Planning permission in East Hertfordshire isn't a simple yes or no. With 42 conservation areas, over 5,000 listed buildings, and Green Belt land cutting across the borough, what applies to your neighbour's house could be completely different from what applies to yours. Most homeowners assume the general rules cover them — they often don't. WhatCanIBuild exists precisely to cut through that assumption and show you what's actually relevant to your address.
The short version
- East Hertfordshire has 42 conservation areas covering many streets across the borough
- Over 5,000 listed buildings recorded — constraints can apply to unlisted neighbours too
- Green Belt designation adds another layer that catches many homeowners off guard
- A £548 householder application fee is at stake if you get this wrong
Why your postcode isn't enough
Homeowners in CM23, SG12, SG13, SG14 and SG9 all fall under East Hertfordshire District Council — but that doesn't mean they face the same rules. Whether you're in Bishops Stortford, Hertford, Ware or a village parish, the constraints on your specific property can vary street by street. A conservation area boundary doesn't follow obvious landmarks. An Article 4 Direction can remove permitted development rights from an entire road without a single sign to warn you. Most homeowners don't realise their property is affected until they're already mid-project.
Heritage coverage is wider than you think
42 conservation areas sounds manageable until you consider how many streets that actually covers across the borough. And listed building status isn't just about the building itself — works to structures nearby or within the curtilage can also be caught. If your property sits close to one of the borough's 5,000-plus listed buildings, the implications for what you can do without permission are harder to predict than most guides will tell you. The best way to know what that heritage context actually means for your specific project — not just that it exists — is to check what's been approved and refused on properties like yours.
Green Belt land
Parts of East Hertfordshire fall within the Green Belt. Development restrictions here go beyond standard householder rules and can apply even to projects that would be straightforward elsewhere in the borough.
Permitted development isn't a guarantee
The national permitted development framework gives homeowners a baseline — certain extensions, loft conversions and outbuildings can go ahead without a full application. But that baseline gets eroded quickly by local conditions. Conservation area status removes some rights entirely. Article 4 Directions can strip others. Previous extensions on your property affect what's still permitted. And if your project sits even slightly outside the permitted development envelope, you're looking at an 8-week decision process and a £548 application fee — assuming you haven't already started work.
What actually matters for your property
Knowing you're near a conservation area is one thing. Knowing what that means for a two-storey rear extension on your specific house, on your specific street, given what's been approved and refused for similar projects nearby — that's a different question entirely. WhatCanIBuild pulls together your property's actual constraint profile alongside local approval patterns, so you're not guessing at rules that were written to be complicated.
The homeowners who run into trouble aren't the ones who checked and got a clear answer. They're the ones who assumed the general guidance covered them, started work, and found out it didn't. East Hertfordshire's heritage coverage makes that risk higher than in most parts of the country.
Before you commit to anything — even a conversation with a builder — WhatCanIBuild can show you exactly where your property stands.
These rules vary by property
Conservation areas, Article 4 directions, and other constraints can change everything. Check what actually applies to your address.
Check my address