cost to bridge the gap to a liveable home.

The completion spectrum explained

Kit home suppliers market packages at vastly different levels of finish, and the terminology is not standardised across the industry. "Kit home", "house kit", "lock-up package", and "turnkey" can mean different things from one supplier to the next. Before you compare any two quotes, you need to map each offer to a specific point on the completion spectrum — and then price every item that sits beyond that point.

There are three broadly recognised levels, though many suppliers offer hybrid combinations between them.

Level 1: Structural kit supply only

What is included: Pre-cut and pre-engineered structural components — typically the frame, roof trusses, bracing, and in many packages, external cladding and windows delivered flat-packed to site. Some suppliers include engineered drawings and council documentation; many do not.

What is not included: Site preparation, foundations, erection labour, roofing, electrical, plumbing, insulation, internal wall linings, all wet area and kitchen fit-out, floor coverings, painting, and any external works.

Indicative supply cost: $30,000–$150,000 depending on floor area and specification. Steel framing kits and engineered timber systems sit at opposite ends of this range. Timber framing material runs indicatively around $8.40 per lineal metre, which sounds modest until you account for the volume required in a full dwelling and the labour to erect it.

Who this suits: Licensed owner-builders with genuine construction experience, or those engaging a registered builder to complete the project. An inexperienced owner-builder who underestimates the completion cost is the most common source of budget blowouts in this category.

Level 2: Enclosed or lock-up package

What is included: Everything in a structural kit, plus erection labour, roof covering, external cladding fixed, and external doors and windows installed. At lock-up stage the building is weathertight — rain cannot get in, but no one can yet live in it.

What is not included: All internal fit-out. This means rough-in and fit-off of electrical and plumbing, insulation, internal wall and ceiling linings (plasterboard runs indicatively around $24 per sheet), kitchen cabinetry, bathroom fixtures, floor coverings, painting, and external works including the driveway and landscaping. Foundation works — the concrete slab or pier system — may or may not be included; read the contract carefully.

Indicative package cost: $80,000–$220,000. Steel roofing material alone runs indicatively around $38 per m², giving you a sense of how quickly the included components add up.

Who this suits: Owner-builders who are confident managing a trades programme for the internal fit-out, or those who want to stage their spending and complete interior work over time — subject to council approval of any staged occupation arrangement.

Level 3: Turnkey (move-in ready)

What is included: A complete, finished home — all trades, all fit-out, kitchen and bathrooms installed, floor coverings laid, walls painted, and often a driveway and basic landscaping included. In most cases the builder holds the contract and coordinates every subcontractor.

What is not included: Land, and sometimes utility service connections (electricity, gas, NBN, water and sewer) depending on how far the site sits from existing infrastructure. Upgrades above the standard specification are also additional.

Indicative total cost: $200,000–$500,000 or above, depending on floor area, site conditions, and specification level. Engineered stone benchtops run indicatively around $680 per lineal metre; engineered timber flooring around $110 per m². These are the kinds of specification choices that move a turnkey price substantially.

Who this suits: Anyone without an owner-builder licence, those building on remote or regional sites where managing separate trades is logistically difficult, and buyers who want a single contract with clear responsibility.

Calculating your true total cost

For any package, the only meaningful comparison is total cost to move in — not the supplier's headline figure. Build a completion cost table using the following structure:

• Start with the quoted package price — confirm exactly what is and is not included in writing.
• List every excluded item — work through the contract line by line. Common omissions include: site survey, soil test, engineering and certification, DA or CDC application fees, BASIX compliance measures, slab or foundations, termite protection, insulation, internal linings, kitchen, bathrooms, floor coverings, painting, electrical mains connection, plumbing connection to sewer or septic, stormwater drainage, driveway, and fencing.
• Price each excluded item from at least two local trades or suppliers. Wall insulation runs indicatively around $12 per m² of wall area; ceramic floor tiles around $45 per m² for supply only — labour is separate. Flat-pack cabinetry supply runs around $420 per lineal metre, custom joinery considerably more.
• Add statutory and professional costs — council DA fees, certifier fees, engineering certificates, and if you are not owner-building, a registered builder's project management margin.
• Add a 15% contingency — site-specific surprises, material price movements, and scope changes are a near certainty on any project.

Package level	Typical inclusions	Major cost gaps to complete	Indicative supply price
Structural kit only	Frame, trusses, sometimes cladding and windows	Foundations, erection, roofing, all fit-out, services	$30,000–$150,000
Lock-up package	Kit + erection, roof, external doors and windows	All internal fit-out, often foundations and services	$80,000–$220,000
Turnkey	Complete finished home, often driveway and basic landscaping	Land, service connections, above-standard upgrades	$200,000–$500,000+

This exercise consistently reveals that a lower-priced kit package can carry a higher total cost to completion than a turnkey offer from a volume builder — particularly on sites with difficult access, poor soil conditions, or limited local trade availability. The kit price is real; the completion cost is what matters.

Regulatory considerations you cannot skip

Regardless of package level, every kit home in NSW, VIC, and QLD requires a development approval pathway — either a full DA through your local council or a complying development certificate (CDC) where eligible. BASIX compliance is mandatory in NSW for all new dwellings and must be addressed at design stage, not as an afterthought. If you are acting as owner-builder, you will need an owner-builder permit and are subject to statutory limits on the value of work you can undertake without a licence. HIA and Master Builders both publish guidance on owner-builder obligations by state.

Questions to ask every supplier before signing

• Does this price include engineering drawings stamped by a registered engineer?
• Are council application fees and certifier costs included?
• Is the slab or foundation system included, and does it account for your specific soil classification?
• What is the delivery radius, and what are freight costs beyond it?
• If erection is included, what is the assumed site access condition?
• What warranty applies to the structural components, and who is the warrantor if the supplier is not the builder?

Use the DesignBuildSource cost calculator to benchmark your completion cost estimates against current NSW and regional build rates, then search the professional directory to find registered builders and certifiers with verified kit home experience in your local government area.