31 Brockswood Lane Welwyn Garden City AL8 7BE Data via plota.co.uk

6/2026/1361/EM - ESTATE MANAGEMENT Approved
Extensions & alterationsUtility infrastructure

Proposal

Erection of part single storey part two storey rear extension, garage conversion and installation of air conditioning unit mounted at ground floor on the rear elevation Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
3 Aug 2026
✓
Validated
11 Aug 2026
✓
Approved
29 Sept 2026

Approved on 29 Sept 2026 · Delegated · Last checked 29 Sept 2026

Documents 14

Decision & officer reports 2

PDF Decision Notice_620261361EM.pdf (668 kb) Document · 29 Sept 2026 View ↗ PDF Delegated Report_620261361EM.pdf (175 kb) Document · 29 Sept 2026 View ↗

Statements & assessments 2

PDF B332047_HH_Planning_Flood Risk Assessment.pdf (343 kb) Document · 3 Aug 2026 View ↗ PDF B332047_HH_Planning_DAS and Heritage Statement_Redacted.pdf (4200 kb) Document · 3 Aug 2026 View ↗

Plans & drawings 6

PDF B332047-3100 B Proposed Drawings(1).pdf (1009 kb) Document · 25 Sept 2026 View ↗ PDF B332047_HH_Planning_Architectural Drawings_RevA (1).pdf (1413 kb) Document · 15 Sept 2026 View ↗ PDF B332047_HH_Planning_Block Plans.pdf (170 kb) Document · 3 Aug 2026 View ↗ PDF B332047_HH_Planning_Architectural Drawings_Part1.pdf (535 kb) Document · 3 Aug 2026 View ↗ PDF B332047_HH_Planning_Architectural Drawings_Part2.pdf (1200 kb) Document · 3 Aug 2026 View ↗ PDF B332047_HH_Planning_Location Plan.pdf (1028 kb) Document · 3 Aug 2026 View ↗

Other documents 4

PDF B332047_HH_Planning_Site Photos_Redacted.pdf (6433 kb) Document · 3 Aug 2026 View ↗ PDF 2MXM-A_Data-books_EEDEN22_English.pdf (4630 kb) Document · 3 Aug 2026 View ↗ PDF 3MXM40-68M2V1B_Databook_EEDEN16_tcm219-418405.pdf (3990 kb) Document · 3 Aug 2026 View ↗ PDF FDXM-F9_RXM-R_Datasheet_1022B_.pdf (303 kb) Document · 3 Aug 2026 View ↗

All documents on the council site ↗

Site constraints 6

Welwyn Garden City 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.
Council document ↗
Local nature reserve 100 m away: Sherrardspark Wood
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.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
SSSI 100 m away: Sherrardspark Wood SSSI
Natural England may need consulting, depending on what is proposed.
Sites of special scientific interest are the best wildlife and geological sites in the country. Development likely to harm one is rarely permitted.
Also on the record
Radon affected area, class 2; Inside the Welwyn Garden City built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No listed building 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 4

Last sold for £740,000 in February 2022. Semi-detached house, leasehold.

1 February 2022£740,000
25 November 2016£595,000
6 December 2010£415,000
8 June 1998£175,000

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

Building

Floor area109 m² (1,173 sq ft)
Energy ratingD (60 out of 100), could reach B
PropertySemi-detached house, 6 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in April 2021, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

16 Jul 2026Approved

29 Brockswood Lane, Welwyn Garden City, AL8 7BE

Garage alterations including replacing roof, installation of doors and rendering...

6/2026/1253/EM
27 Apr 2026Approved

43 Brockswood Lane Welwyn Garden City AL8 7BE

Erection of garage/garden office following the demolition of the existing garage

6/2026/0742/EM
21 Sept 2026Pending

76 Brockswood Lane Welwyn Garden City AL8 7BQ

T1 - Ash tree - 2-3 crown reduction, remove deadwood T2 - Oak tree - 2-3m crown ...

