Office loss and Article 4 directions in the central zone

If your building sits in the Central Activities Zone or one of the defined office areas in a London borough, the prior approval route from commercial to residential use has in all likelihood been removed. Article 4 office to residential london directions were made by boroughs across central London and parts of the inner boroughs to withdraw the permitted development right, which means a full planning application is the only route and the borough's office protection policies apply to it.

Our overview of Article 4 directions and office to residential conversion covers the policy background. This note is about working out whether a specific building is caught and what the remaining application route looks like.

Why the directions were made

The commercial to residential prior approval route, Class MA of Schedule 2 Part 3 to the Town and Country Planning (General Permitted Development) (England) Order 2015, allows buildings in the commercial, business and service use class to change to dwellinghouses subject to conditions and limits, with the authority able to consider only a prescribed list of matters.

In central London that route sat badly with a planning strategy built around protecting office capacity in the places where office demand is concentrated. Boroughs responded with Article 4 directions under Article 4 of the Order, withdrawing the right in defined areas so that conversion proposals are assessed against the development plan in the ordinary way.

National policy expects directions of this kind to be applied to the smallest geographical area possible and used where necessary to avoid wholly unacceptable adverse impacts. That is why most directions are drawn around a zone or a cluster of streets rather than across a whole borough.

Which areas they cover

In broad terms, the Central Activities Zone, the northern part of the Isle of Dogs, town centres and defined office or employment clusters identified in borough local plans. Beyond those areas the prior approval route may still be available.

The boundaries are specific, and they are not intuitive. A street can be inside a direction on one side and outside on the other. Mixed-use blocks straddle boundaries. And some boroughs have made more than one direction over the years, covering different rights, in overlapping areas.

What the directions actually remove

Read the direction itself. Most withdraw the commercial to residential right, and many also withdraw other rights, including earlier office to residential provisions and in some cases demolition or other Part 3 changes.

A direction removes a permitted development right. It does not prohibit the development, and it does not create a presumption against it. What it does is move the decision from a prior approval process, where the authority considers a limited list of matters, to a full planning application where the whole development plan is in play. That is a substantial change in the nature of the assessment, and it is the point of the direction.

Note: a direction cannot apply to a right that never existed for your building. A listed building, or a building whose last use was not within the commercial, business and service class, was outside the prior approval route anyway.

Checking whether your building is affected

Five checks, in order, before you spend money on drawings.

1. Confirm the lawful use of the building, by reference to planning history and, if needed, a certificate of lawfulness.
2. Check whether the building lies within an Article 4 direction area, using the borough's map and the national planning data service.
3. Read the direction and identify the rights withdrawn and the date it took effect.
4. Check the local plan designations: office protection policy, town centre boundary, employment cluster, conservation area.
5. Check the building's own constraints: listing, curtilage listing, and any condition on an earlier permission removing rights.

Step one is the one people skip. Where a building has been in a mix of uses, or vacant for years, the lawful use may not be what the marketing particulars say, and the whole analysis depends on it.

The application route that remains

A full planning application for change of use, assessed against the development plan. Expect the borough to test the proposal against its office protection policy, its housing policies including any affordable housing requirement, and its design and amenity standards, which the prior approval route largely bypassed.

That has practical consequences for the scheme. Space standards apply, so unit sizes and layouts that would have passed under prior approval may not work. Daylight and sunlight to the new units is assessed, and in a dense central block it is often the binding constraint, as our note on daylight guidance in dense London sets out. Affordable housing policy applies, which on a scheme above the relevant threshold changes the appraisal entirely. And a Fire Statement may be required at Planning Gateway One for a relevant building, prepared by someone with the necessary fire engineering competence.

Evidence on continued office demand

The office protection policy is the heart of the case, and the evidence that answers it is marketing evidence plus a market assessment.

A borough normally expects four things. A marketing campaign over a sustained period, commonly a year or more, through agents, at a rent and on terms that a reasonable office occupier would consider. Records of enquiries, viewings and offers. A statement on the building's suitability for continued office use, covering floorplate, servicing, accessibility and the cost of refurbishment to a lettable standard. And evidence on local office supply and demand.

The arguments that fail are the ones with no marketing at all, marketing at an unrealistic rent, marketing for three months, or an assertion that the building is obsolete without a refurbishment cost comparison. The arguments that succeed usually show that the building cannot be made lettable at a cost the market will support, with figures.

Where a conversion case can still succeed

Three situations are worth pursuing even inside a direction area. A building on the edge of an office cluster, poorly configured for office use, with sustained marketing evidence behind it. A building where the local plan itself contemplates mixed use or residential as part of an allocation. And a scheme that retains office floorspace at ground and lower floors while converting upper floors, which answers the policy objection rather than confronting it.

The last of those is usually the strongest. A borough defending its office stock finds it much harder to refuse a scheme that keeps workspace in the building than one that removes it, and where the borough also seeks affordable workspace, that element can be built into the same proposal. Approaches of that kind also sit more comfortably alongside the wider strategic designations discussed in our note on opportunity areas.

To see which supporting documents a conversion application is likely to need, enter the postcode on PlanScope and work through the guided questions.

PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. This is general guidance, not legal advice; check the position with the borough or a qualified professional before relying on it.