Cedar Planning provides specialist planning advice for landlords, developers and investors creating or regularising Houses in Multiple Occupation across England. From Article 4 areas and Certificates of Lawful Development to full planning applications for large sui generis HMOs, we identify the correct route and build the planning case around it.
HMO planning in England operates through the planning Use Classes system. The correct route depends on the existing lawful use of the property, the number of occupants proposed and whether local permitted development rights have been removed.
A change from a dwellinghouse in Use Class C3 to a small HMO in Use Class C4 can benefit from permitted development rights in many locations. However, an Article 4 Direction can remove that right, meaning a planning application is required.
Large HMOs accommodating seven or more unrelated occupants generally fall outside Class C4 and are treated as sui generis. These proposals require a full planning assessment and can raise additional issues relating to amenity, parking, waste, management and the concentration of HMOs.
Cedar Planning assesses the planning position before recommending a route, helping you avoid unnecessary applications while ensuring that the use is properly documented where formal confirmation is needed.
A conventional dwelling occupied by a single household.
Occupation by three to six unrelated people who share basic amenities.
HMOs accommodating seven or more unrelated occupants generally fall outside Class C4.
Article 4 Directions, planning conditions, existing lawful use and local policy can all affect the correct route. We check the property and local planning framework before advising.
The right route depends on the number of occupants, Article 4 status, existing lawful use and any relevant planning restrictions. These are the three routes we most commonly advise on.
Often relevant to: small HMOs where the C3 to C4 change benefits from permitted development rights, or existing HMO uses where lawfulness needs to be formally established.
A lawful development certificate can provide formal confirmation of the planning status of the use, supported by the appropriate planning and factual evidence.
View Lawful Development Certificate serviceOften relevant to: C3 to C4 changes where an Article 4 Direction has removed the usual permitted development right.
The application may need to address local HMO concentration policies, residential amenity, parking, waste, cycle storage, management and other authority-specific requirements.
Read our HMO Article 4 guideOften relevant to: HMOs accommodating seven or more unrelated occupants.
These proposals require a full planning assessment and commonly need a detailed Planning Statement addressing the development plan, amenity standards and operational impacts.
View Planning Application servicesSend us the property address, current use and proposed number of occupants. We can review the likely planning route before you commit to an application or purchase.
An Article 4 Direction allows a local planning authority to remove specified permitted development rights within a defined area. For HMO proposals, this can remove the usual permitted development route from Class C3 to Class C4.
Where the relevant right has been removed, a small HMO can require full planning permission. The proposal is then assessed against local HMO policies and other development plan considerations rather than simply relying on the national permitted development position.
The local assessment can include HMO concentration, the effect on the balance of the neighbourhood, residential amenity, parking, waste, cycle storage and the standard of accommodation. The precise policy tests vary between authorities.
Cedar Planning provides HMO planning support for landlords, investors and developers across England. You can instruct us for a single document or for end-to-end planning support.
Planning advice led by a Chartered Town Planner with experience across residential, HMO, lawful use and appeal work.
We assess the planning position before recommending an application, helping you avoid weak or unnecessary routes.
Every project is scoped and quoted clearly before instruction so you know what is included.
We understand the commercial cost of delay and can prioritise urgent HMO planning work subject to availability.
Experience across a wide range of Local Planning Authorities means we understand how HMO policy differs between councils.
Where instructed, we can manage the planning process from the initial review through submission, officer liaison and decision.
These pages explain the main planning routes in more detail and help you understand which service is likely to be relevant.
Understand how Article 4 can remove the C3 to C4 permitted development route and when planning permission is required.
Read the guide Lawful UseFind out how a certificate can formally confirm an existing or proposed use where the planning evidence supports lawfulness.
View the service Refused?If an HMO application has been refused, we can review the decision and advise whether an appeal is a realistic next step.
View appeal supportSend us the property address, current use, proposed number of occupants and any planning history you already have. We can review the likely route and provide a clear fixed-fee quotation for the work required.
Tell us about your project and we'll come back to you within 1 working day with honest, practical advice.
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