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Development Viability Testing Mechanics & Application

Learn about viability testing mechanics including data collection, residual value & cash flow calculation, reality check, and data interpretation for development projects. Ensure all income and construction data is sourced accurately. Engage in consultation for vital input.

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Development Viability Testing Mechanics & Application

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  1. Session 3: The Mechanics of viability testing

  2. A simple development viability appraisal • Data Collection • Calculation (Residual Value, Cashflow) • Reality Check • Interpretation • Use of data Note: Will discuss consultation later – it is vital and required!

  3. Data Collection Rubbish in = Rubbish out All inputs MUST be sourced!

  4. Income Data

  5. Income Data • Basic Prices by £/m2 • Residential Prices – House v flats • Commercial / non-residential • Affordable Prices • New v existing • Incentives and discounts • Variance by location or situation? • Grants, subsidies

  6. Gross internal area? • BCIS (the costs) as ‘Rate per m2 gross internal floor area for the building’ • Direct from developers • Calculate – it will be an estimate

  7. Income Data - Residential • Land Registry • Hometrack • Rightmove / Zoopla / Mouseprice • Halifax / Nationwide • CORE • Developers and RPs

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  10. Income Data – Non-Residential • EGi Data / EGI Property Link • Agents • Valuation Office Agency • Developers

  11. EGI – Propertydata

  12. EGI Property Link

  13. Costs

  14. Construction • BCIS • Site Costs • Abnormals • Contingency

  15. BCIS

  16. Construction • BCIS • Site Costs – 10% to 20% • Abnormals – site by site Highways, flooding demolition, design, decontamination etc. • Contingency – 2.5% Greenfield 5% Brownfield +7% on horrible sites

  17. Phasing and Build Rate Size of site Size of developer Availability of mortgages Pre 2007 45 to 50 per year Now? 30 to 35 per year Multiple developers

  18. Variables • Small Changes of cost or income can have a huge difference in result – the bigger the numbers the more sensitive. • 101-100=1 but 102-100=2 • 1% change in price results in a 100% change in outcome • Scenarios – cost and price change policy requirements

  19. Building the model up and scenario testing • Discounted Cash Flow • NPV • IRR • Return On Capital Employed (ROCE)

  20. Monitoring Viability By reference to indices: Costs BCIS GDV Land Reg Halifax / Nationwide Composite Academetrics Hometrack Rightmove / Zoopla / BUT – have new build followed wider market?

  21. Assumptions and testing “make some very cautious and transparent assumptions with sensitivity testing of the robustness of those assumptions it is important that variations against baseline costs, as well as values, are tested.” (page 27 – Harman)

  22. Consultation • Why • Who with • When • So what and what do you do with the results?

  23. Consultations Engagement • A fundamental part of plan making and a requirement of NPPF, CIL Regs, Harman Guidance • Don’t be afraid to ask the developers • For some evidence to support figures • To explain / for detail • Record process and comments METICULOUSLY • What have you actually asked and is it in the context of delivering the development plan

  24. Engagement Phases • Delay at your peril • Two or three stages

  25. Stage 1 Engagement • Background and why • Methodology • Viability test • Appraisal assumptions • Not results • Certainly not policy Stage 1 includes establishing agreement on methodology and assumptions (build costs, sale prices etc.) Does not include workings.

  26. Stage 2 Engagement • Changes made from first consultation (or not) • Methodology • Viability test • Appraisal assumptions • Draft Results • Emerging conclusions • Still not policy

  27. Stage 3 Engagement • Results • Factors other than viability to consider • Emerging and developing policy • Changes to existing policy • Approve now or hang on?

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