Caspian And Tasman House Elstree Road Elstree Hertfordshire Data via plota.co.uk

26/1110/MA - Minor Amendment Approved
Admin / procedural

Proposal

Application for a non-material amendment to allow for increased floor space following the grant of planning permission ref . Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
5 Aug 2026
✓
Approved
1 Oct 2026

Approved on 1 Oct 2026 · Last checked 5 Oct 2026

Documents 3

Plans & drawings 1

PDF 26053-umc-xxxx-si-dr-a-0005-p01 Proposed site layout Drawing/Plans · 5 Aug 2026 View ↗

Application forms 1

PDF Applicationformredacted Application Form · 5 Aug 2026 View ↗

Other documents 1

PDF Cover letter Supporting Documents · 5 Aug 2026 View ↗

All documents on the council site ↗

Associated applications 3

Site constraints 4

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 ↗
Habitat network: Network Expansion Zone
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the Elstree built-up area; 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 listed building at the site · No scheduled monument at the site

Checked on 6 October 2026. 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.

Building

Floor area295 m² (3,175 sq ft)
Energy ratingB (asset rating 31)
UseB1 Offices and Workshop businesses
HeatingAir Conditioning

From the energy performance certificate lodged in September 2020, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Hertsmere
Application type
Minor Amendment
Postcode
WD6 3BS
Received
5 Aug 2026
Validated
5 Aug 2026
Ward
Aldenham West
Parish
Aldenham Parish
Case officer
Show
Target decision
30 Sept 2026
Decision
Approval
Decision date
1 Oct 2026
Applicant
Show
Agent
HTA Design LLP

Public comments

No public comments yet.

Last counted 5 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15131376
Planning Portal ref
PP-15131376
Statutory expiry
30 Sept 2026
Env. assessment
No

Historical activity at this location

11 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2018 Approved
Beaufort House The Waterfront Elstree Road Elstree Hertfordshire WD6 3BS
Installation of new revolving entrance door and side door.
18/2096/FUL
2017 Approved
Beaufort House The Waterfront Elstree Road Elstree Hertfordshire WD6 3BS
Installation of a new entrance lobby area
17/1857/FUL
2017 Approved
Beaufort House The Waterfront Elstree Road Elstree Hertfordshire WD6 3BS
Erection of chiller enclosure, installation of MRI quench pipe, installation of intake du…
17/1198/FUL
2017 Approved
Caspian House The Waterfront Elstree Road Elstree Hertfordshire WD6 3BS
Change of use of vacant 1st floor office space from (Class B1) to medical consulting (Cla…
17/0715/FUL
2017 Approved
Beaufort House The Waterfront Elstree Road Elstree Hertfordshire WD6 3BS
Application for variation of condition 2 of planning permission reference 15/1629/FUL - T…
17/0958/VOC
2016 Approved
Lombard House The Waterfront Elstree Road Elstree Hertfordshire WD6 3BS
Installation of six louvre panels to front and side elevations (Amended application form…
16/2055/FUL
2016 Approved
Lombard House The Waterfront Elstree Road Elstree Hertfordshire WD6 3BS
Installation of six louvre panels to front and side elevations (Amended application form…
16/2055/FUL
2016 Approved
Beaufort House The Waterfront Elstree Road Elstree Hertfordshire WD6 3BS
Application for variation of condition 2 to extend the permitted hours of operation follo…
16/2054/VOC
2016 Approved
Beaufort House The Waterfront Elstree Road Elstree Hertfordshire WD6 3BS
Application for variation of condition 2 to extend the permitted hours of operation follo…
16/2054/VOC
2016 Approved
The Waterfront Elstree Road Elstree Hertfordshire
Application for approval of details reserved by conditions 4 of planning permission refer…
16/0255/DOC
2016 Approved
The Waterfront Elstree Road Elstree Hertfordshire
Application for approval of details reserved by conditions 4 of planning permission refer…
16/0255/DOC
Hertsmere
Planning Authority Score
3.3/10
Poor
#225 of 296 councils
Relevant to this application:
Householder decisions

Hertsmere is slower than most councils at deciding householder applications, ranking #243 out of 296. 55% of applications have the time limit extended, above the 41% national average. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).

Slower than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Hertsmere decision statistics
Based on MHCLG data, the year to March 2026
93%
Overall approval rate
Above avg (87%) #57 of 296
94%
Householder approved
Above avg (90%) #108 of 296
49%
Decided in 8 weeks
Below avg (63%) #243 of 296
55%
Extended time limit
Above avg (41%) #249 of 296
84%
Minor dwellings approved
102 decided (1-9 homes)
75%
Major dwellings approved
8 decided (10+ homes)
89%
Change of use approved
27 decided
742
Total decisions
55 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

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.