New Build House Costs in Cambridge and Cambridgeshire

Building a new house in Cambridgeshire generally runs at £2,200 to £3,200 per square metre of finished floor area for the construction itself (our budgeting band, built from the published ranges explained below), before the plot, the professional fees and the statutory costs.

This guide sets out the published 2026 benchmarks, the VAT position that makes a new build behave differently from every other kind of building work, the ground and plot variables that move a budget most, and the local planning picture in Greater Cambridge. It is general budgeting information rather than a quotation.

New build costs at a glance

Two things make these numbers behave differently from an extension budget.

The first is VAT. A new dwelling is zero-rated, so there is no 20% to add. That is the single largest structural difference between a new build budget and every other budget on this site, and it is covered in full below.

The second is that the plot is not in the figure. Land is usually the largest line in a self-build and it varies far more than the building does.

Ranges are compiled from Homebuilding & Renovating’s build cost guide (16 February 2026, excluding VAT), which puts a main-contractor build at £2,000 to £2,800 per m² and a design-and-build route at £2,300 to £3,500 per m², and MyBuilder’s cost-to-build-a-house guide (21 August 2026, VAT position not stated), which puts the 2026 UK average at £1,600 to £2,800 per m². Our Cambridgeshire band of £2,200 to £3,200 per m² spans Homebuilding’s two contractor-led routes and sits in the upper half of MyBuilder’s national range, because labour and material costs here run above the UK average: the Federation of Master Builders puts London and the South East 30 to 50 per cent above the national per-square-metre figure for extension work.

Why the published figures disagree

MyBuilder’s lower band and Homebuilding’s upper band barely overlap, which is worth explaining rather than averaging away.

The low end of any national figure describes a simple rectangular house, standard specification, straightforward ground, built somewhere with lower labour rates. The high end describes a more complex form, better glazing and finishes, higher fabric performance, and a location with tighter labour supply. MyBuilder’s own worked table (£403,000 for a 155m² two-storey detached house) implies about £2,600 per m² — comfortably inside Homebuilding’s band — which suggests its headline low figure describes the simplest possible build rather than a typical one.

For Cambridgeshire we have used £2,200 to £3,200. That is Prestige’s own budgeting band, based on those published ranges and adjusted for local costs; it is not a figure any source publishes as it stands. If you want a single number to start a conversation with, £2,600 per m² is a reasonable middle.

What a price per square metre includes

A construction rate should cover the building itself:

• site set-up, access, welfare, scaffolding, skips and waste
• ground works, foundations and drainage below the building
• superstructure — frame or masonry, floors, roof structure and covering
• external envelope: brickwork or render, insulation, windows and external doors
• internal walls, staircase, plastering and joinery
• electrics, plumbing, heating and ventilation
• kitchen and sanitaryware allowances, decoration and floor finishes

It does not normally cover the plot, professional fees, statutory fees, connections to services, landscaping and driveways, or anything you supply direct. Those are set out below, and they are the reason a build that “came in at £2,600 a metre” can still have cost noticeably more.

The VAT difference: new houses are zero-rated

This is the part worth reading twice.

Work on an existing home — an extension, a loft, a refurbishment — is standard-rated at 20%. The construction of a new dwelling is zero-rated under HMRC VAT Notice 708, section 3, provided it is built from scratch and meets the notice’s conditions. A VAT-registered contractor building a qualifying new house charges no VAT on the construction work or on the building materials incorporated into it.

To qualify, the building has to be genuinely new: built from scratch, with any previous structure demolished to ground level (cellars and slabs may remain), designed as a dwelling, and built under a single project with planning consent.

Qualifying new-home construction can be zero-rated for VAT. Treatment depends on the building, the work and how services are supplied, so confirm the applicable treatment before finalising your budget. Some things usually stay standard-rated even on a new build:

• professional services appointed separately — an architect, structural engineer, surveyor or project manager you appoint directly is standard-rated. Under a single design-and-build contract, where those services are only cost components of the contractor’s supply, the whole supply can qualify for the zero rate (HMRC VAT Notice 708, section 3.4.1)
• plant and equipment hired separately rather than supplied with the work
• fitted carpets, most free-standing white goods and some fitted appliances
• outbuildings and pools, and garages that are not built with the home. A garage built at the same time as the dwelling and intended to be occupied with it can be zero-rated whether or not it is attached (VAT Notice 708, sections 3.2.1 and 4.7.3)

If you are managing the build yourself rather than employing a main contractor, the DIY Housebuilder Scheme (HMRC form VAT431NB) refunds the VAT you have paid on eligible building materials bought in your own name, in a single claim made within six months of completion. It does not cover VAT on services: a builder’s labour on a new dwelling should be zero-rated at the point of supply, so if you are charged VAT on it the supplier should correct the invoice rather than you claiming it back. Professional fees, hired plant, and furniture and carpets sit outside the scheme, and conversions follow separate rules (reduced-rate services and a different claim form, VAT431C). Keep every invoice — the claim is evidence-based and there is no second chance at it.

