Class MA Prior Approval Refused: What Are Your Options?

What a Class MA Refusal Actually Means

As covered in our complete guide to Class MA, the permitted development right to convert a Class E commercial building to residential use (Class C3) comes directly from Schedule 2, Part 3 of the Town and Country Planning (General Permitted Development) (England) Order 2015, as amended. Prior approval is not the same process as full planning permission. It is a lighter check where the council confirms whether specific, prescribed matters are satisfactorily addressed.

A refusal notice is the council saying it is not satisfied on one or more of those prescribed matters, as evidenced by the application you submitted. It is not a rejection of the principle of residential use on your site, and it is not a decision that your building can never be converted under Class MA.

That is genuinely useful to know, because a refusal can feel final. In practice it usually means one thing needs fixing: often the daylight to a handful of rooms, or an unresolved noise question, not the whole scheme.

The Only Grounds a Council Can Refuse On

This is the single most important fact for anyone dealing with a Class MA refusal. Unlike full planning permission, where a council can weigh almost any material consideration, prior approval refusal is confined to a closed list of nine matters set out in the legislation. A valid refusal notice has to point to one or more of these:

This list has been stable since Class MA was introduced in 2021. The March 2024 amendments that removed the floorspace cap and the vacancy requirement changed who can apply, not what the council can assess once you have applied.

Which Reasons Come Up Most Often

Of the nine matters, two account for the great majority of refusals we see and that come up repeatedly in planning press coverage of Class MA decisions: natural light and noise. Neither is a surprise once you understand what kind of buildings Class MA typically applies to.

Commercial buildings are frequently deep-plan: offices, retail units and light industrial premises are designed around floor area and servicing, not around getting daylight to every corner. When you subdivide that floorplate into individual dwellings, rooms in the middle or rear of the building can end up with no external wall at all. Basement and semi-basement commercial units are a particularly common source of refusal, since below-ground habitable rooms are hardest to evidence against daylight standards. Our Class MA guide covers how to design around this in detail.

Noise is the second recurring issue, particularly for buildings above or near active commercial premises: restaurants, bars, gyms, and units on high streets with late-opening neighbours. Councils are increasingly alert to the "agent of change" principle, the idea that whoever introduces a new noise-sensitive use (here, housing) near an existing noise source bears responsibility for mitigating the conflict, not the other way round. In 2024, the High Court quashed a prior approval that Hackney Council had granted for a six-unit Class MA conversion (an earlier eight-unit version of the scheme had previously been refused), after finding the council's consultation on noise from a nearby venue had been legally flawed (R (Strongroom Ltd) v London Borough of Hackney [2024] EWHC 1221 (Admin)). That case concerned a grant being challenged by a third party, not a refusal, but it illustrates how closely noise evidence is now scrutinised wherever new housing sits near an existing commercial noise source.

Transport, contamination and flooding refusals do happen, but far less often, usually where a site has a specific known issue (a previous industrial use, a location in Flood Zone 3, a genuinely constrained access) rather than as a general risk across most applications. Contamination objections are typically procedural rather than substantive: the council is not satisfied that risk has been properly investigated, not that the site is definitely unsafe, so a Phase 1 desk study closes the gap in most cases. Flood risk objections follow a similar pattern in Flood Zone 2 and 3 locations, where a site-specific flood risk assessment with appropriate mitigation is usually enough to satisfy the council, rather than the site being excluded outright.

Option 1: Resubmit With Changes

For most refusals, this is the fastest and cheapest route back to a workable scheme. You submit a new prior approval application, redesigned to address the specific reasons given in the refusal notice.

There is no discounted or free resubmission fee for Class MA. A limited fee exemption for a second application did exist between 2021 and December 2023, but it was removed, and has not returned. A resubmission today costs the same as the original application: £260 per dwelling from 1 April 2026. The 56-day determination clock starts again from scratch.

Resubmission works well when the fix is a design, evidence or layout question rather than a physical constraint. If the honest answer is that no amount of internal reshuffling gets daylight into a windowless middle section of the building, resubmitting the same basic layout with better paperwork will not change the outcome. That is the point to consider Option 3 below.

Option 2: Appeal to the Planning Inspectorate

You have the right to appeal a Class MA refusal to the Planning Inspectorate, in the same way as an appeal against a refusal of planning permission under section 78 of the Town and Country Planning Act 1990. This route makes most sense where you believe the evidence you already submitted was correctly assessed, and you want the scheme approved broadly as designed, rather than redesigned.

