39 Bishops Avenue Northwood HA6 3DD Data via plota.co.uk

26/1004/CLPD - Certificate of Lawfulness - Proposed Use Approved

Proposal

Certificate of Lawfulness Proposed Development: Conversion of garage to habitable accommodation Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
19 Jun 2026
✓
Validated
23 Jun 2026
✓
Approved
17 Aug 2026

Approved on 17 Aug 2026 · Delegated Decision · Last checked 18 Aug 2026

Site constraints 4

Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Local nature reserve about 274 m away: Oxhey Woods
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
Radon affected area, class 2; Inside the Moor Park built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 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, 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.

Building

Floor area255 m² (2,745 sq ft)
Energy ratingC (75 out of 100), could reach B
PropertyDetached house, 9 habitable rooms
Built1950 to 1966
HeatingBoiler and underfloor heating, mains gas, Boiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in June 2013, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Application type
Certificate of Lawfulness - Proposed Use
Postcode
HA6 3DD
Received
19 Jun 2026
Validated
23 Jun 2026
Ward
Moor Park And Eastbury
Parish
Batchworth Community Council
Case officer
Show
Target decision
18 Aug 2026
Decision
approved
Decision date
17 Aug 2026
Decision level
Delegated Decision
Applicant
Show

How this decision compares

Decided in 55 days from validation, about the council's usual 54 days. Approved, as 91% of extensions here are.

83%decided within 8 weeks
91%approved
487decided in the last year

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

Public comments

No public comments yet.

Last counted 18 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15019470
Planning Portal ref
PP-15019470
Statutory expiry
18 Aug 2026
Env. assessment
No
Three Rivers
Planning Authority Score
7.3/10
Good
#54 of 296 councils
Relevant to this application:
Householder decisions

Three Rivers is faster than most councils at deciding householder applications, ranking #30 out of 296. Only 24% 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
Three Rivers decision statistics
Based on MHCLG data, the year to March 2026
89%
Overall approval rate
Above avg (87%) #145 of 296
91%
Householder approved
Above avg (90%) #184 of 296
82%
Decided in 8 weeks
Above avg (63%) #30 of 296
24%
Extended time limit
Below avg (41%) #28 of 296
85%
Minor dwellings approved
62 decided (1-9 homes)
63%
Major dwellings approved
8 decided (10+ homes)
94%
Change of use approved
17 decided
819
Total decisions
86 refused in the year to March 2026

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.