Sizewell C Accommodation Grants for Owners: 2026 Guide

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Overview

Sizewell C expects around 7,900 workers on site at peak, and the project's own accommodation team says roughly two thirds of them will not be living at home. The campus under construction at the site will hold 2,400 single rooms. Everyone else needs a bed somewhere within an hour of Leiston, and East Suffolk Council is paying owners to create them.

The council's Sizewell C housing grants will fund up to £7,000 per bedspace for conversions and up to £3,000 per bedroom for bringing an unused room back into use, with a further £2,500 available for energy improvements. The conditions run for five or ten years and the grant only pays out after the work is done. This guide sets out what is on offer, who qualifies, what you sign up to, and the question the council pages do not answer: how the room earns once it exists.

The three grants in plain terms

East Suffolk Council's housing grants page describes three strands of funding, all aimed at homes within a 30-minute drive of the Sizewell C site and inside the East Suffolk Council area.

Grant	Maximum	Who can apply	What it funds	Availability condition

How a grant-funded room earns

The council's conditions say where the room must be advertised. They do not say how it should be let, and that choice decides the income.

A fixed tenancy is the simplest route for a self-contained annexe or a whole converted property. It gives predictable rent and suits a worker on a multi-year contract, but it leaves nothing for the weeks between contracts.

A lodger arrangement suits an owner-occupier who has used the Minor Works Grant to bring a spare bedroom back into use. HMRC's Rent a Room scheme allows up to £7,500 a year of rent from a furnished room in your own home free of income tax, which covers a meaningful share of a weekday-only lodger's rent. Check the current threshold with HMRC before relying on it.

Request-based short stays are the third route, and the one that fits how large projects staff themselves. Crews come for a programme of work, not a calendar year: a six-week pour, a three-month fit-out, a Monday-to-Friday rotation with the weekend at home. On a reverse marketplace such as Offer2Stay the crew or their site manager posts what they need, including dates, number of beds, parking for vans and any requirement for a kitchen, and verified hosts send their best offer against a floor price they have already set. The owner keeps control of who stays, the dates stay flexible, and the room can go back to a tenancy or to leisure guests when the project's rhythm changes. Our guide to Monday to Friday contractor accommodation covers what crews ask for and how hosts price a weekday-only stay.

For a sense of what the open market is asking, one listing on OpenRent in October 2026 advertised a two-bedroom terraced house in Leiston as Sizewell contractor accommodation at £2,795 a month. That is one asking price, not a benchmark.

Whichever route you choose, the grant obligation is about availability to Sizewell C workers for the five or ten year period. The council page does not say the room must be let exclusively to project workers, but the deed of agreement is what binds you, so read it and ask the grants team how mixed use is treated before signing. The broader picture of where the workforce will stay and what it means for the Suffolk coast is in our Sizewell C accommodation guide.

Frequently asked questions

Can holiday let owners claim a Sizewell C accommodation grant?+

Only if they are creating new bedspaces that meet the criteria: an owner-occupier bringing an unused bedroom into use, or a property owner converting an annexe, garage or non-residential building. An existing holiday cottage can be advertised on the Sizewell C Accommodation Management System free of charge without a grant, and that is the route most cottage owners will take.

Do I have to let the room only to Sizewell C workers?+

The council's published conditions require the accommodation to be available for use for five or ten years and to be advertised on the Accommodation Management System once complete. They do not state that it must be let exclusively to project workers. The deed of agreement you sign is what governs this, so ask the grants team to confirm how mixed or short-stay use is treated before you commit.

Is the grant repayable?+

Yes, in full, if the accommodation is not made available for use within the first five years for a Minor Works Grant or ten years for a Renovation Grant. The condition is registered as a local land charge, so it stays with the property if you sell.

Will I need an HMO licence?+

A licence is mandatory if five or more people from two or more households live in the property. Smaller shared houses may still need planning permission under local rules, and Leiston Town Council has raised concerns about small HMOs in the town, so check with East Suffolk Council's housing team before fixing a layout.

Can I put a static caravan, log cabin or container in the garden and claim?+

No. The Renovation Grant specifically excludes modular structures, naming shipping containers, log cabins and caravans. The grant is for converting existing buildings or creating rooms within a home.

How long will the demand last?+

Sizewell C says construction will last up to 12 years, with the workforce peaking at around 7,900. Demand will shift as the campus and caravan park open, so a room that can take short stays will matter most for the trades arriving later in the programme.

What safety evidence does the portal ask for?+

Evidence of compliance with gas, electrical and fire safety measures, and accommodation of a good standard. These are the same documents a letting agent or a short-stay platform will expect to see.

Sizewell C Accommodation Grants: What East Suffolk Owners Can Claim and How the Rooms Earn

Overview

The three grants in plain terms

Tell hosts what you are looking for

Who qualifies and who does not

The conditions that outlast the cheque

How much demand there really is

How a grant-funded room earns

Applying, step by step

Frequently asked questions

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