📊 Viability Assessment

Quick residual land value appraisal for affordable housing and S106 negotiations. Assess whether your scheme is viable with the LPA's policy requirements, or build the case for reduced contributions.

Revenue

Total Units

Average Unit Size (sqm GIA)

Market Sale Price (£/sqm)

Average £/sqm for market units in this area.

Region

Costs

Build Cost (£/sqm)

BCIS median for this build type.

External Works (%)

Professional Fees (%)

Contingency (%)

Developer Profit (% of GDV)

Typically 15-20% for market, 6% for affordable.

Finance Cost (% of costs p.a.)

Build Period (months)

Marketing & Sales (%)

Policy Requirements

Affordable Housing (%)

Affordable Transfer Price (% of market)

RP transfer price as % of open market value.

CIL Rate (£/sqm)

S106 (£ per unit)

Benchmark

Benchmark Land Value (£)

Existing Use Value + premium, or market evidence.

Running viability appraisal...

About this tool: Viability Assessment

Residual land value appraisal — revenue projection, cost inputs, benchmark land value, and Section 106 negotiation headroom analysis.

When to use it

Use when an LPA requires affordable housing or S106 contributions and you believe these make the scheme unviable. Also useful for land purchase decisions.

Policy and guidance it draws on

NPPF Viability guidance, PPG Viability

Part of Financial Intelligence

Use these tools to understand the financial side of your project — what fees you'll pay, whether the scheme is viable, what CIL/S106 might cost, and whether your land value assumptions stack up. Essential for go/no-go decisions.

Guidance to help you prepare — not formal planning advice. Check the current policy text and your council's local plan before relying on it.

📊 Viability Assessment

About this tool: Viability Assessment

🤖 Planning Agent