Appeals against a refusal of prior approval are decided under the written representations procedure. There is no public hearing or inquiry: both sides (you and the council) submit written statements and evidence, and a planning inspector decides on the papers. This is generally quicker and cheaper than a hearing or inquiry, though the exact time to decision varies with the Inspectorate's current caseload; check the Planning Inspectorate's published guidance for the latest expected timescale before relying on a specific figure. There is no separate fee to lodge the appeal itself.

One important constraint works in your favour: the inspector is confined to the same nine prior approval matters the council was entitled to assess in the first place. They cannot introduce a new objection outside that list, and they cannot revisit the principle of residential use on the site. The appeal turns entirely on whether the council was right to conclude, on the evidence before it, that one of those matters was not satisfactorily addressed.

Appeals tend to work best where the original application already contained strong technical evidence (a daylight assessment, an acoustic report) that you believe the council misread or gave insufficient weight to. Where the original application was thin on evidence, addressing the gap through a fresh application is usually the more direct route, since an appeal is judged against what was in front of the council at the time of its decision, not a redesigned scheme.

Option 3: Apply for Full Planning Permission Instead

Class MA only permits building operations that are reasonably necessary for the conversion. It is not a route to extensions, new external openings, or significant structural change. If the reason your prior approval was refused genuinely needs physical work outside that scope, such as new windows or rooflights to fix a natural light problem, or structural alterations to resolve a fire safety issue, full planning permission is the route that allows it.

Full planning permission also gives the council a much wider basis to assess your scheme (design, layout, policy compliance, neighbour impact) which cuts both ways: more design freedom to solve the problem that sank your Class MA application, but a broader set of grounds on which the council could still object.

Full planning tends to beat Class MA after a refusal when the physical fix is outside Class MA's scope, or when the scheme is large enough that the affordable housing and Section 106 cost is outweighed by the extra value the design freedom unlocks. It is rarely worth it purely to avoid a natural light or noise objection that a redesigned resubmission could equally fix within Class MA's scope, since that route is faster and considerably cheaper.

On smaller schemes, the maths usually points back to Class MA. A handful of units rarely generates enough uplift in value to absorb an affordable housing requirement, a heritage statement, and a longer, less certain determination period, when the same fix could often be achieved through a resubmission at a fraction of the cost. On larger schemes, particularly where a whole building or several floors are involved, the calculation changes: the additional design freedom can unlock a materially better layout, and the affordable housing cost becomes one line in a much bigger appraisal rather than the deciding factor.

Option 4: Sell or Reassess

Not every refusal resolves neatly into a fix. If the building is genuinely light-constrained (a windowless basement, a very deep floorplate with limited external wall) and the physical works needed to solve it would require full planning permission with an uncertain outcome and significant added cost, it is worth stepping back before committing more time and fees to the same site.

Practical alternatives at this stage include: continuing the building in commercial use and revisiting conversion later if circumstances change (a new access point becomes available, an adjoining site is assembled, policy shifts); selling the building as-is to a buyer with a different strategy, larger site assembly, an alternative Class E use, or the risk appetite for a full planning application with design changes; or exploring whether a smaller, more conservative unit count within the parts of the building that do achieve adequate light is viable, even if it delivers fewer dwellings than originally planned.

Before committing to a resubmission, an appeal, or a full planning application, it is worth getting an honest, evidence-based read on which of the four options actually fits your site and your numbers, rather than defaulting to the fastest-sounding one.

Decision Framework: Which Option Fits Your Refusal

There is no single right answer; it depends on why you were refused, what the fix would actually involve, and how the numbers stack up. This is a starting point, not a substitute for reviewing your specific refusal notice.

Summary

A Class MA refusal is narrower than it feels. The council can only refuse on nine prescribed matters, natural light and noise account for most real-world refusals, and the permitted development right underneath your application is untouched by the decision.

For most schemes, resubmitting with a targeted fix, better daylight evidence, an acoustic mitigation scheme, a revised unit layout, is the fastest and cheapest way back to a workable conversion. Appeal to the Planning Inspectorate where you believe the council misjudged evidence you already submitted; it is decided by written representations within 6 months of lodging, not the shorter 12-week window that applies to householder cases. Move to full planning permission only where the genuine fix needs external works Class MA does not allow. And where none of that stacks up, it is a legitimate outcome to hold, sell, or reassess the site rather than force a scheme that the building cannot support.

The right first step after any refusal is reading the notice carefully against the nine matters above, so you know precisely which one, or ones, you are actually solving for.