Rose Farm House The Common Chipperfield Kings Langley Hertfordshire WD4 9BY Data via plota.co.uk

26/01794/FHA - Full Householder Application With planning case officer

Proposal

Single and double storey rear extension, front facing dormer extension, followed by 1no. bay window and new front porch. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
18 Aug 2026
✓
Consultation
18 Aug 2026
Decision
Expected by 13 Oct 2026

Under consideration

No decision has been issued yet. Plota predicts a decision soon after comments close on 13 Oct 2026, from Dacorum's recent extensions.

Comments are open until 13 Oct 2026

Comment on this application ↗

Documents 25

Plans & drawings 23

PDF Location plan Location Plan · 17 Aug 2026 View ↗ PDF Existing site plan Site and Block Plans · 17 Aug 2026 View ↗ PDF Proposed site plan Block Plan of the Site · 17 Aug 2026 View ↗ PDF Existing landscape plan Landscaping Plan · 17 Aug 2026 View ↗ PDF Proposed landscape plan Landscaping Plan · 17 Aug 2026 View ↗ IMG Front visual E-Plans & Drawings · 17 Aug 2026 View ↗ IMG Rear visual E-Plans & Drawings · 17 Aug 2026 View ↗ PDF Proposed west elevations Proposed Elevations · 17 Aug 2026 View ↗ PDF Proposed roof plans Proposed Roof Plans · 17 Aug 2026 View ↗ PDF Proposed rear elevations Proposed Elevations · 17 Aug 2026 View ↗ PDF Proposed gf plans Proposed Floor Plans · 17 Aug 2026 View ↗ PDF Proposed front elevations Proposed Elevations · 17 Aug 2026 View ↗ PDF Proposed ff plans Proposed Floor Plans · 17 Aug 2026 View ↗ PDF Proposed east elevations Proposed Elevations · 17 Aug 2026 View ↗ PDF Existing west elevations Existing Elevations · 17 Aug 2026 View ↗ PDF Existing section b-b plans Section Plans · 17 Aug 2026 View ↗ PDF Existing section a-a plans Section Plans · 17 Aug 2026 View ↗ PDF Existing roof plans Existing Roof Plan · 17 Aug 2026 View ↗ PDF Existing rear elevations Existing Elevations · 17 Aug 2026 View ↗ PDF Existing gf plans Existing Floor Plans · 17 Aug 2026 View ↗ PDF Existing front elevations Existing Elevations · 17 Aug 2026 View ↗ PDF Existing east elevations Existing Elevations · 17 Aug 2026 View ↗ PDF Existing ff plans Existing Floor Plans · 17 Aug 2026 View ↗

All documents on the council site ↗

Site constraints 7

Green belt: London
Inappropriate development needs very special circumstances.
Green belt policy allows a short list of exceptions, such as limited extensions and replacement buildings. Anything else needs very special circumstances that clearly outweigh the harm. Some green belt land can count as grey belt, where it does not strongly serve the green belt's purposes. The council decides this in its green belt assessment or on each application, so we do not mark it here.
Read the government guidance ↗
Chipperfield conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
2 listed buildings within 150 m
Nearest: Old Swan House, Grade II, 60 m away · 2 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 2 with distances
Historic England ↗
Also on the record
Radon affected area, class 2; Inside the Chipperfield built-up area; Open access land 11 m away: Access Land - Combined Open Country, Registered Common Land and Section 16 Dedicated Land. MoD Byelaw, Section 28 Exclusions, Racecourses and Aerodromes and ECP Margin have been removed.; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 3, but it predates the buildings here and the current map does not class it as farmland.
Not affected
Outside flood zones 2 and 3 · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) 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.

Sales history 1

Last sold for £985,000 in February 2026. Detached house, freehold.

6 February 2026£985,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area150 m² (1,615 sq ft)
Energy ratingD (59 out of 100), could reach B
PropertyDetached house, 5 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in March 2025, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Dacorum
Application type
Full Householder Application
Postcode
WD4 9BY
Received
18 Aug 2026
Validated
18 Aug 2026
Ward
Bovingdon / Flaunden / Chipperfield
Parish
Chipperfield Parish Council
Case officer
Show
Applicant
Show
Agent
studioCC

Decision outlook

Day 52, past Dacorum's usual 50 days for extensions. 97% are decided within thirteen weeks, so most likely by 17 Nov 2026.

Day 525 days to the predicted decision (day 57)
87%decided within 8 weeks
89%approved
645decided in the last year

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

Public comments

No public comments yet.

5 neighbours consulted · Last counted 2 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15148123
Planning Portal ref
PP-15148123
Neighbours
18 Aug 2026
Consultation
18 Aug 2026
Comments by
13 Oct 2026
Site or press notice
22 Sept 2026
Env. assessment
No
Dacorum
Planning Authority Score
7.3/10
Good
#51 of 296 councils
Relevant to this application:
Householder decisions

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

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.