Tyttenhanger House Coursers Road Colney Heath St Albans Hertfordshire AL4 0PG Data via plota.co.uk

26/0793/LBC - Listed Building Consent Awaiting decision

Proposal

Repair and conservation of the timber roof structure and pitched roof coverings, re-covering of lead surfaces to the flat valley roof; repair and restoration of the clock tower (cupola), chimneys and entrance canopy; repair, repointing and conservation of the brick envelope; repairs to lead flashing, gutters, pipes and rainwater goods; repair of external windows; installation of roof insulation and photo-voltaic panels; repair of windows and doors; refurbishment and conservation of third floor including long gallery, addition of secondary window glazing; provision of kitchen and WCs; installation of lighting, fixtures and fittings; installation of glazed partitions; repainting, repair and conservation of timber panelling and associated works. (Associated application for full planning permission 26/0801/FUL.) Data via plota.co.uk

View original council record ↗

Application progress

Received
9 Jun 2026
Validated
30 Jun 2026
Consultation
1 Jul 2026
Decision
Awaiting decision

As of 22 Aug 2026, the council is no longer showing this application on their planning portal. It may have been withdrawn or re-listed under a different reference. We've stopped checking it for updates.

Documents 74

Plans & drawings 50

PDF Tdc25125-all-03-e-1100 rev 2 Proposed lighting and fire alarm layout - third floor Drawing/Plans · 30 Jun 2026 View ↗ PDF Tdc25125-all-03-e-2200 rev 3 Proposed small power and ancillary services layout - third floor Drawing/Plans · 30 Jun 2026 View ↗ PDF Tdc25125-all-03-m-4200 rev 2 Proposed ventilation services layout - third floor Drawing/Plans · 30 Jun 2026 View ↗ PDF Tdc25125-all-03-m-4300 rev 2 Proposed heating services layout - third floor Drawing/Plans · 30 Jun 2026 View ↗ PDF Tdc25125-all-03-m-4400 rev 2 Proposed refrigeration services layout - third floor Drawing/Plans · 30 Jun 2026 View ↗ PDF Tdc25125-all-03-ph-6200 rev 1 Proposed domestic hot and cold water services layout - third floor Drawing/Plans · 30 Jun 2026 View ↗ PDF Tdc25125-all-rf-e-2210 rev 1 Proposed small power and ancillary services layout - third floor Drawing/Plans · 30 Jun 2026 View ↗ PDF 020205 rev a Existing annexe elevation e north Drawing/Plans · 9 Jun 2026 View ↗ PDF 020206 rev a Existing annexe elevation f south Drawing/Plans · 9 Jun 2026 View ↗ PDF 010302 rev a Existing annexe roof plan Drawing/Plans · 9 Jun 2026 View ↗ PDF 020201 rev a Existing elevation a north Drawing/Plans · 9 Jun 2026 View ↗ PDF 020202 rev a Existing elevation b east Drawing/Plans · 9 Jun 2026 View ↗ PDF 020203 rev a Existing elevation c south Drawing/Plans · 9 Jun 2026 View ↗ PDF 020204 rev a Existing elevation d west Drawing/Plans · 9 Jun 2026 View ↗ PDF 010301 rev a Existing roof plan Drawing/Plans · 9 Jun 2026 View ↗ PDF 020101 rev a Existing section bb Drawing/Plans · 9 Jun 2026 View ↗ PDF 020103 rev a Existing section hh Drawing/Plans · 9 Jun 2026 View ↗ PDF 020102 rev a Existing sections ff and gg Drawing/Plans · 9 Jun 2026 View ↗ PDF 010300 Existing third floor plan Drawing/Plans · 9 Jun 2026 View ↗ PDF 050108 rev a Proposed fcu details Drawing/Plans · 9 Jun 2026 View ↗ PDF 040102 rev a Proposed meeting room 01 plan and elevations Drawing/Plans · 9 Jun 2026 View ↗ PDF 040104 