How likely is my planning application to get approved in Dacorum?

JH

James Hartley

Planning Content

Planning Permission3 min readVerified Summer 2026

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Planning permission in Dacorum feels like it should be simple — submit an application, wait eight weeks, get a yes or no. But most homeowners don't realise how much the outcome depends on factors specific to their property, their street, and even their immediate neighbours' planning history. WhatCanIBuild exists precisely because those variables matter more than any general rule of thumb.

The short version

  • Dacorum has 23 conservation areas and significant Green Belt coverage — both restrict what you can do without permission
  • Around 920 listed buildings are recorded across the borough, each carrying its own layer of complexity
  • What was approved on your neighbour's house may not be approved on yours

Why Dacorum is more complicated than most

Dacorum isn't a borough where you can assume the standard rules apply. Green Belt land covers large parts of the area — including stretches around Berkhamsted, Tring, and Kings Langley — and development in these areas is treated very differently to urban plots. But here's the thing: being outside the Green Belt doesn't mean you're in the clear. Conservation area boundaries in Dacorum cut through residential streets in ways that aren't always obvious from a postcode alone. Your house could be inside one while your neighbour's isn't.

Then there are the 920-plus listed buildings scattered across the borough. A listed building designation doesn't just affect what you can do to the building itself — it can affect outbuildings, boundary treatments, and works you might assume are straightforward. Most homeowners don't realise the full reach of a listing until they're already mid-project.

The thing that catches people out

Permitted development rights — the rules that allow certain works without a formal application — sound reassuring until you discover they can be removed. Article 4 Directions strip those rights from specific properties or areas, and Dacorum has used them. If your property sits in an affected area, works your neighbour completed without permission could require full planning consent from you.

Conservation area status alone changes what counts as permitted development. Extensions, roof alterations, cladding, even some outbuildings — the thresholds shift depending on where you are. And within a conservation area, the council's design expectations are higher. Applications that would sail through elsewhere can face objections on character and appearance grounds.

Don't assume what worked nearby applies to you

Planning decisions in Dacorum are made property by property. A consent granted on your street doesn't guarantee the same outcome for your home — even for an identical project.

What actually predicts approval?

This is the question homeowners really want answered, and it's the one that's hardest to answer without looking at real data. What's been approved and refused nearby? What reasons did refusals cite? Are there patterns in how Dacorum handles certain project types in certain areas? What does the combination of constraints on YOUR property actually mean for your chances?

Those answers exist — they're buried in decision records, appeal outcomes, and local planning history. The best way to surface them quickly is WhatCanIBuild, which pulls together what's actually happened near your address so you're not guessing.

Before you spend £548

The householder application fee in Dacorum is £548. That's before any pre-application advice, any professional drawings, or any time spent waiting. Submitting without understanding your property's specific risk profile is a gamble. WhatCanIBuild shows you the approval patterns for projects like yours, factoring in the constraints that apply to your address — so you go in knowing what you're dealing with, not hoping for the best.

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