New builds and warranties

If the plot is beside a site compound, with dust and an unfinished pavement, is that a defect in the house?

Not by itself. Dust and an unfinished pavement describe the estate around the plot, and they are not automatically a defect in the house fabric. Road adoption is a question for the solicitor. NHBC Buildmark is a warranty and insurance for the home, not a statement that the road has been adopted.

Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.

What is the fuller explanation?

New estates often still have a compound, bare verges and sections of pavement that the builder has not finished. A survey can record the mess and whether it is damaging the plot you are buying: blocked gullies, stored materials against the wall, broken glass, or staining that is already in the fabric. The mere presence of the compound is context. It does not, on its own, fail the brickwork or the roof. Say what is actually wrong with the house, separately from what is unfinished outside it.

NHBC describes Buildmark as a 10-year warranty and insurance. In the first two years the builder is responsible and NHBC guarantees that responsibility. In the following eight years the insurance covers damage from defects in specific parts, not every snag. That description is about the home, not a promise to pause until the highway authority adopts the road. Do not invent a list of exclusions beyond that. Ask the solicitor who will adopt the road and when the estate roads are due to be finished, and keep that enquiry out of the snag list for the kitchen.

What should you ask your surveyor?

Which marks are on the house, and which are only the unfinished estate?
Did site activity damage anything on this plot?
Are you treating road adoption as an NHBC question? You should not be.

What are the typical next steps?

Split house snags from unfinished estate works in your notes.
Ask the solicitor about road adoption.
Do not tell NHBC the warranty is paused because the pavement is incomplete.

Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.

Also asked about this

Does dust on a sill become a defect if it is inside?

It can, if it is damaging finishes you have bought. Say so plainly. Dust in the air outside is not the same note.

If the compound leaves after completion, does the survey change?

The PDF stays the day of inspection. A later tidy-up is not a new survey unless someone inspects again.