Change-of-use drawings for Dacorum — commercial to residential under Class MA, or a full application where the use classes do not line up — measured, drawn and evidenced for Dacorum Borough Council, with free revisions until your decision.
Dacorum Borough Council granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. Extensive Metropolitan Green Belt covers the rural borough, concentrating growth on the three main towns and allocated sites, which is where a policy-literate drawing pack earns its keep. Its dominant Georgian (1714–1837), Victorian (1837–1901), interwar (1918–1939) and postwar (1945–1970) housing stock sets the design brief on most streets.
The permitted-development ceilings are fixed: 40m³ of new roof volume for a terraced loft and 50m³ for a semi or detached house under Class B, plus a 3m single-storey rear extension on a terrace or 4m on a detached house under Class A. Dacorum carries at least one Article 4 direction, and conservation areas including Hemel Hempstead Old Town, Berkhamsted and Tring remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Dacorum is determined against an 8-week statutory target.
Hemel Hempstead (a postwar New Town of planned neighbourhoods around the Marlowes centre), Berkhamsted (a historic canal-side market town in a Chilterns setting), Tring (a historic market town at the Chilterns gap), Kings Langley (a historic commuter village with a conservation-area core), Aldbury (a model rural conservation village below the Chilterns) and Bovingdon (a rural Green Belt village) — these are the Dacorum pockets our drawings cover most. Heritage designations here include Hemel Hempstead Old Town, Berkhamsted, Tring, Aldbury, Kings Langley and Bovingdon. Dacorum Borough Council weighs each proposal against the Dacorum Core Strategy 2006–2031 (adopted September 2013), where the Chilterns National Landscape (AONB) covers and adjoins Berkhamsted and Tring, adding landscape-protection constraints on design and siting. Converted and purpose-built flats appear across Hemel Hempstead and the town centres, and none of them hold householder permitted-development rights.. On roofs the borough is pitched tiled roofs on the postwar New Town housing and steep tiled and gabled roofs on the historic market-town and village cores, over postwar New Town planned neighbourhoods across Hemel Hempstead around the Marlowes centre, medieval, Georgian and Victorian market-town cores at Berkhamsted and Tring, interwar and Victorian stock and vernacular cottages in the surrounding villages and larger detached housing on the Chilterns fringe.
The 2020 amendments to the Use Classes Order collapsed shops, offices, cafés, gyms and clinics into a single Class E, so movement between those uses is generally not development at all and needs no application. What still bites is the move out of Class E — most importantly into residential — and the uses that sit outside the class system altogether, such as houses in multiple occupation, pubs, takeaways and betting shops, each of which is sui generis or in its own class.
Class MA gives a prior-approval route from Class E to dwellings. Dacorum Borough Council cannot refuse it on general planning-policy grounds, but it can and does assess a defined list: transport, contamination, flooding, noise from nearby commercial premises, natural light to all habitable rooms, and the impact of losing a ground-floor service use in a designated area. The qualifying conditions are strict — two years in Class E use, three months vacant, and a floorspace cap — and evidence of those facts is part of the submission, not an afterthought.
Dacorum's stock is largely postwar New Town planned neighbourhoods across Hemel Hempstead around the Marlowes centre, medieval, Georgian and Victorian market-town cores at Berkhamsted and Tring, interwar and Victorian stock and vernacular cottages in the surrounding villages and larger detached housing on the Chilterns fringe, and the buildings that come up for conversion here sit among Hemel Hempstead, Berkhamsted, Tring and Kings Langley — which is why the noise and amenity questions differ street by street rather than following a district-wide rule. Where the building sits in a conservation area such as Hemel Hempstead Old Town, Berkhamsted, Tring, Aldbury, Kings Langley and Bovingdon, the shopfront and frontage questions come back into play even on a prior-approval route. Dacorum's Article 4 directions, confirmed in November 2022, cover employment and town-centre areas and retain the requirement for planning permission to convert identified properties to residential use, and the borough's twenty-five conservation areas add further character controls.
Extensive Metropolitan Green Belt covers the rural borough, concentrating growth on the three main towns and allocated sites, and the Chilterns National Landscape (AONB) covers and adjoins Berkhamsted and Tring, adding landscape-protection constraints on design and siting. Both bear directly on a conversion: Dacorum Borough Council reads the resulting homes against the same amenity expectations it applies to new build, so the layout has to stand up as housing before the prior-approval matters are even reached.
Movement within Class E is usually not development. You will need prior approval or a full application from Dacorum Borough Council where any of these apply:
We measure the building as existing, draw the proposed layout to habitable-room and daylight standards, and assemble the qualifying evidence — use history, vacancy, floorspace — so the prior-approval clock starts on a complete submission.
Below is Dacorum Borough Council's real decision record, drawn from official planning statistics and refreshed as new data lands. Dacorum grants a fair share of householder applications, with green-belt containment, the Chilterns AONB and its many conservation areas the recurring constraints on larger schemes. Prior-approval applications are decided against a fixed list of matters, so a submission that answers each one directly is the one that gets through.
