Ashridge House Berkhamsted Hertfordshire HP4 1NS Data via plota.co.uk

25/01374/MFA - Major Full Application Approved

Proposal

Change of use to repurpose 206 rooms for visitor accommodation alongside current uses and facilities. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
2 Jun 2025
✓
Consultation
4 Jun 2025
✓
Validated
29 Jan 2026
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Committee
12 Mar 2026
✓
Approved
1 Apr 2026

Approved on 1 Apr 2026 · Committee Decision · Last checked 7 Jul 2026

Planning committee

Decided by Dacorum Development Management on 12 Mar 2026.

Approved

  • Officers advised approval because the existing rooms could support the rural economy without harming heritage, highways or the protected landscape, subject to mitigation.
  • The committee voted 12 for, none against and one abstention, resolving to delegate approval subject to assessment and mitigation conditions.
Read how the committee decided The proposal, site history, officers’ assessment, consultation responses, local concerns, committee vote and decision. Includes the meeting recording

Source: Plota analysis of Dacorum's committee minutes of 12 Mar 2026.

Documents 54

Plans & drawings 36

PDF Site location plan Amended Plans and Drawings · 19 Mar 2026 View ↗ PDF Amended application form Superseded Plans/Documents · 22 Dec 2025 View ↗ PDF Proposed ground floor plan Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed first floor plan Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed ground floor - greenborough Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed first floor - greenborough Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed ground floor plan - angus Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed first floor plan - angus Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed second floor plan - angus Proposed Plan · 22 Dec 2025 View ↗ PDF Proposed ground floor plan - brownlow lodges (1 of 3) Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed ground floor plan - brownlow lodges (2 of 3) Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed ground floor plan - brownlow lodges (3 of 3) Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed first floor plan - brownlow lodges (1 of 3) Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed first floor plan - brownlow lodges (2 of 3) Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Proposed first floor plan - brownlow lodges (3 of 3) Proposed Floor Plan · 22 Dec 2025 View ↗ PDF Parking plan Additional Information · 21 Nov 2025 View ↗ PDF Application form redacted Superseded Plans/Documents · 10 Jun 2025 View ↗ PDF Applicationformredacted Superseded Plans/Documents · 30 May 2025 View ↗ PDF Site location plan Superseded Plans and Drawings · 30 May 2025 View ↗ PDF Proposed change of use plan Proposed Plan · 30 May 2025 View ↗ PDF Proposed mezzanine floor Proposed Floor Plan · 30 May 2025 View ↗ PDF Proposed mezzanine floor plan Proposed Floor Plan · 30 May 2025 View ↗ PDF Proposed mezzanine floor plan Proposed Floor Plan · 30 May 2025 View ↗ PDF Existing ground floor plan coronational walk Additional Plans · 30 May 2025 View ↗ PDF Proposed ground floor plan coronational walk Proposed Floor Plan · 30 May 2025 View ↗ PDF Existing first floor plan coronational walk Existing Floor Plan · 30 May 2025 View ↗ PDF Proposed first floor plan coronation walk Proposed Floor Plan · 30 May 2025 View ↗ PDF Existing ground floor plan Existing Floor Plan · 30 May 2025 View ↗ PDF Proposed ground floor plan Additional Plans · 30 May 2025 View ↗ PDF Existing first floor plan Existing Floor Plan · 30 May 2025 View ↗ PDF Proposed first floor plan Proposed Floor Plan · 30 May 2025 View ↗ PDF Existing second floor plan Existing Floor Plan · 30 May 2025 View ↗ PDF Proposed second floor plan Proposed Floor Plan · 30 May 2025 View ↗ PDF Existing mezzanine floor plan Existing Floor Plans · 30 May 2025 View ↗ PDF Existing mezzanine floor plan Existing Floor Plan · 30 May 2025 View ↗ PDF Existing mezzanine floor plan Existing Floor Plan · 30 May 2025 View ↗

All documents on the council site ↗

Site constraints 7

7 listed buildings within 150 m of the postcode pin
Nearest: Ashridge House, including raised terrace, walls and steps to east and south, and iron railings to north, Grade I, about 22 m from the postcode pin · 1 Grade I, 1 Grade II*, 5 Grade II
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show all 7 with distances
Historic England ↗
Chilterns National Landscape
Great weight to conserving the landscape; major development restricted.
Previously an area of outstanding natural beauty, which is still the designation in law. Since 2023 authorities must seek to further its purpose, not merely have regard to it.
Registered park or garden: Ashridge Estate
Nationally designated heritage. Its significance and setting carry great weight.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Historic England ↗
Agricultural land, grade 3a
Best and most versatile land (grades 1, 2 and 3a). Source: the Predictive Agricultural Land Classification Map (Defra and Natural England, 2025; the Welsh Government's Predictive ALC Map 2 in Wales), a model rather than a site survey. A site survey can differ.
Where development of farmland is needed, policy prefers poorer land over the best and most versatile (grades 1, 2 and 3a). Three sources: Natural England's post-1988 field surveys, which are definitive where they exist; the Defra predictive map for England (2025) and the Welsh Government predictive map, modelled from the soil map with 3a and 3b split; and the 1970s provisional map, which planners and other services still show, coarser and with grade 3 undivided. Where the provisional and predicted grades disagree, treat the predicted grade as the current estimate and expect an application to carry its own survey.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Special area of conservation about 251 m away: Chilterns Beechwoods
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Also on the record
SSSI about 251 m away: Ashridge Commons and Woods SSSI.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Important details

Council
Dacorum
Application type
Major Full Application
Postcode
HP4 1NS
Received
2 Jun 2025
Validated
29 Jan 2026
Ward
Ashridge
Parish
Little Gaddesden Parish Council
Case officer
Show
Decision
Grant Permission/Consent
Decision date
1 Apr 2026
Decision level
Committee Decision
Agent
Lichfields

How this decision compares

Decided in 62 days from validation, 6 days slower than Dacorum's median of 56 for changes of use. Approved, as 78% of changes of use here are.

59%decided within 8 weeks
78%approved
12%go to committee

Plota live figures for changes of use decided by Dacorum in the last twelve months, from validation. Dacorum decision record →

Consultation & key dates

Alt. reference
PP-13785884
Neighbours
4 Jun 2025
Comments by
25 Jun 2025
Committee
12 Mar 2026
Env. assessment
No
Dacorum
Planning Authority Score
7.3/10
Good
#51 of 296 councils
Relevant to this application:
Change of use

Dacorum is faster than most councils at deciding householder applications, ranking #50 out of 296. Only 22% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Householder applications are slightly more likely to be approved here (91%) than the national average (90%).

Faster than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Dacorum decision statistics
Based on MHCLG data, the year to March 2026
88%
Overall approval rate
Above avg (87%) #150 of 296
91%
Householder approved
Above avg (90%) #171 of 296
78%
Decided in 8 weeks
Above avg (63%) #50 of 296
22%
Extended time limit
Below avg (41%) #22 of 296
76%
Minor dwellings approved
127 decided (1-9 homes)
79%
Major dwellings approved
14 decided (10+ homes)
71%
Change of use approved
21 decided
1,130
Total decisions
132 refused in the year to March 2026