Who should order materials for a home building project?

Decide who specifies, buys, checks, stores and pays for each material before work starts. “The builder will handle it” can conceal gaps, while a homeowner buying everything directly can disrupt the programme and blur responsibility for defects. The best arrangement depends on the contract and project, but the division should be written down.

Separate selection from procurement

You may choose the tiles, bathroom fittings or kitchen, while the builder measures the quantity and orders them. Alternatively, you may buy a named product and deliver it to site. Those are different responsibilities. Record who approves the exact model, dimensions, colour, lead time, compatible fittings and any substitution. A designer or engineer may need to approve technical products; Build Advocate does not replace that approval.

For every item, answer these questions

  1. Specification: who confirms the product and performance required?

  2. Quantity: who measures it, allows waste and checks the order?

  3. Purchase: who contracts with the supplier, pays the deposit and owns the goods?

  4. Delivery: who books the date, unloading, scaffold access and safe storage?

  5. Checking: who inspects damage, short supply and wrong items on arrival?

  6. Defects: who handles the supplier claim and the cost of removing or refitting?

A named materials schedule should include required-on-site dates. An attractive online price means little if a roof light arrives after the roof is closed or the staircase dimensions are not signed off.

Homeowner-supplied items need boundaries

If you supply a bathroom suite, identify whether the builder’s price includes unloading, storage, fitting, waste connections, sealing, commissioning and making good. Agree what happens if your chosen item is late, unsuitable or different from the drawings. Do not assume a product warranty covers installation labour.

Payments and evidence

Where the builder needs advance money for steel, scaffold or windows, connect the payment to an identified order and agreed contract mechanism. Keep invoices, specifications and delivery records. Off-site goods raise separate questions about title, identification and risk; seek appropriate contract advice for large sums. Our payment schedule and early payment guides explain how to test the request.

Set the buying responsibilities alongside the building specification and schedule of works. Build Advocate can review the scope and delivery gaps before you appoint a builder. See the comprehensive £999 package.

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Builder increased the quote before work starts: what should you do?

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Planning permission versus building regulations: what does a homeowner need?