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Conversions

Change of Use Planning

The legal process of converting a property from one planning category to another — the bridge between what a building was and what it could be. We design your conversion, guide it through planning, and build it.

When your designer is also your builder, there are no surprises — just a clear path from vision to reality.

98%
Planning Approval Rate
500+
Change of Use Projects Delivered
110+
Local Authorities Worked With

What is Change of Use?

Imagine you've found the perfect building — an old shop on a quiet street, a former office with character, or a warehouse with endless potential. You can see exactly what it could become: a beautiful home, stylish flats, or a thriving short-term let. Change of use is simply the legal process of converting a property from one planning category into another. It's the bridge between what a building was and what it could be.

UK mixed-use building with shops below and residential above
Use Classes

Understanding Use Classes

In England and Wales, properties are categorised into Use Classes defined by the Town and Country Planning (Use Classes) Order 1987 (as amended). Changing between certain classes requires planning permission, while others can happen under Permitted Development rights.

C3

Dwellinghouses

Standard residential homes for families or up to 6 people living as a household.

C4

HMOs

Houses in Multiple Occupation with 3-6 unrelated individuals sharing facilities.

Sui Generis

Large HMOs

HMOs with 7+ occupants require specific planning permission.

E

Commercial

Shops, restaurants, offices, gyms, health centres, nurseries.

F1

Learning & Non-Residential

Schools, museums, libraries, public halls, churches.

F2

Local Community

Small shops, community halls, outdoor recreation areas.

The Hosannahs Difference

Why Design & Build Improves Your Approval Chances

Most applicants hire a designer for drawings, then find a separate builder — and wonder why their application struggles. Our integrated approach achieves better results.

Professional Design Drawings

Clear, detailed plans that planning officers can assess with confidence.

Compliance Built In

Building regulations and planning requirements considered from the very first sketch.

Design & Build Continuity

The team that designs your conversion understands how it will be built — no disconnect.

98% Approval Rate

Our integrated approach consistently delivers successful planning outcomes.

Planning Routes

When Do You Need Planning Permission?

Not all changes of use require a full planning application. Some conversions are allowed under Permitted Development Rights. We assess your specific situation and advise on the fastest, most cost-effective route.

Often Permitted Development

  • Office (Class E) to residential (C3)
  • Retail (Class E) to residential (C3)
  • Light industrial to residential
  • Agricultural buildings to homes
  • Some C3 to C4 HMO conversions

Usually Needs Full Planning

  • Large HMOs (7+ occupants)
  • Residential to commercial
  • Listed buildings (any change)
  • Conservation area restrictions
  • Article 4 direction areas
Prior Approval

The Prior Approval Process

Even when a change qualifies as Permitted Development, you often need Prior Approval from your local planning authority. This lighter-touch process considers specific matters like:

Transport and highways impacts
Contamination and flooding risks
Noise from surrounding commercial uses
Natural light in proposed habitable rooms
Impact on the character of the area

This is where professional drawings matter most. Prior Approval applications are often rejected because the submitted plans don't adequately demonstrate natural light compliance or noise mitigation. Our detailed interior layouts, window schedules, and acoustic specifications give planning officers confidence.

Article 4 Directions

Many local authorities have introduced Article 4 Directions to remove Permitted Development rights in specific areas. This is common for HMO conversions in university towns or office-to-residential changes in commercial centres.

Always check with your local council before assuming PD rights apply — or better yet, let us check for you as part of our free consultation.

Protect capital
Avoid costly mistakes
Reduce planning risk
Save time
Identify opportunities
Increase property value
Generate stronger returns

Move your project forward with a team trusted with 500+ property projects across the UK.

Frequently Asked Questions

Common questions about change of use planning.

Change of use is the legal process of converting a property from one planning use class to another — for example, turning a shop (Class E) into a home (C3). Some changes are allowed under Permitted Development rights, while others require a full planning application.

No. Some changes between use classes are permitted development and don't need full planning permission, though you may still need Prior Approval for matters like transport, noise, and natural light. We assess your specific situation and advise on the fastest, most cost-effective route.

An Article 4 Direction removes Permitted Development rights in a specific area, meaning changes of use that would normally be allowed now require a full planning application. These are common in university towns for HMO conversions and in commercial centres for office-to-residential changes.

Prior Approval is a lighter-touch process used when a change of use qualifies as Permitted Development. The council assesses specific matters such as transport impact, contamination, flooding, noise, and natural light. Many Prior Approval applications are rejected because the submitted plans don't adequately demonstrate compliance — which is why professional drawings matter.

Yes. Office-to-residential and retail-to-residential conversions are among the most common projects we handle. We assess the building, explore the planning route (Permitted Development or full application), and prepare the drawings needed to create quality living spaces.

A full planning application typically takes 8-13 weeks for a decision. Prior Approval applications are usually faster, often 4-8 weeks. We'll advise on the expected timeline for your specific project during your free consultation.

Ready to Start Your Change of Use Project?

Book a free consultation to discuss your property. We'll assess the planning route, provide a cost estimate, and explain how our design & build approach can maximise your chances of approval.