Appealing the loss of employment land or floorspace

An appeal against the loss of employment land or floorspace is won on evidence rather than argument. In a loss of employment land appeal the inspector wants to know what the site was marketed at, for how long, who enquired, why they walked away, and what the arithmetic says about keeping the building in industrial or office use. Where that evidence is thin the protective development plan policy does the work and the appeal is dismissed. Where it is complete, national policy gives the inspector a clear route to allow the scheme.

What the policy actually protects

Read the refused reason against the exact wording of the policy it cites. Protective policies fall into three rough families, and they behave differently on appeal.

The first family protects a site allocated for employment use in the adopted plan. The second protects a defined employment area or industrial estate as a whole, usually resisting non-employment uses anywhere inside the boundary. The third protects employment floorspace wherever it sits, including a single workshop in a residential street, and is often drafted around loss of local jobs rather than land supply.

That distinction decides your case. An allocation argument is about land supply over the plan period. An employment area argument is about the coherence and function of the estate, so a small edge-of-estate plot is easier than a plot in the middle. A floorspace argument is about the individual building, which is where marketing and viability evidence matters most.

National policy helps here. The National Planning Policy Framework (August 2026 edition), in its chapter on the economy, tells decision-takers to avoid the long-term protection of sites allocated for employment use where there is no reasonable prospect of the site being used for that purpose. The words "reasonable prospect" are the ones to build the case around. They set a practical test, not an absolute bar, and they invite exactly the marketing and viability evidence a refusal usually says is missing.

Section 38(6) of the Planning and Compulsory Purchase Act 2004 still applies, so a conflict with an up-to-date protective policy has to be outweighed by other material considerations. Your job is to show the conflict is more apparent than real, or that the harm is small against the benefits.

Marketing evidence and how long is enough

Marketing evidence is the single most common weakness. Councils refuse because the marketing was too short, priced above the market, aimed at the wrong occupiers or not evidenced at all.

There is no statutory marketing period. Some adopted policies and supplementary planning documents set one, expressed in months, and the figure differs between plans, so read the policy before you start rather than after. Where the plan is silent, the inspector judges whether the campaign was genuine.

A campaign that stands up on appeal usually shows:

1. A named commercial agent instructed in writing, with the instruction letter and the terms in the appendix.
2. Continuous availability, with dated evidence of board erection, portal listings, particulars and mailshots rather than a single screenshot.
3. Quoting terms that a local agent would call realistic for the age, condition, eaves height, yard and access of the building.
4. An enquiry log recording each approach, the use sought, the reason it did not proceed and the date.
5. At least one price reduction or a change in the terms offered, with the rationale.

The enquiry log carries more weight than the length of the campaign. Twelve months of marketing with fourteen logged enquiries, all of which failed on the same defect, tells an inspector more than three years of a board on a fence with nothing behind it.

Be honest about the defect. A 1960s single-storey unit with 3.5 m eaves, no separate service yard and access through a residential street will not let to a modern logistics occupier, and saying so plainly is stronger than implying the market is simply quiet.

Viability of continued employment use

Refusals often assert that the building could be refurbished and relet. Answer that with numbers rather than adjectives.

The structure of the appraisal is the same as any other planning viability exercise: the cost of putting the building into a lettable state, the rent and yield an agent will support, the resulting value, and whether that value exceeds the cost plus a return. Where it does not, continued employment use is not viable and the protective policy is protecting a vacancy. A viability assessment prepared on that basis, with the agent's rental and yield advice as an appendix, does more for the appeal than a general statement about market conditions.

Keep the method transparent and conventional. The RICS professional statement on financial viability in planning expects inputs to be stated, sourced and capable of being tested, and inspectors read appraisals with that expectation. Assumptions that appear only in a spreadsheet, without a paragraph explaining them, get discounted.

One honest caution. Viability arguments are weaker where the appellant bought the site recently at a price that only works with residential consent. Inspectors notice, and benchmark land value is the point at which they notice.

Quantitative and qualitative need evidence

The council's case usually rests on an employment land review showing a shortfall of land or floorspace. Test it rather than accept it.

Check the base date, whether the study counted the appeal site as available, whether it netted off sites with extant consent for other uses, and whether the supply figure includes land that has sat undeveloped through two plan periods. A shortfall built on notional availability is a weak foundation. An Employment Land Assessment that sets your site against the council's own supply figures, using the council's own study as the starting point, is harder to dismiss than a general assertion that demand has moved elsewhere.

Qualitative need cuts both ways. If the district is short of modern industrial units with 10 m eaves and your site cannot deliver them, the shortfall is real but your site is not the answer to it. Say that. Conceding the quantitative point while showing the site is qualitatively unsuitable is a coherent case, and it reads better than denying every element of the council's evidence base. This is the same discipline as deciding which refusal reasons are worth appealing in the first place.

Mixed use as a compromise

Where the policy protects floorspace rather than land, retaining part of the employment use often resolves the objection. Ground-floor workspace under residential upper floors, a reduced but purpose-built unit at the rear, or a managed workspace block held by a provider are all outcomes inspectors have accepted where the scheme was properly designed.

The compromise only works if the retained space is lettable. Three points decide that.

• Floor-to-ceiling height, loading arrangements and separation from the residential entrance, so the space suits the uses the market actually wants.
• A service and refuse strategy that does not rely on the residential cores or on a shared lobby.
• Acoustic separation designed for the retained use rather than for a quiet office, because a noise condition that limits operating hours will make the space unlettable later.

Token workspace fails. A 40 m² unit with 2.4 m headroom and no yard, offered as mitigation, invites the finding that the employment element is notional.

Where the allocation is out of date

Plan age changes the balance. Where the protective policy sits in a plan whose employment evidence base predates a material shift in the local market, the policy carries less weight as a matter of judgement, and that is an argument to make explicitly rather than leave the inspector to infer.

Look for three things. Whether the plan has passed the end of its period. Whether the employment study underpinning the allocation has been superseded by a later review the council itself commissioned. And whether the council has granted permission for non-employment uses elsewhere in the same allocation or estate, because consistency of decision-making is a material consideration.

Decisions on comparable sites in the same authority are worth assembling properly. Guidance on using appeal decisions as evidence applies with full force here, and the same care belongs in the statement of case, where the policy conflict has to be addressed head on rather than buried.

Conditions and clawback arrangements

Offer the inspector a way to say yes with control attached. Three mechanisms recur.

A condition requiring the retained employment floorspace to be fitted to a defined specification and made available before occupation of the residential element deals with the fear that the workspace will never be built. A section 106 obligation requiring a marketing period for the retained space at agreed terms, with a fallback to an alternative Class E use only after that period, deals with the fear that it will sit empty and then change use. And a clawback or overage clause, where the council has a land interest, deals with the argument that the appellant is capturing uplift created by the loss of a protected allocation.

Draft the heads of terms before the appeal is lodged and include them in the statement of case. An obligation produced late, or offered only in closing, gives the inspector a reason to dismiss on the ground that the mitigation is uncertain.

The appeal itself follows the ordinary route under section 78 of the Town and Country Planning Act 1990, and non-householder appeals must reach the Planning Inspectorate within six months of the decision notice. Missing that date ends the argument before it starts.

PlanScope drafts an Employment Land Assessment, a Viability Assessment and the supporting Planning Statement from your site details and your own evidence, with "TO BE CONFIRMED" flags wherever a figure is missing. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. For specialist technical reports, qualified professional input may be required, and a viability appraisal intended for an appeal should be signed by a suitably qualified valuer.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. To scope the evidence base for a site, browse the 66 report types and start a draft.