Shop to flat: Class MA or a full application

A shop to flat change of use can go through Class MA prior approval or a full planning application, and the choice usually comes down to three things: whether the unit has been in Class E use for two years and empty for three months, whether the building is listed or on designated land, and whether you need any external alterations. Class MA grants the change of use only. If the scheme needs a new window, a replaced shopfront or a bin store built against the side wall, prior approval will not cover it.

Prior approval is faster and harder for a council to refuse. A full application is slower, costs more, and gives you room to argue about frontage policy and about a layout that prior approval would not permit.

When Class MA is available for a shop

Class MA in Part 3 of Schedule 2 to the Town and Country Planning (General Permitted Development) (England) Order 2015 permits a change of use from Class E, the commercial, business and service class, to Class C3 dwellinghouses. A conventional retail shop sits in Class E, so the class is available in principle.

The gateway conditions do the real work:

• The building must have been in a use falling within Class E for a continuous period of at least two years before the date of the prior approval application.
• It must have been vacant for a continuous period of at least three months immediately before that date.
• The cumulative floorspace changing use must not exceed 1,500 m².
• The building must not be listed, within the curtilage of a listed building, a scheduled monument, or on designated land such as a National Landscape, a National Park, a site of special scientific interest or a World Heritage Site.
• No Article 4 direction may have removed the right in that area.

The prior approval application then puts a defined list of matters before the authority: transport impacts and safe access, contamination, flood risk, noise from neighbouring commercial premises affecting the future residents, the provision of adequate natural light in all habitable rooms, and, where the building is on the ground floor in a conservation area, the effect of losing that ground floor use. A condition also requires the new dwellings to comply with the nationally described space standard.

Why some shops fall outside it

The three-month vacancy requirement catches more schemes than anything else. A landlord with a sitting tenant on a rolling arrangement cannot use Class MA without an empty unit and the rent loss that goes with it, and evidence of vacancy has to be documentary rather than asserted.

Use class is the second trap. A hot food takeaway, a betting shop, a payday loan shop and a drinking establishment are all sui generis rather than Class E, so none of them can use Class MA whatever their frontage looks like. A unit that drifted from retail into one of those uses years ago may not have been in Class E use for the required two years, and the classification arguments around that are the subject of our note on taxi and private hire offices and the classification problem. Where a shop has been used for hairdressing, beauty treatment or dry cleaning, it stays within Class E, as covered in personal service uses in Class E(c)(iii).

Listing is the third. A large share of traditional high street frontage is listed or sits within a listed building's curtilage, which removes Class MA outright and also means listed building consent for internal alterations.

Only a Lawful Development Certificate under section 191 or 192 of the Town and Country Planning Act 1990 formally establishes that a use or operation is lawful. Where the prior use is unclear, applying for one first usually costs less than arguing about it after a refusal.

What a full application allows that prior approval does not

Prior approval covers the change of use and nothing else. That single sentence explains most of the schemes that start down the Class MA route and end up submitting a full application anyway.

The other advantage of a full application is control over layout. Class MA brings the space standard with it as a condition, and a narrow deep shop unit with one window at the front frequently cannot produce a compliant flat without external works that prior approval cannot authorise.

Daylight, noise and amenity evidence

Natural light to habitable rooms is the matter that defeats the most shop conversions, because deep retail units were never designed for it. Rear rooms, basements and anything lit only by a rooflight over a light well need real evidence rather than a statement that light will be adequate.

What tends to persuade an officer is a room-by-room schedule with window areas, room depths and glazing ratios, supported by modelling where the geometry is marginal. The approach is the same as for a Daylight and Sunlight Assessment on a larger scheme, scaled to a single unit.

Noise is the second recurring matter. Where the shop adjoins a pub, a takeaway with extraction plant or a unit with refrigeration condensers, the assessment has to consider what the future residents will hear rather than what the current tenant tolerates. Plant noise at night is the usual problem, and a glazing and ventilation specification is the usual answer.

Contamination and flood risk are narrower. Contamination matters where the unit was a dry cleaner, a vehicle repair workshop or a filling station shop, and flood risk matters where the ground floor sits in Flood Zone 2 or 3, which on many high streets it does.

Frontage and shopfront policies

Local plans in most towns protect primary shopping frontages, and some designate secondary frontages with a permitted percentage of non-retail uses. Those policies cannot prevent a Class MA prior approval, because the matters for consideration are fixed by the Order. They apply in full to a planning application.

That asymmetry is the main reason landlords prefer prior approval in a protected frontage. It is also why a number of authorities have made Article 4 directions removing Class MA in defined town centre areas, which pushes the scheme straight back into a full application where the frontage policy bites.

Check the Article 4 position on the authority's own policies map before anything else. The direction may cover only part of a town centre, and a unit 50 metres outside the boundary may have a route its neighbour does not.

Parking, cycle storage and bins

Residential parking standards apply differently from retail standards, and a town centre shop with no parking becomes a flat with no parking. In an accessible location that is usually acceptable, and a car-free condition or a controlled parking zone exclusion is the common resolution.

Cycle storage and bin storage are the practical sticking points. Both need a location at ground floor that is accessible, secure and not in the shopfront, and both frequently need a small external structure that prior approval cannot authorise. Work out where they go before choosing the route, because this is where a prior approval scheme most often collapses into a full application.

Costs and timescales compared

Prior approval is determined within 56 days, and if the authority fails to determine it in time the development may proceed, subject to the conditions in the Order. A full application for a change of use to one or more flats runs to the standard eight-week period for minor development, with fees set by the national fee regulations and indexed annually, so check the current schedule.

Speed is only part of the comparison. A prior approval refusal can be appealed, but the appeal is confined to the stated matters, so there is nothing to argue about frontage policy or design quality. A full application refusal gives you a merits appeal on the whole case.

One further point that catches investors: a change of use creating dwellings under permitted development can still be chargeable for the Community Infrastructure Levy, which requires a notice of chargeable development to be served before commencement. The three-month vacancy needed for Class MA does not by itself remove the deduction for an in-use building, but the timing is worth checking against the charging authority's own position.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. A Planning Statement setting out the route you have chosen and why is worth submitting with either application, and you can enter your postcode on PlanScope to see which supporting reports the unit is likely to need.

PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.