6/2026/1640/TC
19 Aug 2026Pending

14 Brockswood Lane Welwyn Garden City AL8 7BG

Fitting an air-to-air heat pump on a rear wall

6/2026/1460/EM

Nearby new applications

1 Oct 2026Pending

49 Valley Road Welwyn Garden City AL8 7DH

1 x Robinia to reduce branches that are dying by 2m to clear die back due to upp...

6/2026/1745/EMT
25 Sept 2026Pending

74 Valley Road Welwyn Garden City AL8 7DP

Removal of front hedgerow and replace with planted flowers

6/2026/1697/EM
21 Sept 2026Pending

10 Handside Green Welwyn Garden City AL8 6SQ

Erection of a shed at read garden, replace rear garden gate and fencing and remo...

6/2026/1653/EM
21 Sept 2026Pending

76 Brockswood Lane Welwyn Garden City AL8 7BQ

T1 - Ash tree - 2-3 crown reduction, remove deadwood T2 - Oak tree - 2-3m crown ...

6/2026/1640/TC
21 Sept 2026Pending

76 Brockswood Lane Welwyn Garden City AL8 7BQ

T1 - Ash tree - 2-3 crown reduction, remove deadwood T2 - Oak tree - 2-3m crown ...

6/2026/1654/EMT
17 Sept 2026Pending

39 High Oaks Road Welwyn Garden City AL8 7BT

2 x Apples to reduce by approximately 4ft height and width. Thin outer canopy by...

6/2026/1618/TC

Important details

Council
Welwyn Hatfield
Application type
ESTATE MANAGEMENT
Postcode
AL8 7BE
Received
3 Aug 2026
Validated
11 Aug 2026
Case officer
Show
Decision
Granted
Decision date
29 Sept 2026
Decision level
Delegated
Applicant
Show
Agent
Jordan Macann

How this decision compares

Decided in 49 days from validation, 7 days faster than Welwyn Hatfield's median of 56 for extensions. Approved, as 88% of extensions here are.

69%decided within 8 weeks
88%approved
688decided in the last year

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

Consultation & key dates

Comments by
11 Sept 2026

Historical activity at this location

30 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2018 Approved
Reduce 1 x Lawson Cypress tree by up to 30% to the level of Yew hedge
6/2018/1213/EM
2018 Approved
Reduce level of 1 x Lawson Cypress tree by up to 30% to reduce to the level of Yew hedge…
6/2018/1181/TPO
2017 Approved
Erection of a single storey rear extension
6/2017/1528/EM
2017 Approved
1 x Ash to fell to ground level and replant
6/2017/0427/EM
2017 Approved
1 x Ash to Fell to ground level and replant - Conservation Area
6/2017/0424/TPO
Within ~100m

