Nearly 65,000 people in England are now on local authority registers for self-build and custom housebuilding, according to the latest government data released in September 2025. That is a net increase of over 1,100 individuals in just one year, and it tells you something important: the idea of building your own home is no longer a niche dream for the wealthy few. It is becoming a serious option for a growing number of ordinary households.
I have been writing about UK property for long enough to notice when a quiet shift turns into a real trend. The questions I get from readers have changed. People are not just asking about buying or selling anymore. They want to know about land, planning permissions, and whether they can actually build something themselves for less than the price of a standard new-build. The data backs this up. A 2023 survey of 2,000 UK adults found that 31% are now considering a self-build project. That is down only slightly from 35% in 2020, despite rising material costs and economic uncertainty. The interest is not fading. It is settling into something more permanent.
But here is the catch. While demand is rising, the supply of suitable plots is shrinking. The same government data shows that planning permissions for serviced plots dropped by 18% compared to the previous year. That means more people are chasing fewer approved sites. If you are thinking about going down this route, you need to understand how the system actually works — not just the dream of designing your own kitchen. Here is what you actually need to know.
If you are weighing up whether to build or buy, you might also find it useful to read about what is driving the current shift in UK house prices, because the market you are buying into affects the economics of building too. And if you are serious about protecting your project from the start, a property lawyer can help you navigate the legal side of land acquisition and planning conditions before you commit any money.
What self-build and custom housebuilding actually means
The most important thing to understand is that you do not have to swing a hammer yourself. The legal definition, set out in the Self-build and Custom Housebuilding Act 2015, covers both self-build and custom housebuilding. Both mean that an individual, a group of individuals, or someone working on their behalf builds or completes a home that will be occupied by that individual. The key requirement is that the initial owner has primary input into the final design and layout. That is the legal test. You do not need to be a builder. You just need to be the person making the decisions about how the house looks and works.
What I notice when I talk to people about this is that most assume self-build means a muddy field, a caravan, and two years of stress. That is one version of it, but it is not the only one. Custom housebuilding — where a developer prepares the land and you choose the house design from a range of options — is far more accessible. It removes the hardest parts: finding a plot, getting planning permission, and managing the build. You still get a home designed to your specifications, but with much less risk. If I were starting out, that is the route I would look at first.
If you want to understand how this fits into the broader housing market, it helps to look at how the UK property ladder is changing and where self-build might offer an alternative path for people who feel priced out of traditional buying.
Why the timing matters more than you think
The biggest reason self-build is gaining traction is not just about having a nicer kitchen. It is about affordability — or rather, the lack of it in the mainstream market. The survey data shows that 15% of people considering self-build cite it as a more affordable way to create their ideal home. Another 12% say it is about getting a home in the right location. Those two factors together point to a market where standard new-builds and existing homes are either too expensive or in the wrong places.
But there is a complication that does not get enough attention. The government data shows that local authorities have three years from the end of each base period to grant enough planning permissions to match the number of people on their register. If they fail, the unmet demand rolls over under changes introduced by the Levelling Up and Regeneration Act 2023. That sounds like a safety net, but in practice it means the backlog keeps growing. The 4,302 permissions granted in 2023-24 is the lowest figure in recent years, while the register keeps climbing. The system is under strain.
For younger buyers, the picture is even more stark. The survey found that 60% of people in their 20s are considering self-build, yet this group typically has the least access to land, capital, and construction experience. If you are in that age bracket and serious about this, your best move is to get on your local register now. It costs nothing, and it forces the council to account for your demand when planning future permissions. I would also recommend speaking to a financial advisor early on to understand what borrowing options exist for land with planning permission — because that is the step most people skip, and it is often the one that unlocks everything.
For a deeper look at how buyer behaviour is shifting across the market, you can read about the psychology behind UK homebuying decisions and why more people are looking beyond the traditional estate agent route.
Where people get stuck — and how to avoid it
The research makes one thing very clear: most people who are interested in self-build never get past the first few hurdles. The barriers are not always about money. Often they are about not knowing what is possible. Here are the most common mistakes I see, and what to do instead.
Not knowing that mortgage lenders will fund land with planning permission
The survey found that over two-thirds of potential self-builders do not realise that many lenders will allow them to borrow to buy land where planning permission has already been granted. That is a huge blind spot. If you assume you need cash for the land, you will never even look at plots. The fix is straightforward: speak to a mortgage broker who specialises in self-build. They can tell you which lenders offer land loans, what deposit you need, and how the money is released in stages as the build progresses.
Ignoring the local self-build register
Only 1 in 5 potential self-builders are signed up to their local register. That means 80% of people who are interested are not putting themselves in the system that is designed to help them. The register is not just a list. It is a legal mechanism. Under the 2015 Act, your local authority must have regard to the register when making planning, housing, and land disposal decisions. If you are not on it, your demand is invisible. Signing up takes about ten minutes on your council’s website. Do it now, even if you are only vaguely interested.
Overlooking the eco-design opportunity
The survey found that 83% of respondents want to make eco-friendly decisions about their future property, but 7 in 10 of those would only prioritise it if it was within budget. That is a realistic constraint, but it also means many people miss the chance to design energy efficiency into the build from the start — when it is cheapest. Retrofitting solar panels or better insulation later costs far more than including them in the original plans. If you are designing your own home, get an energy consultant involved before the foundations go in, not after.
