The short version
- · Serviced plot — all-in-one, highest price, fastest start.
- · Custom build plot — serviced with a design code; lower risk, less freedom.
- · Full permission — approved design; build as-is or apply for amendments.
- · Outline or PiP — principle agreed, details still to win; mid-price, 6-12 months work.
- · Raw land — cheapest and slowest; full planning and connection risk on you.
Serviced plot
A serviced plot has planning permission already granted and water, electricity, drainage and a road brought to its boundary. The developer has done the planning fight and paid the utility connections; you're buying a building site with everything in place. The most expensive plot type — typically 60-80% more than the same plot in raw form — but the fastest to start building on.
Most serviced plots in the UK sit on custom build sites (see below), but you also find them on small enabling developments where a landowner has worked up a few plots for sale. In both cases, expect the plot price to include a 17-22% developer margin and the cost of permission, services and access roads.
Best for: first-time self builders, anyone with limited time, projects where speed-to-move-in matters. Time to start: weeks. Planning risk: zero. Design freedom: whatever the permission allows, sometimes constrained by a design code.
Custom build plot
A custom build plot is a serviced plot sold with a plot passport — a design code covering scale, materials, roof line, fenestration and sometimes layout that your house must comply with. The passport ensures the finished street has visual coherence, and lets the developer get planning permission for the whole site in one go.
For the buyer, the trade-off is straightforward: you accept design constraints in exchange for plug-and-play planning and a guaranteed timeline. Many custom build sites also offer optional services — a panel of approved architects, a list of recommended contractors, sometimes a project management service. Use as much or as little of the support as you want.
Best for: self builders who want design input but not planning risk. Time to start: weeks. Planning risk: zero, provided you comply with the passport. Design freedom: bounded but real — colours, internal layout, sometimes elevation details.
Plot with full planning permission
A specific house design is already approved for the plot. You can build the approved design as-is, or apply for amendments to tweak it. Services may or may not be connected — check the contract carefully. Mid-priced: you're paying for the planning work but typically absorbing utility connection costs.
The amendments route matters in practice. Non-material amendments (Section 96A) cover small changes that don't materially affect the scheme — moving a window, adjusting a roof pitch. Larger changes need a Section 73 application to vary conditions, or a fresh permission. Either route adds months and the council can refuse, so price design changes into your plan rather than assume them.
Best for: self builders happy with an approved design, or with small adjustments. Time to start: 1-3 months for connections and amendments. Planning risk: low for the approved scheme; real for substantive changes. Design freedom: what's approved, plus minor amendments.
Plot with outline permission or PiP
The principle of residential development is agreed, but the details — size, layout, materials — still need approval through a Reserved Matters or Technical Details Consent application. Two flavours:
Outline planning permission — the older, more flexible route. The outline grants permission in principle on stated parameters; the Reserved Matters application fills in the design. Time from outline to permission to build: typically 6-9 months.
Permission in Principle (PiP) — introduced 2017, designed for small sites of 1-9 dwellings. The PiP grants permission for residential use; the Technical Details Consent (TDC) approves the design. Statutory 5-week determination for TDC, but 8-12 weeks is more realistic.
Best for: self builders who want design freedom without raw-land risk. Time to start: 6-12 months. Planning risk: moderate — the principle is secure, but the council can reject your details. Design freedom: high, within parameters.
Unserviced plot (raw land)
No planning permission, no services. The cheapest plot type — often 80-90% below the same plot's value once permitted — and the highest risk. You apply for permission yourself, arrange utility connections, and absorb the chance that permission is refused, costs to connect are higher than expected, or ground conditions are unfavourable.
Eighteen to twenty-four months before first spade is typical. But raw land is also the only route to most off-market and rural opportunities — owners often won't take on the planning work themselves, so the cheapest deals never reach the open market with permission attached. If you can find them and have the patience to take them through, the gap is real.
Run a free site assessment before committing — a raw plot needs constraint analysis (Green Belt, AONB, flood zones, designations, allocations) before you can price the planning risk meaningfully.
Best for: experienced self builders, those with time and risk capital, anyone hunting for off-market opportunities. Time to start: 18-24 months. Planning risk: high. Design freedom: total, subject to local plan and design context.
At a glance
| Plot type | Planning | Services | Price | Time to start |
|---|---|---|---|---|
| Serviced plot | Granted | All connected | Highest | Weeks |
| Custom build | Granted + code | All connected | High | Weeks |
| Full permission | Approved design | Variable | Mid-high | 1-3 months |
| Outline / PiP | Principle only | Usually none | Mid | 6-12 months |
| Unserviced | None | None | Lowest | 18-24 months |
Find your fit
Three quick questions on your planning risk appetite, design freedom and timeline. The result is the plot type most consistent with your answers — a signpost, not a commitment.
Interactive — plot finder
Which plot type fits you?
Three quick questions. The recommendation links back to the definition above.
How much planning risk are you willing to take on?
How much design freedom matters to you?
What's your timeline to start on site?
Frequently asked
What are the different types of self build plot in the UK?
Five main types: serviced plots (planning + services in place), custom build plots (serviced with a design code), plots with full planning permission, plots with outline permission or PiP (Permission in Principle), and unserviced raw land. Each trades off cost, time-to-start, design freedom and planning risk differently.
What is a serviced plot?
A serviced plot has planning permission already granted and water, electricity, drainage and a road connected to its boundary. The developer has taken on the planning and infrastructure risk and you pay for that work in the price. The fastest plot type to start building on — often within weeks of completion.
What is a custom build plot?
A custom build plot is a serviced plot sold with a 'plot passport' — a design code covering scale, materials and layout that your house must comply with. Your design freedom is limited but your planning risk is too. Often the easiest first self build, especially on a master-planned custom build site.
What is Permission in Principle?
Permission in Principle (PiP) is a two-stage consent. Stage one agrees the principle of residential development on the plot (location, scale, use). Stage two — Technical Details Consent — approves the specific design before you can build. Plots with PiP cost less than full-permission plots because the buyer absorbs the detailed design risk.
Is raw land cheaper than a serviced plot?
Yes — typically 80-90% cheaper than the same plot once permitted and serviced. The discount reflects the risk you're taking on: planning may be refused, the council may require infrastructure improvements you didn't budget for, ground conditions may be unfavourable. Raw land suits self builders who can absorb risk and have time.
Which plot type is best for a first self build?
Serviced plots and custom build plots have the lowest risk and the fastest start. If you have time and want maximum design control, a plot with full planning permission lets you build approved drawings without taking on the planning fight. Raw land is the highest-upside option but suits experienced self builders or those with patience and risk capital.
Can I change the design on a plot with full permission?
Yes, within limits. Non-material amendments (Section 96A applications) cover small changes that don't materially affect the approved scheme — typically 6-8 weeks. Larger changes need a Section 73 application to vary conditions, or a fresh permission. Either route adds months and the council can refuse, so price it into your plan.
Disclaimer. The quiz result is an indication based on three questions and not a substitute for site-specific advice. The right plot type depends on your finances, planning context, local plan policies and personal risk tolerance. Run a free site assessment before committing to any plot.
Related