Net development value (NDV) explained

What net development value means

Net development value is the gross development value of a finished scheme after the costs of sale have been deducted. Where gross development value (GDV) is the top-line open market value of the completed units before any deduction, net development value (NDV) is what actually reaches the developer's account once the property has been sold and the disposal costs have been paid. The word net matters in the same way the word gross does: NDV is measured after deductions, so it is the net realisable proceeds rather than the headline figure.

NDV sits one step below GDV in a development appraisal. A chartered surveyor or a RICS Registered Valuer establishes the GDV first from comparable evidence, then the appraisal deducts the costs of sale to reach the net development value. From there the appraisal takes off the gross development cost and the required return to leave the residual land value. NDV is the bridge between the market value the valuer signs off and the money the developer keeps, which is why it drives both the profit calculation and the price a developer can pay for the site.

The NDV formula and its inputs

The net development value formula is short. Net development value equals gross development value minus the costs of sale. The costs of sale, sometimes called disposal costs, are the outgoings a developer incurs specifically to sell the finished units, and they are separate from the construction costs and fees captured in the gross development cost (GDC). Understanding NDV therefore means understanding exactly which costs sit inside GDV minus costs of sale.

• Estate agent fees, the sales agent's commission for marketing and selling each unit, usually quoted as a percentage of the sale price
• Legal and conveyancing fees, the solicitor's costs of transferring each completed unit to its buyer
• Sales and marketing costs, the show home, brochures, portals and advertising that bring buyers to the scheme
• Sales incentives allowance, any part-exchange, stamp duty contribution or fitted upgrade offered to secure a sale in a slower market

Add those four items together and you have the total costs of sale. Subtract that total from the GDV and you have the net development value. The formula is deliberately simple, but the accuracy of the answer depends entirely on realistic disposal cost assumptions, because an understated agent fee or a forgotten incentive quietly overstates the net sales proceeds. Any tax treatment of these costs is a matter for a qualified accountant; this is not tax advice, so speak to an accountant on your own position.

How to calculate net development value step by step

Calculating net development value follows the same discipline every time. You establish the finished value, add up the costs of sale, and take one from the other. The steps below show how to calculate net development value on any scheme, whether it is a block of flats sold unit by unit or a single asset sold in one line.

1. Establish the gross development value from comparable evidence, as the sum of each unit's sale price or the capitalised income of the let asset.
2. Set the estate agent fee as a percentage of GDV, reflecting the agency terms agreed for the scheme.
3. Add the legal and conveyancing fees for transferring each completed unit to its buyer.
4. Add the sales and marketing costs of bringing the scheme to market.
5. Add any sales incentives allowance the market requires to achieve the assumed sale prices.
6. Total the costs of sale, then subtract them from the GDV to reach the net development value.

The order matters less than the completeness. Miss a line and the NDV flatters the scheme. Once you have the net development value you can carry it into the residual method: NDV less the gross development cost less the required developer profit leaves the residual land value, the price the site can bear. Because NDV sits above that sum, a change in the disposal costs moves the land value, which is exactly why funders and arrangers read the costs of sale as carefully as the GDV.

A worked NDV example in pounds

A worked example makes the net development value formula concrete. Take a scheme of ten flats expected to sell at 250,000 pounds each, giving a gross development value of 2.5 million pounds. The table below deducts a typical set of costs of sale to arrive at the net development value. Every figure is illustrative only and is not an offer of finance.

In this illustration the costs of sale total 97,500 pounds, so the net development value is 2,402,500 pounds against a gross development value of 2.5 million pounds. That difference of 97,500 pounds is the gap between the headline value and the net sales proceeds, and it is money that never reaches the developer. Adjust the agent fee, the incentive package or the marketing spend and the NDV moves accordingly. These figures are indicative and for illustration only.

How NDV differs from gross development value

Gross development value and net development value are the same finished scheme viewed before and after deductions. GDV is the market value of the completed units before any cost of sale is removed. NDV is that same value after the costs of sale are removed. The distinction is small in words and material in pounds, because the costs of sale sit entirely between the two. Our companion guide to gross development value at /guides/gross-development-value-explained/ sets out how a valuer assesses the GDV in the first place.

Net development value is close to, but not always identical to, net realisable value and net sales proceeds. Net realisable value is a risk-adjusted disposal figure that a valuer may set below the aggregate unit value to reflect a single-line sale or a distressed timescale, whereas NDV in an appraisal is simply GDV less normal costs of sale. Net sales proceeds is the accounting description of the same net figure once a sale completes. All three describe value after deductions rather than before them, which is what separates them from GDV. Where these figures affect your tax position, that is a matter for an accountant and not tax advice from us.

Whether lenders size a facility on NDV or GDV

Development finance and development exit finance are usually sized against gross development value, not net development value, through a loan to GDV (LTGDV) percentage. Funders anchor to GDV because it is the figure the RICS Red Book valuation reports and because the costs of sale are a movable assumption rather than a valued number. On a finished-scheme bridge we can indicatively place leverage up to around 70 to 75 percent of GDV, with the exact figure depending on the asset, the sales rate and the strength of the comparable evidence. Our guide to loan to GDV at /guides/loan-to-gdv-explained/ explains how that percentage works.

Net development value still matters to the structure, because it is the figure the exit is actually paid from. The facility is redeemed out of net sales proceeds as units sell, so the NDV is what has to clear the loan, the interest and the developer's return. When we read a development appraisal we start from the GDV the valuer signs off, deduct the costs of sale to the net development value, then work down through the gross development cost to the profit and the residual land value, exactly as a funder does. That way the leverage we place is supported by the money the scheme really banks, not just its headline value.

DevExit is a finance arranger and introducer, not a lender, and we are not authorised by the Financial Conduct Authority. The development exit funding we arrange is unregulated commercial lending. Every figure we quote is indicative, illustrative and not an offer of finance, and the binding numbers come from the valuer's GDV, the assumed costs of sale and the funder's terms.