2 Sycamore Avenue Hatfield AL10 8LZ Data via plota.co.uk

6/2026/1160/HOUSE - HOUSEHOLDER APPLICATION Approved

Proposal

Raising the roof height and converting the garage into habitable use, installation of a pergola to the rear elevation of the dwelling and alteration to fenestration. Data via plota.co.uk

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View original council record ↗Last checked 12 Sept 2026, 08:55

Application progress

✓

Received

3 Jul 2026

✓

Validated

6 Jul 2026

✓

Approved

25 Aug 2026

Approved on 25 Aug 2026 · Delegated · Last checked 8 Sept 2026

Documents 45

Decision & officer reports 2

PDF Decision Notice_620261160HOUSE.pdf (690 kb) Document · 25 Aug 2026 View ↗ PDF Delegated Report_620261160HOUSE(1).pdf (197 kb) Document · 25 Aug 2026 View ↗

Statements & assessments 1

PDF 1160HOUSE herts ecology_Redacted.pdf (455 kb) Document · 21 Aug 2026 View ↗

Plans & drawings 29

Consultation & comments 10

Site constraints 1

Also on the record

Inside the Hatfield built-up area.

Not affected

Outside flood zones 2 and 3 · Not green belt · No listed building at the site

Checked on 11 September 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.

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Other new applications on this street

12 Jun 2026Withdrawn

17 Sycamore Avenue Hatfield AL10 8LZ

Erection of a part single storey, part two-storey rear extension, garage convers...

6/2026/1031/HOUSE

Nearby new applications

7 Aug 2026Pending

1 High Dells Hatfield AL10 9JD

Prior approval for a single storey rear extension measuring 4.50m in depth, 2.58...

6/2026/1399/PN8

5 Aug 2026Pending

Garages and Former Allotment Site Haseldine Meadows Hatfield AL10 8HB

Submission of details pursuant of condition 1 (construction management plan) on ...

6/2026/1386/COND

30 Jul 2026Pending

71 Briars Lane Hatfield AL10 8EX

Erection of a single storey side extension

6/2026/1336/HOUSE

28 Jul 2026Pending

14 Sparrowhawk Place Hatfield AL10 9UR

T3 Cherry 1m reduction of entire tree. T4 Cherry 1m reduction of entire tree. T5...

6/2026/1320/TPO

13 Jul 2026Approved

57 Briars Lane Hatfield AL10 8EX

Certificate of lawfulness for a proposed loft conversion with the installation o...

6/2026/1219/LAWP

22 Jun 2026Approved

34 Heron Way Hatfield AL10 8QX

Erection of rear/side infill extension with garage conversion

6/2026/1075/HOUSE

Important details

Council: Welwyn Hatfield
Application type: HOUSEHOLDER APPLICATION
Postcode: AL10 8LZ
Received: 3 Jul 2026
Validated: 6 Jul 2026
Parish: Hatfield
Case officer: Show
Decision: Granted
Decision date: 25 Aug 2026
Decision level: Delegated
Applicant: Show
Agent: Show

How this decision compares

Decided in 50 days from validation, 6 days faster than Welwyn Hatfield's median of 56 for extensions. Approved, as 87% of extensions here are.

This one50d

Council56d

UK54d

68%decided within 8 weeks

87%approved

636decided in the last year

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

Public comments

8comments received

14 neighbours consulted · Last counted 8 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Comments by: 23 Aug 2026

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved

12 Sycamore Avenue Hatfield AL10 8LZ

Erection of a first-floor rear extension and single storey front extension

6/2025/2120/HOUSE 16 Dec 2025

2025 Approved

12 Sycamore Avenue Hatfield AL10 8LZ

Erection of a first-floor rear extension and single storey front extension

6/2025/2120/HOUSE 16 Dec 2025

2025 Refused

12 Sycamore Avenue Hatfield AL10 8LZ

Erection of a first-floor rear extension and the extension of the ground floor porch

6/2025/0668/HOUSE 11 Jul 2025

2025 Refused

12 Sycamore Avenue Hatfield AL10 8LZ

Erection of a first-floor rear extension and the extension of the ground floor porch

6/2025/0668/HOUSE 11 Jul 2025

2025 Approved

16 Sycamore Avenue Hatfield AL10 8LZ

Erection of a single storey extension and render finish to existing two storey external w…

