Article 4 Directions and the Evidence Problem:

Can North East Lincolnshire Really Justify Restricting Permitted Development Rights for HMOs?

Recent discussions regarding a proposed Article 4 Direction affecting Houses in Multiple Occupation (HMOs) in Grimsby and Cleethorpes raise a number of important questions concerning evidence, proportionality, property rights, housing supply and long-term investment.

Article 4 Directions remove nationally granted permitted development rights that Parliament has deliberately conferred upon property owners. Such powers should therefore be exercised only where there is a clear, objective and compelling evidence base demonstrating that the restriction is both necessary and proportionate.

The burden of proof rests firmly upon the local authority.

The Evidence Gap

Under current legislation, mandatory HMO licensing generally applies only to larger HMOs occupied by five or more people forming two or more households.

Consequently, many smaller HMOs occupied by three or four unrelated individuals are not captured within the mandatory licensing system.

This creates an obvious evidential difficulty.

If there is no comprehensive register identifying every HMO within North East Lincolnshire, how can the authority accurately demonstrate:

• The true concentration of HMOs.
• Their geographical distribution.
• Whether concentrations exceed any meaningful threshold.
• Whether any alleged planning harm is genuinely attributable to HMOs.

Before restricting property rights, the authority should be able to answer several fundamental questions:

• How were HMOs identified?
• How many properties were physically inspected?
• What methodology was adopted?
• What assumptions were made?
• What confidence intervals or error rates exist?
• How many properties have been incorrectly classified?

Without clear answers, any numerical evidence should be treated with considerable caution.

East Marsh Requires Reliable Long-Term Evidence

Selective licensing has recently been introduced within East Marsh.

However, licensing schemes require sufficient time before meaningful conclusions can properly be drawn.

Reliable evidence should normally include long-term trends concerning:

• Property conditions.
• Tenant turnover.
• Environmental complaints.
• Enforcement outcomes.
• Anti-social behaviour reports.
• Neighbourhood stability.

Attempting to justify significant planning restrictions before sufficient evidence has accumulated risks replacing evidence-based planning with assumption-based planning.

Correlation Is Not Causation

Even if a concentration of HMOs could be demonstrated, that alone does not establish that HMOs cause planning harm.

East Marsh faces numerous longstanding challenges, including:

• Historic housing conditions.
• Economic deprivation.
• Population mobility.
• Crime.
• Vacant properties.
• Wider social issues.

The existence of HMOs alongside these issues does not demonstrate a causal relationship.

Planning policy should distinguish carefully between correlation and causation.

The authority should therefore demonstrate not merely that HMOs exist within an area where problems occur, but that those problems arise because of HMO use itself.

Alternative Explanations Must Be Properly Examined

Reports of anti-social behaviour should likewise be considered carefully.

Anti-social behaviour occurs within many forms of housing, including:

• Owner-occupied homes.
• Family houses.
• Social housing.
• Privately rented family accommodation.

Accordingly, anti-social behaviour cannot automatically be attributed to HMOs simply because HMOs exist within the same neighbourhood.

The authority should demonstrate through objective evidence that any alleged planning harm arises specifically from HMO use rather than from broader social or economic factors.

What Planning Harm Is Actually Being Alleged?

If HMOs are said to create planning harm, the authority should identify clearly:

• The precise nature of that harm.
• The evidence supporting the allegation.
• The methodology employed.
• The statistical basis relied upon.
• The individual properties considered.

General references to community balance or neighbourhood character should be supported by objective, independently verifiable evidence.

Assertions alone should not justify the removal of nationally granted planning rights.

The Wider Economic Consequences

An Article 4 Direction does not merely affect landlords.

It affects future investment decisions.

Areas such as East Marsh have historically required significant private investment to improve ageing housing stock, regenerate neighbourhoods and increase housing quality.

The public sector alone cannot realistically provide the level of investment required.

Private investment therefore plays a central role in regeneration.

Many refurbishment projects become financially viable because permitted development rights allow suitable properties to be converted into smaller HMOs without requiring planning permission.

Removing those rights introduces:

• Planning uncertainty.
• Increased costs.
• Additional delays.
• The possibility of refusal.

Investment follows certainty.

Where uncertainty increases, investment frequently moves elsewhere.

Rather than encouraging regeneration, an Article 4 Direction may discourage precisely the private capital that many regeneration areas depend upon.

Before introducing such restrictions, the authority should demonstrate that it has carefully considered these wider economic consequences.

Housing Supply and Affordable Accommodation

HMOs provide an important source of relatively affordable housing.

They accommodate:

• Young professionals.
• Workers relocating for employment.
• Individuals leaving the family home.
• People saving for home ownership.
• Those unable immediately to access owner occupation.

Restricting future HMO creation inevitably restricts future housing supply.

Basic economic principles suggest that reducing supply may increase pressure on rents while reducing housing choice.

This consideration is particularly important given the Government’s broader objective of increasing housing supply and improving access to affordable homes.

