Common questions

Questions people ask before they call a builder.

A Nevitt Construction is a family run building contractor based in Hayle, working across West Cornwall since 1975. Straight answers below on what building work costs, how planning works and how long a job takes.

How much does an extension cost in Cornwall?

It depends on size, whether it is single or double storey, the ground it sits on, how much structural work the opening-up needs, and the finish you choose. Our extension work starts around £30,000 and rises from there. We give every extension a written quote off the drawings rather than a misleading per-metre figure.

How much does it cost to build a house in Cornwall?

There is no honest way to price a new home from a website. The size, the site, the ground and the level of finish all move the figure. Our completed work runs from £30,000 extensions to £3,000,000 new builds, so a new home usually sits well up that range. We quote in writing off your drawings.

What is design and build?

Design and build means one firm handles both the drawings and the building. Instead of appointing an architect, then finding a builder, you deal with one team from the first line on paper to handover. The people who design it are answerable for building it, so what is drawn can actually be built to budget.

Do I need an architect for an extension, or can a design and build firm handle it?

A design and build firm can handle it. We can draw up the extension, apply for planning and building regulations, and build it, all in one. If you already have an architect or your own drawings, that is welcome too; we will build to them. Either way you have one point of contact.

Do I need planning permission for an extension in Cornwall?

Some extensions fall under permitted development and need no planning application. Many do need permission, and listed buildings and conservation areas, which are common across West Cornwall, have tighter rules. We check where your project stands early and handle the planning and building-regulations applications for you, so you know where you stand before committing to anything.

How long does an extension take to build?

A straightforward single-storey extension is usually a matter of a few months on site; a larger double-storey one or a project needing significant structural work takes longer. Planning and drawings add time before work starts. We give you a realistic programme with your quote rather than an optimistic one that slips.

What areas of Cornwall do you cover?

We are based in Hayle and build across West Cornwall: St Ives, Penzance, Truro, Falmouth, Camborne, Redruth, Helston, Newquay and the towns and villages between them. Hayle and the surrounding eight miles or so is our core patch, and we regularly work further afield across the west of the county.

Are you insured and accredited?

Yes. A Nevitt Construction is a member of the Federation of Master Builders and registered with the CITB. We are a family run firm that has traded in West Cornwall since 1975, and we carry the cover a project of your size needs. Accreditation membership numbers are shown once verified.

Do you take on smaller jobs, or only large builds?

Both. Our range runs from around £30,000 extensions to £3,000,000 new builds, and a growing family’s extension matters to us as much as a major project. If you are not sure whether your job is one for us, get in touch and we will tell you honestly.

Can you take on a project another builder has left unfinished?

Yes, and we are used to it. Picking up a job that has stalled or been left in a poor state needs a careful look at what has been done before quoting the rest. We will give you a straight assessment of where things stand and what it takes to put it right.

How do I get a quote?

Call Andy on 07720 292754 or send an enquiry through the contact page with a rough idea of the project and the town. We will arrange to see the site, talk it through, and give you a clear written quote. There is no obligation and no charge for the quote.

Do you do the groundworks yourselves?

Yes. Foundations, drainage and site preparation are done by our own team as part of a build, and we also take on groundworks as a standalone job for other builders and self-builders. On the varied ground of West Cornwall, getting the base right is the part that everything above depends on.

Still not sure?

Ask Andy directly.