Nearby activity

2025 Approved
50 Brockswood Lane Welwyn Garden City AL8 7BG
Replacement of old roof tiles with as close a match as possible to the existing tiles
6/2025/2161/EM
2025 Approved
50 Brockswood Lane Welwyn Garden City AL8 7BG
Replacement of old roof tiles with as close a match as possible to the existing tiles
6/2025/2161/EM
2025 Approved
23 Brockswood Lane Welwyn Garden City AL8 7BE
1 x Silver birch to remove in sections to ground level. removing as crown declining with…
6/2025/1938/TC
2025 Approved
23 Brockswood Lane Welwyn Garden City AL8 7BE
1 x Silver birch to fell. 1 x Apple to reduce by approximately 1.2m height and width
6/2025/1934/EMT
2025 Approved
23 Brockswood Lane Welwyn Garden City AL8 7BE
1 x Silver birch to remove in sections to ground level. removing as crown declining with…
6/2025/1938/TC
2025 Approved
23 Brockswood Lane Welwyn Garden City AL8 7BE
1 x Silver birch to fell. 1 x Apple to reduce by approximately 1.2m height and width
6/2025/1934/EMT
2025 Approved
Dellcott Tennis Club Dognell Green Welwyn Garden City AL8 7BL
2 x Lawson cypress to remove to ground level (by court 1).
6/2025/1003/TC
2025 Approved
Dellcott Tennis Club Dognell Green Welwyn Garden City AL8 7BL
2 x Lawson cypress to remove to ground level (by court 1).
6/2025/1003/TC
2025 Approved
9 High Oaks Road Welwyn Garden City AL8 7BJ
1 x Sycamore in the Garden of 9 High Oaks Road - to reduce back lateral branches growing…
6/2025/0976/EMT
2025 Approved
9 High Oaks Road Welwyn Garden City AL8 7BJ
1 x Sycamore in the Garden of 9 High Oaks Road - to reduce back lateral branches growing…
6/2025/0976/EMT
2025 Approved
7 High Oaks Road Welwyn Garden City AL8 7BJ
Reduce 1 x Sycamore by cutting lateral branches by 2.5m
6/2025/0977/EMT
2025 Approved
7 High Oaks Road Welwyn Garden City AL8 7BJ
Reduce 1 x Sycamore by cutting lateral branches by 2.5m
6/2025/0977/EMT
2025 Approved
9 High Oaks Road Welwyn Garden City AL8 7BJ
1 x Sycamore in the Garden of 9 High Oaks Road - to reduce back lateral branches growing…
6/2025/0973/TC
2025 Approved
9 High Oaks Road Welwyn Garden City AL8 7BJ
1 x Sycamore in the Garden of 9 High Oaks Road - to reduce back lateral branches growing…
6/2025/0973/TC
2025 Approved
7 High Oaks Road Welwyn Garden City AL8 7BJ
Reduce 1 x Sycamore by cutting lateral branches by 2.5m
6/2025/0974/TC
2025 Approved
7 High Oaks Road Welwyn Garden City AL8 7BJ
Reduce 1 x Sycamore by cutting lateral branches by 2.5m
6/2025/0974/TC
2025 Approved
48 Brockswood Lane Welwyn Garden City AL8 7BG
Replacement of wooden shed/garden store
6/2025/0804/EM
2025 Approved
48 Brockswood Lane Welwyn Garden City AL8 7BG
Replacement of wooden shed/garden store
6/2025/0804/EM
2025 Approved
23 Brockswood Lane Welwyn Garden City AL8 7BE
T1 Silver birch fell to ground level due to severe dieback in crown and fungus around bas…
6/2025/0578/TC
2025 Approved
23 Brockswood Lane Welwyn Garden City AL8 7BE
T1 Silver birch fell to ground level due to severe dieback in crown and fungus around bas…
6/2025/0578/TC
2016 Approved
46 Brockswood Lane, Welwyn Garden City, AL8 7BG
Laburnum tree (L1) - crown reduction by 20% - Conservation Area
6/2016/1887/TPO
2016 Approved
48 Brockswood Lane, Welwyn Garden City, AL8 7BG
Erection of summer house
6/2016/1702/EM
2016 Approved
48 Brockswood Lane, Welwyn Garden City, AL8 7BG
Erection of summer house
6/2016/1702/EM
2016 Approved
52 Brockswood Lane, Welwyn Garden City, AL8 7BG
Planting of a 1m. high hornbeam hedge partially along the front border of the property
6/2016/0389/EM
2016 Approved
52 Brockswood Lane, Welwyn Garden City, AL8 7BG
Planting of a 1m. high hornbeam hedge partially along the front border of the property
6/2016/0389/EM
Welwyn Hatfield
Planning Authority Score
2.1/10
Poor
#272 of 296 councils
Relevant to this application:
Householder decisions

Welwyn Hatfield is slower than most councils at deciding householder applications, ranking #224 out of 296. 50% of applications have the time limit extended, above the 41% national average. Householder applications are slightly less likely to be approved here (86%) 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
Welwyn Hatfield decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #200 of 296
86%
Householder approved
Below avg (90%) #246 of 296
53%
Decided in 8 weeks
Below avg (63%) #224 of 296
50%
Extended time limit
Above avg (41%) #229 of 296
84%
Minor dwellings approved
63 decided (1-9 homes)
83%
Major dwellings approved
12 decided (10+ homes)
73%
Change of use approved
22 decided
633
Total decisions
87 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

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

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.