We warned investors about this years ago

For years, we have warned investors about this exact risk. When too many people chase the same HMO hotspot, the market suffers. Competition rises. Yields tighten. Councils step in. Those who listened avoided Warrington. Those who ignored the warning signs are now starting to feel the consequences.

Warrington has become a clear warning sign

Warrington now shows exactly what happens when HMO growth runs too far. Warrington Borough Council has already proposed an Article 4 Direction for six central wards: Orford, Poplars and Hulme, Fairfield and Howley, Latchford East, Latchford West, and Bewsey and Whitecross. The council says these wards already hold the highest concentration of HMOs. Its consultation page states that, if confirmed, the direction will come into force on 25 September 2026. The council has also announced plans to strengthen controls across the rest of the borough.

That alone should tell investors a lot. Councils do not move in this direction without reason. They act when concentration grows too high and local pressure builds.

Oversaturation damages a market step by step

Oversaturation does not hit all at once. It builds over time.

Developers spot a popular area and pile in. Sourcing firms then push the same location harder. Social media fills with claims about the next big HMO hotspot. More investors enter the market. Soon, everyone competes for the same tenants with similar stock.

At that point, the numbers start to weaken. Landlords fight harder for tenants. Rents stop growing. Incentives increase. Voids matter more. Margins shrink. The HMO model itself has not failed. The real issue is too much supply in one place.

That is what Warrington now reflects.

Article 4 does not remove the pressure, it moves it

This is the part many investors miss.

Once Article 4 arrives in the obvious HMO areas, developers and landlords do not simply stop. They look for the next nearby non Article 4 area instead. That shift then creates the same problem again. More developers enter. More HMOs appear. Competition rises. Yields come under pressure. Residents object. Councils respond.

Warrington Borough Council has already shown it understands that risk. Its wider push for borough-wide control suggests it wants to stop HMO growth from simply moving from one cluster of streets to another. That matters because it shows the issue goes beyond a few isolated wards.

Other major cities face the same problem

Warrington is not alone.

Manchester already uses Article 4 controls for small HMOs. Liverpool has planning controls in place for HMO changes of use within its Article 4 area. Leeds has also acknowledged that high HMO concentrations can harm communities, and it uses Article 4 in key areas. Newcastle has multiple Article 4 Directions covering HMO use as well.

The pattern is easy to spot. Developers flock to the same cities. Competition intensifies. Councils tighten planning rules. Investors arrive late and wonder why the returns no longer look attractive.

Manchester, Liverpool, Leeds, and Newcastle all face this same broader issue. Too many developers have headed there. They have created HMO saturation and fierce competition. That pressure has hurt yields and helped drive Article 4 introductions.

Popular does not mean profitable

This is where many investors go wrong. They assume that a heavily marketed city must offer strong opportunity. In reality, the opposite is often true.

When every developer, sourcing company, and property educator pushes the same area, the easy upside has usually gone. Late investors then enter a crowded market. They pay more. They compete harder. They face tighter margins. They also face greater planning risk.

That is not smart investing. That is following the herd.

HMOs still work, but oversaturated areas do not

None of this means HMOs are dead. Far from it.

HMOs still work very well in the right locations. Investors just need to focus on genuine demand, sensible purchase prices, manageable competition, and local planning conditions. Those fundamentals matter far more than hype.

Oversaturated markets are the problem. Warrington now proves that point.

The lesson from Warrington

Warrington should act as a serious warning to investors. We have said for years that overmarketed HMO locations eventually turn on latecomers. That is now happening. The council has identified the wards with the highest concentration of HMOs. It has set out a proposed start date of 25 September 2026 for the central six wards. It also wants tighter control across the rest of the borough.

The message is clear. Once a market becomes overcrowded, performance suffers. Then planning pressure follows.

Investors should not chase the loudest locations. They should choose areas with real demand, controlled supply, and room for sustainable growth.