Permitted Development Extensions in Harlington

We provide clear, professional guidance on permitted development extensions in Harlington and surrounding areas. Whether you’re planning a rear, side, or two-storey extension, understanding local planning constraints and national permitted development limits is essential before work begins.

Common Permitted Development Issues in Harlington

• Dormer facing road
• Overlooking concerns from upper floor windows
• Extension on a flat or maisonette
• Extension covering more than 50% of garden area
• Prior approval required but not obtained
• Eaves height exceeding 3 metres near boundary

Property Types We Advise On in Harlington

• Chalet-style houses
• Victorian properties
• Properties with outbuildings
• Edge-of-settlement homes
• Homes subject to Article 4 Directions

Frequently Asked Questions

How close can I build to my neighbour’s boundary?

Extensions built close to a boundary must meet height and eaves restrictions, especially if within two metres of the boundary.

Do I need prior approval for a larger extension?

In some cases, larger home extensions require a prior approval process where neighbours are notified and the council assesses certain impacts.

Do permitted development rights expire?

Permitted development rights generally remain unless removed by condition or Article 4 Direction.

Can I convert my loft and add a dormer?

Dormer loft conversions are often permitted development within volume limits.

Can I extend a house that has already been extended?

Permitted development limits are cumulative, so previous extensions may reduce what is still allowed.

Can I remove a chimney without permission?

External alterations may require permission depending on property type and location.

If you're planning an extension in Harlington and want to confirm whether it qualifies under permitted development rules, request a free assessment today and get clarity before you build.