Estimate potential housing yield using site area, density assumptions and developable land percentage. This early-stage UK site yield calculator is designed for landowners, developers, agents and planning teams.
This is an early-stage estimate only. Real layouts depend on access, drainage, landscape, parking, local policy, site constraints, ecology, heritage, topography and planning context.
This tool gives a first-pass estimate of how many homes could potentially fit on a piece of land. It is useful at the early idea stage, before paying for a full design package, feasibility layout or pre-application submission.
If you own land and want to understand whether it may have development potential, this calculator gives a simple starting point. It can help you sense-check whether the site may support a small infill scheme, a medium residential layout or a larger housing development.
Developers can use the tool to test basic assumptions before a more detailed site appraisal. Adjust the developable area and density to see how roads, open space, constraints and layout efficiency may affect the number of homes achievable.
The estimate is based on total site area, the percentage of land likely to be developable, and an assumed density measured in dwellings per hectare.
For example, a 2.4 hectare site with 68% developable land gives 1.63 hectares of developable area. At 35 dwellings per hectare, that produces an estimated yield of around 57 homes.
Two sites with the same area can produce very different outcomes. Access points, road design, parking strategy, drainage, trees, site shape, levels and surrounding character can all change the final layout.
That is why the calculator provides a likely range, not a fixed planning answer.
A proper site review can test access, density, constraints, planning risk and layout efficiency. This is where a simple calculator turns into a realistic development strategy.
This calculator can sit within a wider land development tools hub, supported by feasibility, planning risk and GDV calculators.
It depends on the site, location and planning context. Lower density sites may be around 20–30 dwellings per hectare, while many suburban sites may sit around 30–45 dwellings per hectare. Urban sites can be higher, but they need careful design and planning justification.
Dwellings per hectare, often shortened to dph, is a way of measuring housing density. It shows how many homes are proposed for each hectare of land.
Developable area is the part of the site that can realistically be used for housing and associated layout. It usually excludes major roads, drainage features, large open space areas, retained landscape, ecological buffers and unusable land.
Most residential sites need space for roads, footways, drainage, open space, landscape buffers, parking, turning heads and retained features. A site may look large on paper, but not every part of it can be used for housing.
No. It provides an early housing yield estimate only. Planning permission depends on local policy, site allocation, access, highways, landscape, ecology, drainage, design quality and consultation with the local planning authority.
Not always. Higher density can improve land value and efficiency, but it must still respond to local character, parking, amenity, access, open space and planning policy. A lower but better-designed scheme may have a stronger chance of approval.
Village edge and rural sites often need a more sensitive approach. A lower density assumption may be more realistic, especially where landscape, settlement character, access or local objections are likely to be important.
Urban infill sites may support a higher density, especially where surrounding development is already compact. However, overlooking, parking, access, daylight, amenity and neighbour relationships can quickly limit what is achievable.
A good masterplan can improve yield by arranging roads, plots, open space and constraints more efficiently. It can also reduce wasted land, improve frontage, create better movement and make the planning argument stronger.
A professional review is useful once you have a site boundary, approximate area and a serious interest in development. Early advice can help avoid overpaying for land, underestimating constraints or submitting a weak layout.
