Gross value added: what GVA means in planning evidence
GVA is the headline number in most economic cases and the one officers trust least. Here is how to build it from sourced inputs and present it so it carries weight.
Gross value added, usually shortened to GVA, measures the value an activity adds to the economy: the value of its output less the cost of the goods and services bought in to produce it. In planning evidence it turns up as a headline number in an economic case, often expressed as annual GVA generated by a scheme once it is operating. Officers treat those numbers cautiously, and the reason is almost always that the assumptions behind them were not shown.
What GVA measures and what it does not
GVA is an output measure. It captures the contribution an activity makes to national or regional income, and it is the building block that sums to gross domestic product once taxes and subsidies on products are added.
It is not a measure of profit, of turnover, or of public benefit. A scheme with a large GVA figure may deliver few local jobs. A scheme with a modest figure may transform a town centre. Committee members work that out quickly, so an economic case that leans on a single large number without explaining who benefits tends to land badly.
Two things GVA never tells you on its own: whether the activity would have happened anyway somewhere else in the same area, and whether the jobs will go to local residents. Both belong in the assessment, and both are where a case is won or lost.
Where the per job figures come from
Most planning economic cases build GVA from the bottom up. They estimate floorspace, convert floorspace to jobs using employment density assumptions, then multiply jobs by a GVA per job figure for the relevant sector and area.
Each step needs a source. The Office for National Statistics publishes regional GVA by industry, and dividing that by workforce jobs gives a defensible GVA per job for a sector in a region. Employment densities come from published density guidance, and the density used for a warehouse differs enormously from the density used for an office.
State the price basis too. GVA can be quoted in current prices or in constant prices for a base year, and mixing the two across a series produces nonsense. Give the year, the geography and the source for every figure. An assessment that says "GVA per job in the sector" without a citation invites the officer to substitute their own number, which is rarely a better outcome for the applicant.
Direct, indirect and induced effects without double counting
Economic impact is conventionally split into three layers.
| Effect | What it covers | Where errors creep in |
|---|---|---|
| Direct | Activity on the site itself | Counting gross jobs rather than net additional ones |
| Indirect | Supply chain purchases | Applying a national multiplier to a local area |
| Induced | Spending of wages in the wider economy | Counting the same spending twice through two routes |
Multipliers convert direct effects into total effects. The larger the geography, the larger the multiplier that can be justified, because more of the supply chain stays inside the boundary. Applying a national multiplier to a district economy overstates the result, and experienced officers spot it immediately.
The corrective framework comes from central government appraisal guidance: adjust for deadweight, the activity that would have happened anyway, for displacement, the activity taken from elsewhere in the area, for leakage, the benefits accruing outside the target area, and for substitution. Applying those adjustments openly, with the percentages stated and justified, does more for credibility than a bigger headline number.
Illustrative example: a 9,000 m² distribution unit is estimated to support a certain number of direct jobs using published density assumptions. Applying a regional GVA per job figure gives a gross annual GVA. Deducting 20 per cent for displacement from other local sites and 15 per cent for leakage to workers living outside the district gives the net additional figure that the officer report can use. The percentages here are illustrative and would need local justification.
Construction phase and operational phase claims
Construction GVA is real but temporary. It is normally expressed as person years of employment during the build, converted to a one-off GVA contribution, and it should never be added to annual operational GVA as though the two were the same thing.
Officers apply less weight to construction benefits precisely because they end. Where the construction case matters, tie it to something durable: apprenticeship commitments, local labour and supply chain agreements, or training obligations secured through a section 106 agreement. A promise in a supporting statement carries no weight. A clause in an obligation does.
Operational GVA carries more weight, and more weight again where the use is one the local plan is trying to attract, such as employment land in short supply or a sector named in an economic strategy.
Phasing matters as well. A scheme that will be built out over eight years should show when the operational benefits actually begin, because a benefit claimed for year one and delivered in year six is worth less in the balance. Where the application is outline, say what the figures assume about the eventual occupier, since a distribution shed and a research building on the same plot produce very different employment densities and very different GVA.
Why officers discount optimistic multipliers
Case officers see economic assessments constantly, and a familiar pattern emerges: gross jobs presented as net, national multipliers applied locally, no displacement adjustment, and a construction figure stacked on top of an operational one. When one of those appears, the whole assessment loses credibility, including the parts that were sound.
The tilt in the planning balance is also narrower than applicants hope. Economic benefit is a material consideration, and in some cases a substantial one, but it does not answer harm to heritage assets, to the Green Belt or to residential amenity. It sits on the benefit side of the scales and is weighed against whatever harm has been identified. Our note on very special circumstances in the Green Belt shows how demanding that weighing becomes where a policy presumption applies.
The same discipline applies to the numbers used in a viability assessment, where our explainer on benchmark land value covers the equivalent trap on the land value side.
Presenting GVA so a committee report can use it
Write the economic case so a case officer can lift the figures into a committee report without redoing the arithmetic.
- Give one table with gross and net figures side by side, and show the adjustment percentages between them.
- Cite the source, year, geography and price basis for every input.
- Separate construction from operation and label the construction figure as one-off.
- State the geography for which each benefit is claimed, whether ward, district or region.
- Say plainly what is uncertain, rather than presenting a range as a point estimate.
That level of transparency is unusual enough to be persuasive. It also makes the assessment defensible at appeal, where an inspector will test the assumptions rather than the headline.
The numbers belong in an Economic Impact Assessment, with the planning argument built on them in the supporting statement. PlanScope drafts that narrative around your figures and flags where a source is still missing.
This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it.
PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.
Frequently asked questions
What is gross value added in simple terms?
It is the value of what an activity produces less the cost of the goods and services bought in to produce it. Summed across the economy and adjusted for taxes and subsidies on products, it gives gross domestic product. It measures contribution to economic output rather than profit, turnover or wider public benefit.
Where do GVA per job figures come from?
Usually from Office for National Statistics regional GVA by industry, divided by workforce jobs for the same sector and area. Employment densities used to convert floorspace into jobs come from published density guidance. Always state the source, the year, the geography and whether figures are in current or constant prices.
What is the difference between gross and net additional impact?
Gross impact is the raw estimate on the site. Net additional impact deducts deadweight, the activity that would have happened anyway, displacement from other local businesses, leakage of benefits outside the target area, and substitution. Central government appraisal guidance sets out that framework, and officers expect the adjustments to be stated with justification.
Can construction jobs be added to operational jobs?
No. Construction impacts are temporary and are normally expressed as person years of employment and a one-off GVA contribution. Operational impacts are annual and recurring. Adding the two together overstates the case, and it is one of the errors that leads officers to discount an entire economic assessment.
How much weight does economic benefit carry in a decision?
It is a material consideration and can be substantial, particularly where the use is one the local plan is seeking to attract. It does not answer identified harm to heritage assets, the Green Belt or residential amenity. It sits on the benefit side of the balance and is weighed against that harm case by case.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.