Underestimating the time councils take to grant permissions
The government data shows that permissions dropped 18% year-on-year, but that does not capture how long each permission takes. Some councils are faster than others. If you are targeting a specific area, check the council’s track record on processing self-build applications. You can request this data under the Freedom of Information Act if it is not published. A six-month delay in planning can throw your entire budget and mortgage offer off course.
If you are comparing the costs of building versus buying, a guide to releasing equity or retaining your property might help you think through how to fund the project without overstretching yourself.
→ Scroll right to see all columns
| Measure | 2022-23 | 2023-24 | Change |
|---|---|---|---|
| Individuals on register | 63,701 | 64,851 | +2% |
| New individuals joining | 4,102 | 3,999 | -3% |
| Planning permissions granted | 5,246 | 4,302 | -18% |
| Groups on register | 728 | 766 | +5% |
If you are worried about security on a building site or an empty plot, a wireless security camera kit can give you peace of mind without needing professional installation. It is a small cost compared to the value of materials and tools that might be stored on site during construction.
How to actually get started with a self-build project
Writing about topics like this takes real time and research. If you buy something through an Amazon link on this page, I may earn a small commission — at no extra cost to you. It’s one of the things that makes it possible to keep BritWealth free to read. I only link to products that are genuinely relevant to the article.
If you are serious about building your own home, the process is not as complicated as it sounds once you break it down into steps. The key is to do things in the right order, because each step depends on the one before it.
Get on your local self-build register first
This is the single most important action you can take. Go to your local council’s website and search for “self-build register”. Fill in the form. It asks for your name, contact details, and the type of plot you are looking for. That is it. Once you are on the register, the council must consider your demand when planning future land releases. It also gives you access to notifications about available plots in your area. Do this before you do anything else, because it costs nothing and it puts you in the system.
Understand your financing options before you look at land
Self-build mortgages work differently from standard home loans. The lender releases money in stages — typically when the foundations are laid, when the roof is on, and when the property is watertight. You need a detailed build budget and a timeline before you apply. Speak to a broker who specialises in self-build finance. They can tell you which lenders accept land with outline planning permission versus full permission. The survey found that 69% of potential builders do not know this is possible, so you are already ahead if you ask the question.
Choose between self-build and custom housebuilding
If you want maximum control and are prepared to manage contractors, go for full self-build. If you want a designed home without the hassle of project management, look for a custom housebuilding developer. These developers prepare the land, get the planning permission, and offer a range of house designs. You pick one, and they build it. You still get input on the layout and finishes, but the risk is much lower. For most people, this is the smarter entry point.
Factor in the eco-design decisions early
The survey showed that 83% of people want an eco-friendly home, but budget constraints stop most of them. The trick is to design energy efficiency into the fabric of the house from the start — better insulation, triple glazing, and orientation for passive solar gain cost very little extra at the design stage but save thousands in energy bills later. If you are working with an architect, ask them to run an energy model before the plans are finalised. It is a small fee that pays for itself.
If you are thinking about how a self-build might fit into your long-term retirement plans, you might find it useful to read about navigating retirement property choices in the UK and whether building your own home could be part of that strategy.
- 1Join your local self-build registerVisit your council website, search for the self-build register form, and submit your details. This puts your demand on record and triggers notifications about available plots.
- 2Speak to a self-build mortgage brokerFind a broker who understands stage-release lending. Ask about land loans, deposit requirements, and how the funds are released during construction.
- 3Decide on your build routeChoose between full self-build (you manage everything) or custom housebuilding (a developer handles the build). Your budget, time, and risk tolerance will guide this decision.
- 4Incorporate energy efficiency at the design stageAsk your architect to run an energy model before finalising plans. Prioritise insulation, glazing, and orientation — these are cheapest to include now and expensive to add later.
If you are buying land that already has planning permission, a real estate lawyer can review the contract and check for restrictive covenants or easements that might affect what you can build. It is a small upfront cost that can save you from buying a plot you cannot actually use.
Frequently asked questions about self-build projects
Do I need to be a builder to do a self-build? ▾
What happens if my council does not grant enough permissions? ▾
Can I get a mortgage for land without planning permission? ▾
Is self-build cheaper than buying a ready-made home? ▾
How long does a self-build typically take? ▾
What is the difference between self-build and custom housebuilding? ▾
If you are storing tools or materials on site during a build, a small safe with a PIN keypad can keep important documents and valuables secure without taking up much space.
Your next move
The data is clear: more people want to build their own home, but the system is struggling to keep up. The gap between register demand and available plots is widening, and the window of opportunity may narrow further as councils fall behind on their obligations. Your best move is to get on the register now, speak to a specialist broker, and decide which build route suits your budget and risk tolerance. The people who succeed in self-build are not the ones with the most money. They are the ones who start early and ask the right questions.
If this was useful, you might also want to read The future of flexible living: UK co-living trends explored.
Sources and Further Reading
Downsizing dilemma: is it the key to retirement freedom or financial folly? — A look at whether selling your family home to fund a smaller property makes sense, and how that compares to building your own home from scratch.
Brexit and bricks: has the UK housing market stabilized? — An overview of how political and economic shifts have affected housing supply and prices, providing useful context for anyone planning a long-term building project.
Self-build and custom housebuilding data: 2023-24. Ministry of Housing, Communities and Local Government, 2025.
Self-build research: a third of people are considering self-build. Suffolk Building Society, 2023.
UK house building data: overview. Office for National Statistics, 2025.