On a £300,000 build, zero-rating is roughly £60,000 that never enters the budget. It is the reason a new house per square metre sits closer to an extension per square metre than most people expect.

The plot and the ground

Two variables sit outside the building and can move a new build budget more than any specification choice.

The plot. Land with outline consent, a serviced access and no unusual constraints prices very differently from a garden plot behind an existing house with a shared drive. Nothing in this guide includes the plot.

The ground. Much of this area sits on clay, and clay shrinks and swells with moisture. Where there are trees nearby — present, recently removed, or planned — foundation depths increase, sometimes substantially, and piled or reinforced solutions become the sensible answer. Parts of Fenland and the river valleys bring their own drainage and flood considerations.

A site investigation before you fix a budget is not an optional refinement. Foundations are the one element you cannot value-engineer later, and an unexpected foundation design is the most common reason a new build budget moves in the first month.

Planning, fees and the Greater Cambridge picture

The application fee for a full application to build a single new house is £610 per dwelling under the Planning Portal fee schedule effective 1 April 2026 (confirmed in the government’s indexation notice). Fees are indexed annually each April.

Water efficiency is a live local issue. Greater Cambridge is one of the driest parts of the UK, and the Environment Agency has classified the Cambridge Water supply area as under serious water stress since 2021. The Proposed Submission Greater Cambridge Local Plan (consultation closed 25 September 2026) proposes that new homes on schemes of fewer than 100 dwellings achieve 90 litres per person per day, and 80 on larger schemes, against the national optional standard of 110. These are proposed targets, not adopted policy. Confirm the applicable planning conditions and water-efficiency requirements for your site with your planning adviser before choosing fittings or water-reuse systems.

The Community Infrastructure Levy is coming but is not yet in force. Cambridge City and South Cambridgeshire consulted on a draft CIL charging schedule between 16 February and 29 March 2026 and submitted the draft charging schedules for examination on 13 July 2026. CIL is charged per square metre of new floorspace, so once adopted it will be a real line in a new build budget in a way it is not today. If you are planning a build that will be submitted in the next year or two, ask your planning consultant where the schedule has got to. Section 106 obligations can also apply on some sites.

Where a charging schedule applies, qualifying self-build homes may receive a CIL exemption. It must be applied for and granted before work starts, with a commencement notice submitted in time and completion evidence supplied afterwards. Do not assume an exemption from the label “self-build”: ask your planning adviser to confirm the eligibility and procedure for your project.

Building control is charged separately by the local authority or a registered building control approver, and on a new dwelling the inspection regime is more involved than on an extension. Our planning permission guide explains how applications are handled locally.

Warranty, and why lenders care

A new house normally needs a 10-year structural warranty. It is not a legal requirement in itself, but most mortgage lenders will not lend on a new home without one (UK Finance’s warranty guidance sets ten years as the minimum lenders expect), and neither will a buyer’s lender if you sell within the ten years. Arrange it before work starts: a warranty provider inspects during construction, which is the simplest and cheapest route. Cover for a building that is already finished does exist (some providers offer retrospective or completed-build policies), but it depends on their assessment, the evidence of how the build was done, further inspections and whether a lender will accept it, and it usually costs more.

If you are self-managing, you will also want site insurance covering the works, materials and public liability, which is a different product from the warranty.

Costs to allow for outside the builder’s price

• The plot
• Professional fees — commonly 5% to 15% of the build cost across architect, engineer and any project management
• Site investigation and survey — topographical and geotechnical
• Planning application — £610 per dwelling, plus consultant fees if you use one
• Building control — local authority or registered building control approver
• Structural warranty and site insurance
• Utility connections — water, electricity, gas, telecoms and foul drainage; connections to a plot with no existing services are frequently underestimated
• Demolition and site clearance where something is already there
• Landscaping, driveway and boundaries — usually excluded from the construction rate
• Contingency — 10% to 15%, and toward the top of that on a plot you have not built on before

How to get a useful new build quotation

The specification is doing most of the work in the price, so the useful question is not “how much” but “for what”.

