Which building plot should you buy? A feasibility checklist

Buy a viable proposition, not just an attractive site

A plot's asking price is only one part of the cost of creating a home. A low price may reflect limited access, uncertain planning prospects, difficult ground or expensive service connections. Before choosing, compare what each site can realistically deliver for the same total budget.

Start with the intended home: approximate accommodation, access needs, outdoor space and priorities. Then test whether the site can accommodate that brief within its planning and physical constraints. A drawing in a sales brochure is not proof that the scheme can be approved or built.

Establish exactly what planning status exists

Obtain the decision notice, approved drawings, conditions and relevant history. Check whether permission is outline or detailed, what remains to be approved and whether time limits or conditions create a problem. A claim that a plot has planning potential should be investigated separately from an existing permission.

Review local policies, heritage constraints, trees, ecology and flood risk. Biodiversity net gain requirements and exemptions must be checked against current rules and the application date; do not assume that calling a proposal self-build makes it exempt. Ask what investigations are needed before an application can be properly assessed.

Investigate the practical constraints

• Legal and physical access for residents and construction.
• Title restrictions, easements and boundary uncertainties.
• Ground conditions, contamination and changes in level.
• Water, drainage, power and other service connections.
• Trees, neighbouring foundations and nearby infrastructure.
• Delivery space, storage and construction logistics.

A solicitor should check legal rights and restrictions. Appropriate surveyors and engineers should investigate physical risks. These findings can change both the design and the amount you should be prepared to pay.

Compare plots using a complete appraisal

Add land cost, acquisition costs, investigations, design, approvals, construction, services, finance and contingency. Include obligations or charges that apply to the actual scheme. Obtain evidence for the likely completed value if resale or refinancing is part of the plan.

Call us at the early stages—ideally before making an unconditional commitment. Send the listing, site address, available plans and budget. We can work with you to test architectural feasibility and identify the further checks needed. For an auction or short purchase deadline, seek legal advice promptly: the timetable may leave little room to resolve an uncertain site after commitment.