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

6/2026/1031/HOUSE - HOUSEHOLDER APPLICATION Withdrawn

Proposal

Erection of a part single storey, part two-storey rear extension, garage conversion, front porch extension, alterations to fenestration and external materials Data via plota.co.uk

View original council record ↗Last checked

Application progress

Received
12 Jun 2026
Withdrawn
30 Jul 2026

Withdrawn on 30 Jul 2026 · Delegated · Last checked 8 Sept 2026

Documents 27

Plans & drawings 21

PDF 25116_ED-01_EXISTING BLOCK PLAN.pdf (359 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-01_PROPOSED BLOCK PLAN.pdf (363 kb) Document · 12 Jun 2026 View ↗ PDF LocationPlan.pdf (446 kb) Document · 12 Jun 2026 View ↗ PDF 25116_ED-02_EXISTING GROUND FLOOR PLAN.pdf (1030 kb) Document · 12 Jun 2026 View ↗ PDF 25116_ED-03_EXISTING FIRST FLOOR PLAN.pdf (972 kb) Document · 12 Jun 2026 View ↗ PDF 25116_ED-04_EXISTING ROOF PLAN.pdf (866 kb) Document · 12 Jun 2026 View ↗ PDF 25116_ED-05_EXISTING EAST FRONT ELEVATION.pdf (667 kb) Document · 12 Jun 2026 View ↗ PDF 25116_ED-06_EXISTING WEST REAR ELEVATION.pdf (648 kb) Document · 12 Jun 2026 View ↗ PDF 25116_ED-07_EXISTING SOUTH SIDE-1 ELEVATION.pdf (495 kb) Document · 12 Jun 2026 View ↗ PDF 25116_ED-08_EXISTING NORTH SIDE-2 ELEVATION.pdf (498 kb) Document · 12 Jun 2026 View ↗ PDF 25116_ED-09_EXISTING SECTION A-A.pdf (523 kb) Document · 12 Jun 2026 View ↗ PDF 25116_ED-10_EXISTING SECTION B-B.pdf (590 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-02_PROPOSED GROUND FLOOR PLAN.pdf (1222 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-03_PROPOSED FIRST FLOOR PLAN.pdf (1281 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-04_PROPOSED ROOF PLAN.pdf (1131 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-05_PROPOSED EAST FRONT ELEVATION.pdf (728 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-06_PROPOSED WEST REAR ELEVATION.pdf (624 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-07_PROPOSED SOUTH SIDE-1 ELEVATION.pdf (606 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-08_PROPOSED NORTH SIDE-2 ELEVATION.pdf (643 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-09_PROPOSED SECTION A-A.pdf (598 kb) Document · 12 Jun 2026 View ↗ PDF 25116_PD-10_PROPOSED SECTION B-B.pdf (605 kb) Document · 12 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 3

Also on the record
1 listed building within 150 m; Inside the Hatfield built-up area; Priority habitat 27 m away: Deciduous woodland.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument 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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Important details

Application type
HOUSEHOLDER APPLICATION
Postcode
AL10 8LZ
Received
12 Jun 2026
Validated
12 Jun 2026
Parish
Hatfield
Case officer
Show
Decision
Withdrawn
Decision date
30 Jul 2026
Decision level
Delegated
Applicant
Show

Public comments

1comment received

6 neighbours consulted · Last counted 8 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Comments by
29 Jul 2026
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