Shop to dental practice within Class E: what needed permission

Turning a vacant shop into a dental practice usually needs no planning permission for the change of use itself, because both uses sit inside Class E of the Use Classes Order. What does need permission is almost everything else: the plant on the rear wall, the altered shopfront, the signage and sometimes the bin enclosure. This dental practice change of use example is illustrative, drawn from the pattern these projects follow rather than from any one real application, and it shows where the applications actually land.

The unit in the example is a mid-terrace former card shop on a secondary high street, 95 m² at ground floor with a small rear yard, in a parade with flats above. No listed building, no conservation area, no Article 4 direction.

Why the change of use needed no permission

Section 55(2)(f) of the Town and Country Planning Act 1990 says that a change of use within the same use class is not development. The Use Classes Order 1987, as amended in September 2020, puts retail at Class E(a) and medical or health services at Class E(e). A dental surgery is a health service use, so moving from one to the other is not a change requiring permission.

Three checks still have to be done before relying on that, and skipping them is how people end up with an enforcement notice.

• Look for a condition on the original permission tying the unit to a specific use. A 1990s permission for a shop may carry a condition restricting occupation to Class A1 as it then was, and that condition survives the 2020 reclassification.
• Check for an Article 4 direction. Councils can and do remove rights, and some town centre directions bite on movements within Class E.
• Confirm there is no earlier planning history limiting hours, servicing or floor area.

Where the position is unclear on the papers, a Lawful Development Certificate under section 192 of the 1990 Act is the only formal way to confirm that a proposed use is lawful. On this unit the original permission was unconditional as to use, so no application was made for the use.

The works that did need an application

The practice needed four physical changes: an air source heat pump and ventilation condenser in the rear yard, a replacement shopfront with a level threshold, a new extract terminal at first floor level on the rear elevation, and an enclosed waste store.

Two applications went in. A full planning application covered the external alterations and plant, and a separate advertisement consent application covered the fascia and projecting sign under the advertisement regulations. Keeping signage separate is a small discipline that pays off, because an advertisement refusal then does not take the shopfront with it.

The supporting pack was short. A Planning Statement setting out the lawful use position and the policy case for a health use in a secondary parade, a plant noise assessment, elevations at 1:50 and a waste and servicing note. Nothing else was asked for.

Plant on the rear elevation and the noise case

Flats above and behind made plant noise the one issue capable of refusing the application. The assessment followed BS 4142:2014+A1:2019, measuring the existing background sound level at the nearest residential window during the quietest period the plant would run, then comparing the rating level of the proposed plant against it.

The first iteration failed. The condenser as specified sat above background at night, and the acoustician's answer was the usual one: move it, box it, or choose a quieter unit. The design moved the condenser from the yard wall shared with the flats to the opposite return, added an acoustic enclosure with a lined plenum, and capped operating hours at the practice's opening times.

A Noise Impact Assessment that shows the measured background level, the manufacturer's sound power data and the calculated rating level at the nearest receptor is the document that settles this. One that asserts the plant "will not cause harm" without numbers gets a holding objection from environmental health, and that costs four weeks. A nearby case where a commercial extraction system drew an odour objection shows the same dynamic playing out on a different pollutant.

Accessibility and the entrance threshold

The existing shopfront had a 140 mm step. Dropping the internal floor was not possible because of the drainage run, so the design raised the external pavement level within the property boundary to form a level threshold, with the door reversed to open inwards.

Accessibility sits in two places at once. Approved Document M of the Building Regulations governs the technical standard and is dealt with through building control. Planning looks at the appearance of the alteration and at whether the works encroach on the public highway, which they did not here. Where a ramp or platform lift is proposed, check whether a permitted development right covers it before assuming one does, because the answer depends on the building and on what is being altered.

Clinical waste storage

Clinical waste is controlled waste, and the duty of care under Part II of the Environmental Protection Act 1990 applies to its storage and transfer. Planning does not regulate the waste stream. It regulates where the store goes, what it looks like and whether refuse vehicles can reach it.

The yard was 3.2 m deep, which left room for a brick-faced enclosure with a timber gate holding the clinical waste bins, the amalgam waste container and general refuse separately. The application described collection frequency and the licensed carrier arrangement in a short Waste Management Strategy, which is the sort of detail that stops a case officer imposing a condition requiring details to be submitted later.

Two consents sit outside planning entirely and are easy to forget in the programme. Registration with the Care Quality Commission is needed before the practice can treat patients. Radiation protection arrangements under the Ionising Radiations Regulations 2017 apply to the dental x-ray equipment. Neither affects the planning decision, and both affect the opening date.

Parking and the highway response

A health use generates more visitor trips than a card shop, and the highway authority asked about it. The parade had no off-street parking, so the response relied on the existing position: no parking was being removed, the unit sits on a bus route, and controlled parking already manages kerbside turnover.

No transport work was commissioned. For a unit this size that is usually the right call, and the test worth applying is whether the trip generation changes materially from the lawful use. Where it does, a short Transport Statement costs less than an objection. The highway authority raised no objection subject to a cycle parking condition.

What the consents took in time

The planning application was validated 11 working days after submission, following one request for a revised site plan. It was determined under delegated powers inside the eight week statutory period for a minor application. The advertisement consent ran in parallel and was decided slightly earlier.

The fit-out was the longer pole. Building control approval, the CQC registration process and the plant lead time together set the opening date, and the planning permission was in hand before the first of them completed. That ordering is the useful lesson from this kind of scheme: the planning risk sits in the plant noise case, and the programme risk sits everywhere else.

If you are working through the same sequence, you can see which report types a change of use like this is likely to need and draft the Planning Statement and noise scoping from your own site details.

This is general guidance, not legal advice. Use class positions turn on the planning history of the specific unit, so check 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.