6/2025/0789/HOUSE 25 Jun 2025

2025 Approved

16 Sycamore Avenue Hatfield AL10 8LZ

Erection of a single storey extension and render finish to existing two storey external w…

6/2025/0789/HOUSE 25 Jun 2025

2024 Approved

12 Sycamore Avenue AL10 8LZ

Prior approval for the erection of a single storey rear extension measuring 5.9m in depth…

6/2024/2271/PN8 2 Jan 2025

2024 Refused

12 Sycamore Avenue Hatfield AL10 8LZ

Prior approval for the erection of a single storey rear extension measuring 5.9m in depth…

6/2024/2005/PN8 25 Nov 2024

2024 Refused

12 Sycamore Avenue Hatfield AL10 8LZ

Erection of part single, part two storey rear extension

6/2024/1548/HOUSE 9 Oct 2024

2022 Approved

18 Sycamore Avenue Hatfield Hertfordshire AL10 8LZ

Certificate of lawfulness for single storey side extension, replacement of porch roof, al…

6/2022/2646/LAWP 16 Jan 2023

2022 Approved

18 Sycamore Avenue Hatfield Hertfordshire AL10 8LZ

Certificate of lawfulness for single storey side extension, replacement of porch roof, al…

6/2022/2646/LAWP 16 Jan 2023

2022 Approved

9 Sycamore Avenue Hatfield AL10 8LZ

Application for the approval of reserved matters (appearance, means of access, landscapin…

6/2022/1380/RM 28 Sep 2022

2022 Approved

9 Sycamore Avenue Hatfield AL10 8LZ

Application for the approval of reserved matters (appearance, means of access, landscapin…

6/2022/1380/RM 28 Sep 2022

2021 Approved

5 Sycamore Avenue Hatfield AL10 8LZ

Prior approval for the erection of a single storey rear extension measuring 4.5m in depth…

6/2021/0026/PN8 16 Feb 2021

2021 Approved

5 Sycamore Avenue Hatfield AL10 8LZ

Prior approval for the erection of a single storey rear extension measuring 4.5m in depth…

6/2021/0026/PN8 16 Feb 2021

2020 Approved

9 Sycamore Avenue Hatfield AL10 8LZ

Outline permission for the removal of existing bungalow and replacement with 2 x detached…

6/2020/2814/OUTLINE 6 Jan 2021

2020 Approved

9 Sycamore Avenue Hatfield AL10 8LZ

Outline permission for the removal of existing bungalow and replacement with 2 x detached…

6/2020/2814/OUTLINE 6 Jan 2021

2020 Refused

5 Sycamore Avenue Hatfield AL10 8LZ

Prior approval for single storey front extension, and single storey rear extension measur…

6/2020/3081/PN8 23 Dec 2020

2020 Refused

5 Sycamore Avenue Hatfield AL10 8LZ

Prior approval for single storey front extension, and single storey rear extension measur…

6/2020/3081/PN8 23 Dec 2020

2016 Approved

13 Sycamore Avenue, Hatfield, AL10 8LZ

Erection of single storey part two storey rear extension with balcony

6/2016/1540/HOUSE 26 Sep 2016

2016 Approved

13 Sycamore Avenue, Hatfield, AL10 8LZ

Erection of single storey part two storey rear extension with balcony

6/2016/1540/HOUSE 26 Sep 2016

2016 Refused

Land at 18 Sandpiper Close, Hatfield, AL10 9UQ

Pollard oak tree to 3m covered by TPO 546

6/2016/0809/TPO 6 Jun 2016

2016 Refused

Land at 18 Sandpiper Close, Hatfield, AL10 9UQ

Pollard oak tree to 3m covered by TPO 546

6/2016/0809/TPO 6 Jun 2016

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

2 Sycamore Avenue Hatfield AL10 8LZ Data via plota.co.uk

Proposal

Application progress

Documents 45

Decision & officer reports 2

Statements & assessments 1

Plans & drawings 29

Consultation & comments 10

Other documents 3

Site constraints 1

Other new applications on this street

Nearby new applications

Important details

How this decision compares

Public comments

Consultation & key dates

Nearby activity