The Ipswich HMO appeal at 131 and 133 St Helens Street has allowed the conversion of two vacant Class E units into a 16-bedroom, 16-person sui generis HMO.
The site lies within Ipswich’s HMO Article 4 area, but that Direction was not a blanket prohibition on HMOs. It removes the Class L permitted development right for changes from C3 dwellinghouses to C4 small HMOs. A 16-person HMO is outside Class C4 and required express planning permission in any event.
The appeal, reference 6012437, was allowed on 18th September 2026. Appeal decision
What the Ipswich Article 4 Direction actually removes
Ipswich Borough Council’s confirmed Direction came into force on 1st June 2024 in defined parts of 12 wards. It removes permitted development rights for material changes of use from C3 dwellinghouses to C4 small HMOs under Part 3 Class L. Ipswich Borough Council Article 4 information
The appeal proposal was different. Sixteen residents would take the use beyond C4 and into sui generis territory. The Inspector, Terrence Kemmann-Lane, noted that the proposal was not within the C3-to-C4 class affected by the Direction. He nevertheless regarded the Direction as evidence that the Council had identified HMO concentration as an issue needing planning control.
That is the correct distinction. An Article 4 Direction can withdraw a specified permitted development right. It does not rewrite the Use Classes Order and does not itself create a policy ban on another form of development.
Policy DM20 turned on the wording ‘properties’
The appeal then had to be assessed against the development plan, including Ipswich Local Plan Policy DM20. That policy supports HMOs where they meet its criteria and includes concentration tests intended to avoid harmful clustering.
One test prevents more than two HMOs within a run of 20 properties on one side of a road. The Council’s officer calculation started at 131 and 133 St Helens Street and extended eastwards to 5 Spring Road. It treated 20 plots as the relevant run, even though those plots contained 44 separate addresses.
The Inspector considered the policy’s use of the word properties important. On an address-based reading, there were no other identified HMOs within the relevant 20 properties running either east or west from the appeal site.
The committee had also referred to HMOs on the opposite side of St Helens Street. The Inspector found that inappropriate for this particular DM20 test because the policy expressly refers to properties on one side of the road.
Concentration was not shown to cause unacceptable harm
The Inspector also considered what could actually be seen and experienced on site. The proposed works would improve the appearance of the vacant commercial units and he found no unacceptable effect on the character and appearance of the St Helen’s Conservation Area.
Other concerns about parking, pedestrian safety, waste and noise were not supported by evidence demonstrating unacceptable effects. He concluded that the proposal would not create an over-concentration of HMOs or conflict with Policy DM20.
The appeal was therefore allowed subject to conditions.
What the Ipswich HMO appeal says about Article 4
Planning Geek’s reading is that the decision is useful for two separate reasons.
First, it reinforces the need to read the sealed Article 4 Direction rather than treating the words “Article 4 area” as shorthand for an HMO ban. The Ipswich Direction removes the C3-to-C4 Class L right. A large sui generis HMO requires express permission irrespective of that Direction.
Second, policy concentration calculations must follow the language actually adopted. A council may have good reasons to control HMO concentration, but a decision-maker cannot quietly substitute plots for properties or both sides of a road for a test written around one side.
Our guide to Class C4 HMOs and Article 4 Directions explains the distinction between small C4 HMOs, larger sui generis HMOs and withdrawn permitted development rights.
The reverse warning matters too: the absence of an Article 4 Direction does not make every HMO conversion permitted development. The existing and proposed use, number and nature of occupiers, any planning conditions and the exact GPDO limitations still need to be checked.
Report published: 19th September 2026
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