Ask for the fabric performance you are being priced for, the heating and ventilation strategy, the window specification, and where the kitchen, sanitaryware and floor-finish allowances have been set. Ask what happens if the ground investigation changes the foundation design, because that is the variation most likely to arrive.

Then the standard checks: written scope, named exclusions, the VAT treatment in writing, the programme, stage payments, how variations are priced, and the warranty provider. Our guide on what a builder’s quotation should include covers the full list.

A new build in progress

We are currently on site at a ground-up new build at Harston, south of Cambridge — a supermarket at ground floor with six flats above, where Prestige carries the brickwork, rendering and carpentry packages along with the windows and doors. It is a timber frame on a concrete slab with a brick outer leaf, roofed in early August 2026 and now at internal first fix. It is a larger building than the single house this guide describes, but the shell goes up the same way, and we are happy to talk through how it has been run at the point you are ready to plan yours.

Our new build service page sets out how we scope, price and run this type of work.

New build cost questions

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

Around £2,200 to £3,200 per square metre for the construction, so roughly £264,000 to £384,000 for a 120m² three-bedroom house, before the plot, professional fees and statutory costs. A new dwelling is zero-rated for VAT, so there is no 20% to add.

Is there VAT on building a new house?

No, not on the construction. A qualifying new dwelling is zero-rated, so a VAT-registered contractor charges no VAT on the building work or the materials built into it. Separately appointed professional services, separately hired plant and some fitted goods are generally standard-rated; a garage built with the home and some design-and-build arrangements can qualify differently. Self-managed builds can reclaim VAT on eligible building materials bought in their own name through the DIY Housebuilder Scheme. Professional fees, separately hired plant and other non-qualifying items are excluded.

Is it cheaper to build than to buy?

Sometimes, and the honest answer is that it depends almost entirely on what you pay for the plot. The construction cost is the more predictable half of the equation.

How long does it take to build a house?

It depends on size, construction method and ground conditions, and design and approvals add a period before anyone is on site. We give you a programme with your quotation rather than a general figure.

What is the biggest risk to a new build budget?

Ground conditions. Foundations are designed once the site investigation is in, and on shrinkable clay near trees the design can change substantially. That is why we recommend investigating before fixing a budget rather than after.

Will I need a warranty?

In practice, yes. Most lenders require a 10-year structural warranty on a new home, both for your own mortgage and for a buyer’s within the first ten years. It should normally be arranged before work starts, because the provider inspects during construction. Cover arranged later depends on the provider accepting the finished building and on your lender accepting that cover, and usually costs more.

How this guide was prepared

Build cost ranges are taken from Homebuilding & Renovating (16 February 2026, excluding VAT) and MyBuilder (21 August 2026, VAT position not stated), and are quoted as published rather than adjusted; where they disagree, the disagreement is explained rather than averaged, and our Cambridgeshire band is a bracket across them as explained above. VAT treatment is from HMRC VAT Notice 708 (last updated 26 August 2026). Planning application fees are from the Planning Portal fee schedule effective 1 April 2026. The water efficiency standard and the CIL position are from Greater Cambridge Shared Planning’s Proposed Submission Local Plan and CIL consultation pages, and both are draft at the time of writing. The warranty position is from UK Finance’s lender warranty guidance. Worked figures are transparent multiplication of a published benchmark and are a starting point for a conversation, not a quotation.

Get a clear next step for your new build

Tell us what you want to achieve, and send whatever you already have. No drawings needed to start an enquiry: photos and drawings help, but plenty of projects begin with a description and a site visit. We aim to respond to every enquiry within one working day with the most useful next step. Request a Quote.

More on planning, costs and contracts in our building guides. Some homeowners spread the cost — our building project finance page explains the options and who provides them.

Harston, South Cambridgeshire. In progress, 2026.

A ground-up new build with a supermarket on the ground floor and six flats above, built in cavity walls with a red multi facing brick outer leaf.

Prestige is carrying out the brickwork, rendering and carpentry packages plus the windows and doors, not the whole build.

See the Harston brickwork project

Last reviewed: 5 October 2026. This guide applies to England. Costs, planning rules, fees, levies and building regulations change; check current official guidance and obtain appropriate professional advice for your property and project.