The 10-step framework

1. STEP 1

   Understand the volume model

   Volume builders (also called project home builders) build hundreds of homes per year using repeatable designs, standardised specifications and preferred subcontractor teams. This produces genuine cost advantages that a custom builder cannot match at the same size. The trade-off is limited customisation and a contract structure heavily favouring standard inclusions.

2. STEP 2

   Read the base price carefully

   The advertised price is almost always the "base slab" price for the standard design on a flat, straightforward block. It excludes: site works if the block is sloping or has reactive clay, upgrades beyond the standard specification, developer levies, planning application fees and connection fees. Ask for a full "site cost estimate" specific to your block, not the base price.

3. STEP 3

   Get the standard inclusions list in writing

   Every volume builder publishes a standard inclusions list. Read every line. Common gaps: dishwashers, air conditioning capacity, floor coverings in some rooms, landscaping, driveways, letterboxes, clotheslines. Confirm which are included versus provisional versus excluded.

4. STEP 4

   Price every upgrade before signing

   The volume builder profit margin is thinner on the base contract and thicker on upgrades. A stone benchtop, extra powerpoints, ducted air conditioning, higher ceilings and premium tiles can add substantial cost. Get an all-upgrades total before contract, not per-item during construction.

5. STEP 5

   Verify the fixed-price nature of the contract

   Volume builder contracts are typically fixed-price, but with named exclusions. Site costs, provisional sums, rock removal allowances and PC (Prime Cost) items can all move. Ask specifically which categories are fixed and which are variable, and what the variable-item caps are.

6. STEP 6

   Confirm the standard build timeline

   Volume builders typically quote 8 to 12 months for a standard single-storey home in Adelaide, 10 to 14 months for double-storey. Weather, trade availability and inspection windows all add uncertainty. Ask what happens if the build exceeds the contracted duration; some contracts have liquidated damages, others do not.

7. STEP 7

   Investigate the site supervisor system

   One site supervisor typically manages 8 to 15 homes simultaneously. This is normal for the model but affects communication quality. Ask specifically: who is my supervisor, how many homes are they running, what is their preferred communication channel, and what is their response time commitment?

8. STEP 8

   Check the standard warranty and defect period

   Under SA law, all builders provide statutory warranties on structural elements. Volume builders typically add a defect-liability period of 90 to 180 days after handover during which minor defects are remediated. Get the exact defect period and the process for lodging defects.

9. STEP 9

   Verify Home Indemnity Insurance is current

   Every SA builder must hold Home Indemnity Insurance under the Building Work Contractors Act 1995. Ask for the certificate of currency specific to your project before signing. This protects you if the builder becomes insolvent, dies or disappears.

10. STEP 10

    Talk to at least three recent clients

    Ask for contact details for three homeowners who took handover in the last 12 months. Call them. Ask specifically about: how easy was communication during the build, how were variations handled, how were defects addressed at handover, would they build with them again. A volume builder unwilling to provide references is a red flag.

FAQs