Gross Development Value (GDV) is the projected total value of a development once complete and fully sold or valued at market rates. It is the headline number in a development appraisal and the primary anchor for most development finance lending metrics. Getting GDV right matters â an over-stated GDV leads to over-leveraged finance and a project that cannot service or repay its debt.
How GDV Is Calculated
For a residential development: GDV = the expected sale price per unit à number of units
For a mixed-use scheme: GDV = residential sales values + commercial property value (capitalised rent or freehold sale value)
For a retained scheme (buy-to-let, build-to-rent): GDV = the stabilised value of the completed income-producing asset, calculated as the rental income divided by the applicable yield
Example: 10 residential units expected to sell at £350,000 each = GDV of £3,500,000
GDV is not a guarantee â it is a projection. The actual realised values may be higher or lower, and the timing of sales affects cash flow even if prices match projections.
Where GDV Comes From
GDV is normally supported by:
- Comparable sales (comps): recent sales of similar units in the same area â the primary evidence base
- Estate agent appraisals: opinions from local agents on achievable sales prices
- RICS valuation: for development finance, lenders commission an independent RICS-qualified valuer to assess GDV. The lender uses this valuation â not the developer’s own estimate â for underwriting
The lender’s RICS valuation may be lower than the developer’s projected GDV if the valuer takes a more conservative view of comparable sales, market conditions, or the specific scheme’s appeal. This is a common source of financing shortfalls â the developer appraises at £4m GDV; the RICS valuation comes in at £3.6m; the available debt reduces accordingly.
How Lenders Use GDV
Lenders cap their exposure as a percentage of GDV â typically:
- Senior development finance: 55â65% of GDV [VERIFY current market range]
- Stretch senior: up to 70â75% of GDV [VERIFY]
- Senior + mezzanine: up to 80â85% of GDV in total [VERIFY]
The LTGDV (Loan to GDV) cap exists to ensure the lender is adequately secured even if development costs overrun, the market softens, or not all units sell at projected prices.
Example: A lender with a 65% LTGDV cap on a scheme with a £3.5m GDV will advance a maximum of £2.275m in total debt.
GDV vs Net Realisation
GDV is gross â it does not account for sales and marketing costs, legal fees, estate agent fees, or post-completion professional costs. Net realisation (or net realisable value) deducts these costs and reflects what the developer actually receives.
In a development appraisal, lenders and developers typically model at GDV for the financing metric but use net realisation to assess whether the project is genuinely viable. Sales costs and agent fees of 2â3% of GDV can represent significant sums on larger schemes. [EDITORIAL JUDGEMENT]
GDV for Income-Producing Schemes
For schemes where the exit is refinancing onto a term mortgage (e.g. a BTL portfolio or BTR development), GDV is the capital value of the completed income-producing asset. This is calculated as:
GDV = net annual rental income ÷ applicable market yield
A higher yield (reflecting higher perceived risk or lower market confidence) reduces the GDV. A falling yield market increases GDV. This makes GDV for income-producing schemes sensitive to interest rate and market conditions in a way that residential-for-sale GDVs are not. [EDITORIAL JUDGEMENT]
Related Pages
- Loan to Cost (LTC) Explained
- Development Finance Costs Explained
- Ground-Up Development Finance
- GDV, LTC and LTV Calculator