rev a Proposed office 01 plan and elevations Drawing/Plans · 9 Jun 2026 View ↗ PDF 040105 rev a Proposed office 02 plan and elevations Drawing/Plans · 9 Jun 2026 View ↗ PDF 040106 rev a Proposed office 03 plan and elevations Drawing/Plans · 9 Jun 2026 View ↗ PDF 030300 rev a Proposed third floor plan Drawing/Plans · 9 Jun 2026 View ↗ PDF Sw.002 Proposed secondary glazing detail_storm-slimline-unit-reveal_or similar Drawing/Plans · 9 Jun 2026 View ↗ PDF 040101 rev a Proposed third floor kitchen plan and elevations Drawing/Plans · 9 Jun 2026 View ↗ PDF 030100 rev a Proposed third floor sections Drawing/Plans · 9 Jun 2026 View ↗ PDF 040100 rev a Proposed third floor wc plan and elevations Drawing/Plans · 9 Jun 2026 View ↗ PDF 050107 rev a Proposed typical details Drawing/Plans · 9 Jun 2026 View ↗ PDF 010115 Site location plan Drawing/Plans · 9 Jun 2026 View ↗ PDF 010200 Existing site plan Drawing/Plans · 9 Jun 2026 View ↗ PDF 020302 rev a Third floor floor types key plan Drawing/Plans · 9 Jun 2026 View ↗ PDF 020303 rev a Third floor demolition key plan Drawing/Plans · 9 Jun 2026 View ↗ PDF 020301 rev a Third floor door window panelling plan Drawing/Plans · 9 Jun 2026 View ↗ PDF 020300 rev a Third floor scope of works Drawing/Plans · 9 Jun 2026 View ↗ PDF Tdc25125-all-all-m-4100 rev 1 Proposed refrigerant schematic Drawing/Plans · 9 Jun 2026 View ↗ PDF Tdc25125-all-all-m-4110 rev 1 Proposed heating schematic Drawing/Plans · 9 Jun 2026 View ↗ PDF Tdc25125-all-all-m-4120 rev 0 Proposed ventilation schematic Drawing/Plans · 9 Jun 2026 View ↗ PDF Tdc25125-all-all-m-4130 rev 1 Proposed kitchen ventilation schematic Drawing/Plans · 9 Jun 2026 View ↗ PDF Tdc25125-all-all-ph-6100 rev 1 Proposed domestic hot and cold water schematic Drawing/Plans · 9 Jun 2026 View ↗ PDF Tdc25125-all-rf-m-4210 rev 0 Proposed ventilation services layout - roof plan Drawing/Plans · 9 Jun 2026 View ↗ PDF Tdc25125-all-rf-m-4410 rev 0 Proposed refrigeration services layout - roof level Drawing/Plans · 9 Jun 2026 View ↗ PDF 25661-rs3 Roof repairs - ceiling to roof level Drawing/Plans · 9 Jun 2026 View ↗ PDF 25661-rs2 Roof repairs - 3rd floor to ceiling level Drawing/Plans · 9 Jun 2026 View ↗ PDF 25661-er3 t1 East elevation repairs Drawing/Plans · 9 Jun 2026 View ↗ PDF 25661-er5 t1 North elevation repairs Drawing/Plans · 9 Jun 2026 View ↗ PDF 25661-er1 t1 South elevation repairs Drawing/Plans · 9 Jun 2026 View ↗ PDF 25661-er2 t1 South return elevation repairs Drawing/Plans · 9 Jun 2026 View ↗ PDF 25661-er4 tr1 West elevation repairs Drawing/Plans · 9 Jun 2026 View ↗

All documents on the council site ↗

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Important details

Council
Hertsmere
Application type
Listed Building Consent
Postcode
AL4 0PG
Received
9 Jun 2026
Validated
30 Jun 2026
Ward
Shenley
Parish
The Parish Council South Mimms And Ridge
Case officer
Show
Target decision
25 Aug 2026
Applicant
Show
Agent
MWA

Public comments

No public comments yet.

Last counted 21 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14973874
Consultation
1 Jul 2026
Comments by
22 Jul 2026
Press notice
15 Jul 2026
Env. assessment
No
Hertsmere
Planning Authority Score
3.3/10
Poor
#225 of 296 councils
Relevant to this application:
Other 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 performance
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