Source: MHCLG planning application statistics (householder decisions, England, 1 April 2025 - 31 March 2026). Compare every borough on our London approval-rate league table.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
Across Hemel Hempstead, Berkhamsted and Tring, the conversions that go through are the ones that treat the resulting homes as homes: every habitable room with adequate natural light, room sizes meeting the nationally described space standards, sensible refuse and cycle provision, and a considered answer on noise where the neighbouring units are still commercial. Natural light is the single most common reason a Class MA prior approval is refused, and it is a drawing problem before it is a policy problem.
Extensive Metropolitan Green Belt covers the rural borough, concentrating growth on the three main towns and allocated sites. Where the building does not qualify for Class MA — because of its use history, its floorspace or a local Article 4 direction — a full application is the honest route, and we say so at the outset rather than burning 56 days on a prior approval that was never going to be granted.
We prepare change-of-use submissions across Dacorum. A few of the areas where conversions come up most often:
Change of use drawings for Hemel Hempstead — a postwar New Town of planned neighbourhoods around the Marlowes centre — measured, laid out to space and daylight standards, and evidenced for Dacorum Borough Council.
Change of use drawings for Berkhamsted — a historic canal-side market town in a Chilterns setting — measured, laid out to space and daylight standards, and evidenced for Dacorum Borough Council.
Change of use drawings for Tring — a historic market town at the Chilterns gap — measured, laid out to space and daylight standards, and evidenced for Dacorum Borough Council.
Change of use drawings for Kings Langley — a historic commuter village with a conservation-area core — measured, laid out to space and daylight standards, and evidenced for Dacorum Borough Council.
Change of use drawings for Aldbury — a model rural conservation village below the Chilterns — measured, laid out to space and daylight standards, and evidenced for Dacorum Borough Council.
Change of use drawings for Bovingdon — a rural Green Belt village — measured, laid out to space and daylight standards, and evidenced for Dacorum Borough Council.
Three routes, three different tests and three different timetables.
| Change | Route | Determination period | What Dacorum Borough Council assesses |
|---|---|---|---|
| Shop to café or office (within Class E) | Not development — no application | n/a | Nothing, unless conditions restrict use |
| Class E to dwellings | Class MA prior approval | 56 days | Transport, flooding, contamination, noise, natural light |
| Class E to dwellings, not qualifying | Full planning application | 8 weeks (13 for major) | Full policy assessment |
| House to small HMO | Class L, unless Article 4 applies | n/a or 8 weeks | Concentration, amenity, parking |
| Anything to sui generis use | Full planning application | 8 weeks | Amenity, hours, highways |
Routes from the Town and Country Planning (Use Classes) Order 1987 as amended in 2020, and the GPDO 2015, Schedule 2, Part 3, Class MA.
A process built around the qualifying evidence, not just the drawings.
Tell us the current use, how long it has run and what you want to do. We confirm the use classes, whether Class MA is available in Dacorum, and whether an Article 4 direction removes it.
We measure the building as existing, including window positions and floor-to-ceiling heights, because the daylight and space-standards case depends on real dimensions.
We draw the proposed layouts to space and daylight standards and assemble the use-history, vacancy and floorspace evidence Dacorum Borough Council needs to validate the submission.
We submit, track the determination period, answer officer queries and revise free until the decision is issued.
It depends on the use classes. Moving between uses inside Class E — shop, office, café, gym, clinic — is generally not development and needs no application to Dacorum Borough Council. Moving out of Class E, particularly into residential, needs either prior approval under Class MA or a full application. We establish which applies before any drawing work, because the routes have different evidence requirements.
Class MA is the permitted-development right that allows Class E commercial, business and service premises to become dwellings. Dacorum Borough Council assesses a defined list of matters — transport, contamination, flooding, noise, natural light and, in some designated areas, the loss of a ground-floor service use — and must determine within 56 days. It cannot refuse on general policy grounds, which is why it is a faster route where the building qualifies.
The building must have been in Class E use for at least two years before the application, and must have been vacant for at least three months immediately before it. There is also a floorspace cap, and the right is disapplied on certain protected land and where an Article 4 direction removes it. Evidence of use history and vacancy forms part of the submission — a bare assertion will not validate. This applies to your Dacorum address specifically. Dacorum Borough Council is the decision-maker.
Yes, and it is the most common reason Class MA prior approvals fail. Every habitable room must have adequate natural light, and deep commercial floorplates frequently cannot deliver it without new openings or a reduced unit count. We test it on the layout first, because discovering it after submission costs a full determination period. This applies to your Dacorum address specifically. Dacorum Borough Council is the decision-maker.
Almost always where the use becomes residential. A material change of use triggers requirements for fire safety and means of escape, sound insulation between units under Part E, ventilation, and thermal performance. Planning and building control are separate consents — we prepare both so the scheme that is approved is the scheme that can be built and signed off. This applies to your Dacorum address specifically. Dacorum Borough Council is the decision-maker.
A Class MA prior approval must be determined within 56 days of a valid submission, and the application is deemed approved if the council fails to decide in time — which makes validation completeness unusually valuable. A full application runs to the standard eight-week target, or thirteen weeks if it counts as a major development. This applies to your Dacorum address specifically. Dacorum Borough Council is the decision-maker.
We quote each Dacorum change of use individually, because the survey effort and the evidence needed depend entirely on the building and its use history, and send a fixed, no-obligation quote within one working day. It covers survey, layouts and supporting evidence with free revisions until Dacorum Borough Council decides. Call 020 7864 7245 to start.
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