Two-storey extension planning approval in Dacorum
Based on decisions in the last 5 years, as of 23 Jun 2026.
Of 41 two-storey extension planning applications decided by Dacorum in the last 5 years, 78% were approved. This is the council's track record for this kind of work. It is a useful gauge before you apply, not a guarantee for any one application.
Other work in Dacorum
- Extension : 88% approved (226 decided)
- Rear extension : 89% approved (154 decided)
- Tree work : 99% approved (143 decided)
- Loft conversion : 89% approved (63 decided)
- Roof / fenestration : 90% approved (61 decided)
- Demolition : 79% approved (53 decided)
- Side extension : 94% approved (52 decided)
- Porch : 88% approved (41 decided)
Method
Approval rate = approved ÷ (approved + refused) over the public planning decisions we hold for Dacorum, matched to a type of work from the application description. We lead with the last few years so the figure reflects how Dacorum decides today, with the longer record as context. A rate is only shown once there are enough decided applications for it to be reliable. We publish aggregate figures only, never an individual application or applicant name. Read the full method and limits.