Policies that reduce one form of affordable accommodation should therefore be supported by compelling evidence demonstrating that the planning benefits clearly outweigh the likely reduction in housing availability.

The authority should explain why restricting affordable accommodation is justified when national housing policy generally seeks to increase housing supply rather than reduce it.

Measuring Success Requires a Reliable Baseline

An additional difficulty arises after implementation.

If the authority cannot accurately identify existing HMOs before introducing Article 4 restrictions, how can it later demonstrate that the policy has succeeded?

Effective public policy requires measurable outcomes.

This requires a reliable baseline.

Without accurate baseline information, fundamental questions become difficult to answer:

• Has the number of HMOs fallen?
• Has anti-social behaviour reduced?
• Have complaints decreased?
• Has neighbourhood stability improved?
• Have housing standards improved?
• Have property values changed?

Where the baseline itself is uncertain, future claims regarding success or failure inevitably become equally uncertain.

Transparency and Public Scrutiny

The consultation process should permit genuine scrutiny.

Property owners, landlords and residents should have access to:

• The evidence relied upon.
• The methodology used.
• The underlying datasets.
• Statistical assumptions.
• Alternative explanations considered by the authority.

Good public administration requires that evidence be capable of independent examination.

Planning policy should not depend upon evidence that cannot withstand scrutiny.

The Right to Challenge the Evidence

Affected property owners should be entitled to ask:

• Where did the data originate?
• How was it verified?
• What assumptions were made?
• What contrary evidence exists?
• Why were alternative explanations rejected?

Evidence capable of supporting significant restrictions on property rights should equally be capable of surviving detailed independent challenge.

Oversight Beyond the Local Authority

Article 4 Directions are not beyond scrutiny simply because they are proposed by a local authority.

The statutory framework provides mechanisms through which proposed Directions may be examined beyond the council itself.

The Secretary of State possesses powers relating to Article 4 Directions, including the ability, in appropriate circumstances, to modify or cancel a Direction where legal requirements or national planning policy have not been properly satisfied.

Accordingly, concerns regarding:

• The adequacy of the evidence.
• The proportionality of the restriction.
• Compliance with national planning policy.
• Procedural fairness.

may properly be raised during consultation and, where appropriate, through representations to the Secretary of State.

This provides an important constitutional safeguard ensuring that significant restrictions upon property rights remain subject to independent oversight.

The Stronger the Restriction, the Stronger the Evidence Must Be

Article 4 Directions are not minor administrative measures.

They remove nationally granted planning freedoms.

They affect investment.

They influence housing supply.

They potentially reduce property values.

They interfere with long-established expectations concerning the lawful use of private property.

Accordingly, the evidential burden should be correspondingly high.

General concerns, anecdotal complaints or broad assumptions should never be sufficient to justify restrictions of this magnitude.

The more significant the interference with private property rights, the stronger the evidence must be.

Less Restrictive Alternatives

Before removing nationally granted permitted development rights, the authority should demonstrate that less restrictive measures have been properly considered.

Such alternatives may include:

• Existing planning enforcement powers.
• Housing Act enforcement.
• Environmental Health powers.
• Targeted action against individual nuisance properties.
• Licensing schemes.
• Anti-social behaviour legislation.

If existing statutory powers are capable of addressing identified concerns, it becomes increasingly difficult to justify introducing a blanket planning restriction affecting every future property owner within an area.

Restrictions upon property rights should represent the last resort rather than the first response.

Conclusión

Article 4 Directions represent one of the most significant restrictions that can be imposed upon ordinary residential property owners without changing primary legislation.

They remove planning freedoms that Parliament has deliberately granted.

They influence investment.

They affect housing supply.

They may alter property values.

They change the future development potential of entire neighbourhoods.

For those reasons, they should only be introduced where the supporting evidence is robust, transparent, independently verifiable and capable of withstanding detailed public scrutiny.

The authority should demonstrate not only that HMOs exist, but that they cause identifiable planning harm, that alternative explanations have been properly examined, that reliable baseline data exists, that future success can be objectively measured, and that the proposed restriction is both necessary and proportionate.

Before removing nationally granted permitted development rights, the authority should also demonstrate that the proposed restriction represents the least intrusive means of addressing the alleged problem. Where existing planning powers, housing legislation, licensing regimes or targeted enforcement against individual nuisance properties are capable of addressing identified concerns, the proportionality of imposing a blanket Article 4 Direction becomes increasingly difficult to justify.

Ultimately, restrictions on private property rights should not be founded upon estimates, assumptions or general perceptions. They should be founded upon compelling evidence, objective analysis and demonstrable necessity. In a democratic society governed by the rule of law, planning restrictions should remain the exception rather than the norm, ensuring that any interference with private property rights is justified by clear evidence, proportionate to the problem identified, transparent in its reasoning and capable of withstanding independent scrutiny by the public, the courts and the Secretary of State.