In the heart of Hertfordshire lies a quaint cottage, the recent purchase of a couple with five children. Their dream was simple: extend their home to make space for their growing family. Unfortunately, their aspirations hit a wall when the local council denied their planning application. The reason? The cottage is situated within the green belt—an area where development is heavily restricted to prevent urban sprawl. The Mail’s property expert offered some advice.

Understanding Green Belt Regulations

The concept of green belts was introduced post-World War II, aimed at encircling towns and cities to control urban expansion by keeping the countryside unspoiled. These green belts now cover around 13% of England, an area three times the size of London itself, preserving the natural environment but also imposing strict limitations on development.

Restrictions That Hit Home

While it’s commonly known that green belts prevent the construction of new homes, many are unaware of the stringent controls on altering existing structures. This includes the cottage owned by the couple in Hertfordshire. According to the council, the property had already been extended significantly in the past, reaching the limits of what local regulations allow.

Expert Insights on Building Within Green Belts

Martin Gaine, a chartered town planner, shares that the original intent of green belts was sensible—to encourage development within urban areas and prevent the endless extension of cities into rural lands. However, the rules can feel overly restrictive for homeowners who simply wish to expand their existing homes. National policies do permit extensions, but they must not be “disproportionate,” a term that lacks a clear definition and varies by local council. Often, this means an extension cannot exceed 40% of the home’s original size.

For those whose homes have already been expanded, further extensions may be off the table if they exceed local policy limits. In this scenario, appealing the council’s decision is an option, though success is unlikely if the proposal conflicts with established green belt policies.

Permitted Development Rights

There’s a silver lining for homeowners like our Hertfordshire couple. Properties within the green belt possess the same permitted development rights as those outside it. These rights allow certain types of extensions and additions without the need for full planning permission. This includes extensions at the ground level to the side and rear, and even the construction of outbuildings like summer houses and home offices.

Exploring Alternative Avenues

While these rights come with their limitations, they present a potential pathway for families to gain the extra space they need. It’s essential for homeowners to thoroughly understand these rights and perhaps consult a planning expert to explore what can be achieved under the radar of full planning applications.