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HMO Planning Refusals Double: Impact on the Mortgage Market

HMO planning refusals have doubled since 2021, impacting landlords and the mortgage market significantly.

By David Sampson
26 August 2026
3 min read
UK hmo mortgage article image for HMO Planning Refusals Double Impact on the Mortgage Market

TL;DR

  • HMO application refusals surged from 590 in 2021 to 1,203 in 2025.
  • this trend affects landlords and investors seeking to navigate a tightening regulatory environment.

Written by David Sampson for Mortgage118. Last updated 26 August 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

Recent research indicates that planning refusals for houses in multiple occupation (HMOs) have more than doubled since 2021. This trend, highlighted by property firm 1st Avenue, suggests significant implications for the mortgage market as landlords face increasing hurdles in securing planning permissions for HMOs.

Why Are HMO Refusals Increasing?

Analysis of 144 English councils reveals a dramatic rise in planning refusals for HMOs, with the total number of decided applications increasing by 87%, from 1,848 to 3,454 during the same period. This surge coincides with a growing number of councils implementing Article 4 directions, which remove permitted development rights for converting family homes into small HMOs. As a result, landlords are now more frequently required to seek planning permission, complicating the process of expanding their rental portfolios.

What Are Article 4 Directions?

Article 4 directions allow local authorities to restrict certain types of development without needing full planning permission. While there is no central register of these directions, estimates suggest that between 75 and 80 English local authorities have adopted them. This shift highlights a growing trend among councils to manage housing supply and maintain community standards, which could further limit the availability of regulated rental properties.

Impact on the Mortgage Market and Landlords

The tightening of planning permissions for HMOs poses challenges for landlords and property investors. As legal options for creating shared housing diminish, there is a risk that tenants may turn to informal or unregulated accommodation. This shift could lead to increased demand for affordable housing options, but it also raises concerns about tenant safety and the quality of living conditions. Landlords should remain vigilant and adapt their strategies to navigate these regulatory changes effectively.

Frequently Asked Questions

How do planning refusals affect my investment strategy?

Planning refusals can limit your ability to expand your rental portfolio, particularly in areas where HMOs are in high demand. Understanding local regulations is important for making informed investment decisions.

What should I watch for in the mortgage market?

Keep an eye on changes in local planning policies and Article 4 directions, as these can significantly impact your ability to secure financing for HMO properties.

About David Sampson

David Sampson writes about the UK mortgage market for Mortgage118, covering specialist lending, market trends, and practical advice for borrowers. All content is reviewed for accuracy against FCA guidelines and current market data.

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