The Future Homes Standard comes into force on 24 March 2027, with a twelve-month transition before its headline requirements — on-site solar, heat pumps in place of gas boilers, and a much harder carbon target — fully apply from March 2028. If you're planning a one-off new build or a self-build home in England, the date that actually matters to you is whichever of two triggers comes first: submitting your building notice or full plans before 24 March 2027, or having foundations laid on site before the March 2028 transitional cut-off. Everything else in this piece is detail in service of that one fact.
For a long time, the Future Homes Standard has been a fact everyone in this industry nodded along to without quite planning around. It has been trailed, consulted on, and pushed back more than once since it was first proposed, which made it easy to treat as a horizon rather than a date. That changed this year. The commencement regulations are now made, the transition period is defined, and a standard that spent years as a rumour of future regulation has become, quite suddenly, a piece of near-term scheduling. For anyone at the early stages of a new home — choosing a plot, briefing a designer, waiting on a planning decision — that shift from "eventually" to "March 2027" is the whole story.
What will the Future Homes Standard actually require?
Stripped of the policy language, the standard asks for four things from a new home: a lot less carbon, no fossil fuel heating, a meaningful amount of its own electricity, and proof that it actually performs as designed.
The carbon target is the headline figure: new homes must deliver at least a 75% reduction in lifetime greenhouse gas emissions compared with current Building Regulations. In practice, that rules out gas boilers and combined heat and power systems in new dwellings — heat pumps or a connection to a heat network take their place. New homes will also need to generate a meaningful share of their own electricity on site, almost always through solar, sized to roughly 40% of the ground floor area, with narrow exemptions where a site genuinely can't support it — heavy overhead shade, for instance, or a realistic yield too low to be worth the roof space.
Underneath those headline figures sit three quieter but equally consequential changes. First, the assessment method itself is changing: the Home Energy Model will replace SAP, closing a loophole that let a poorly insulated home "buy back" its rating with extra solar panels rather than genuinely better fabric. Second, Part F's ventilation rules are being tightened, with stricter testing and commissioning of fixed ventilation systems — not just specifying the right kit, but proving on completion that it was actually installed and balanced correctly. Third, Part O's overheating rules now assess higher-risk rooms individually rather than as an average across the house, and explicitly expect passive measures — cross-ventilation, shading, ceiling fans — to be exhausted before anyone reaches for air conditioning. None of this is abstract: it's the difference between a home that looks efficient on paper and one that's actually comfortable to live in.
Does this apply to self-build and one-off homes, or just the volume housebuilders?
It applies to new dwellings generally, not just to volume housebuilders. Nothing in the standard carves out an exception for a single self-build home or a one-off architect-designed house — if it's a new dwelling in England, the same dates and the same requirements govern it, regardless of who's building it or how many homes are on the site. The timing that matters is about when you submit your plans and when you start on site, not about who you are as a builder.
The one genuine boundary worth knowing is the line between a new build and a conversion. Barn conversions and other change-of-use projects sit outside the Future Homes Standard altogether — they're governed by the separate rules that apply to existing buildings. If your project sits close to that line — a near-total rebuild behind a retained facade, say — it's worth confirming with your building control body early which regime you actually fall under, because the answer changes what you're designing to.
Why build to it now, five months before you have to?
There's a practical reason and a deeper one, and they point the same direction.
The practical reason is timing. Good design takes months; planning permission, in the ordinary run of things, takes months more. A project that starts its design process today may well not be ready to submit a building notice until comfortably after 24 March 2027 — which means it's going to be judged against the new standard whether or not anyone planned for that. Designing to the old rules now, in the hope of squeezing under the wire, is a wager against your own timeline. Designing to the new standard from the first sketch removes the bet entirely.
The deeper reason is that this shouldn't feel like a stretch. Studio Harrison's own approach to Sustainable Design has always started from fabric first — building the envelope well enough that the services barely have to work — in line with the principles that underpin the AECB and the Passivhaus Trust. Much of what the Future Homes Standard now requires by law, that approach has been asking for as a matter of course. That isn't a claim that the standard is unambitious; it's a reminder that Building Regulations have always been a floor, not a ceiling, and that the best homes we've been part of were already standing some way above it. Catching the regulatory floor up to where good design already stood doesn't make that design any less worth doing properly. If anything, it's the point.
A standard built to a deadline; a home built to outlast one
It's worth separating two different things that both get called "future-proofing." One is a checklist — the panels, the pump, the paperwork — built to satisfy an inspector on a particular date. The other is a way of thinking about a home that has nothing to do with any single regulation: fabric that will still be doing its job in forty years, a heating system sized honestly to the building rather than oversized out of habit, materials chosen for how they age rather than how they photograph on day one. The Future Homes Standard will get the first kind of future-proofing written into law in March 2027. The second kind has always been a matter of judgement, not legislation — which is really the point of designing a home generationally rather than to a deadline. A date on a government timetable is a useful prompt. It isn't the reason to build well.
Frequently Asked Questions
When exactly does the Future Homes Standard start?
The regulations come into force on 24 March 2027. There's then a twelve-month transition before the on-site solar and heat pump requirements fully apply from March 2028, so the practical deadline depends on when you submit your plans or start on site.
Will I still be able to install a gas boiler in a new home after 2027?
Not under the new rules. New dwellings will need heat pumps or a connection to a heat network instead, subject to the transitional timing above for projects already in progress.
Does the Future Homes Standard apply to my extension?
No. It governs new dwellings, not extensions or conversions to an existing home — those are covered by the separate Building Regulations that apply to existing buildings, which have their own (different) requirements.
Will I still need a SAP energy assessment?
SAP is being phased out in favour of a new assessment method, the Home Energy Model, as part of this standard. If you're used to the SAP process from previous projects, expect the assessment itself to look and work differently.
Does a self-build home get any exemption from the standard?
Based on everything currently published, no blanket exemption exists for self-build or one-off homes — the standard is framed around new dwellings generally. Given how often the detail here has shifted, it's worth confirming the current position with your building control body before finalising your own timeline.