Planning drawings in Welwyn Hatfield, £895 fixed

What is the householder approval rate in Welwyn Hatfield?

Welwyn Hatfield Borough Council granted 373 of 433 householder decisions (86.1%) from 1 July 2025 to 30 June 2026, counting householder planning applications and larger home extension prior approvals together. Across London the same measure was 85.8% (20,556 of 23,967). Source: MHCLG live table PS2, district planning application statistics, 1 July 2025 to 30 June 2026. See the other Hertfordshire councils on the Hertfordshire planning page.

What does Welwyn Hatfield Borough Council need to validate an application?

• Floor plans and elevations at 1:50 or 1:100, each titled and numbered, showing paper size and dimensions or a horizontal and vertical scale bar; drawings marked "Do Not Scale" are not accepted (householder local list adopted 7 December 2017). (source)
• Elevations must show every side, blank ones included, and where an extension adjoins or sits close to another building, the relationship between them and the windows on each. (source)
• Sections and floor levels (contours, spot levels or sections) wherever the work changes ground levels. (source)
• A parking plan where the work changes parking needs or loses a space, showing hard and soft landscaping, how hardstanding drains, and that any garage is big enough for a car under the Interim Parking Standards (November 2014). (source)
• In most of Welwyn Garden City, changes to a home or garden may also need Estate Management Scheme consent, a separate application with its own validation checklist. (source)

Article 4 directions in Welwyn Hatfield

An Article 4 direction removes permitted development rights, so work that needs no application elsewhere needs one here. Check yours with the permitted development checker.

• Houses in multiple occupation, Hatfield. Confirmed in April 2011: turning a house into an HMO in Hatfield needs planning permission, judged against the council's HMO SPD. (source)
• Additional storeys, Hatfield. Confirmed June 2022 (boundary modified by the Secretary of State on 18 October 2022): removes the right to add storeys to existing blocks of flats. (source)
• Green Belt plots: Vineyards Road, Northaw and Digswell Park Road. Remove rights for fences, new accesses and temporary uses on land sold as plots. (source)
• Employment sites. Confirmed 2020 and 2022: remove office-to-residential and demolition-and-rebuild rights on named employment areas. They do not affect houses. (source)

The council lists 10 conservation areas, including Welwyn Garden City town centre, the Beehive area, Peartree, Lemsford, Old Hatfield, Welwyn village and Northaw. (source)

How long does a planning decision take in Welwyn Hatfield?

Eight weeks is the statutory period for a householder application. Of the 240 householder planning applications Welwyn Hatfield decided from 1 July 2025 to 30 June 2026, excluding prior approvals, 225 (93.8%) were decided within eight weeks.

• From 1 April 2026, detailed written householder pre-application advice costs £223, or £383 with a meeting of up to an hour; heritage advice with a meeting is £321, or £704 combined with planning advice (all including VAT). (source)
• Consultees have 21 days to reply; most applications are decided by officers rather than the Development Management Committee. (source)

Design guidance: Welwyn Garden City Estate Management Scheme Design Guide. The scheme covers most of Welwyn Garden City and protects the town's environment and heritage; its design guide explains which changes to homes and gardens need consent.

Other local costs and documents in Welwyn Hatfield

• The Welwyn Hatfield Local Plan 2016 to 2036 was adopted on 12 October 2023, replacing the saved policies of the 2005 District Plan. (source)
• The council is consulting on its new Local Plan Proposed Submission document (Regulation 19) from 23 September to 5 November 2026. (source)

Planning and building regulations drawings in Welwyn Hatfield

The same published prices apply in Welwyn Hatfield as everywhere we work.

• our Welwyn Hatfield planning drawings team: £895, survey to submission, with the council fee paid separately.
• see what building control will check: £795, drawn to the Approved Documents once planning is settled.
• loft conversion plans: volume limits, dormers and the building regulations a loft conversion triggers.

Where your work is permitted development, a certificate of lawfulness starts at £950. Not sure which applies? Read do I need planning permission? first.

Neighbouring councils

Welwyn Hatfield shares a boundary with one council area where we publish the same council data. Each has its own approval rate, validation checklist and Article 4 areas, so check which council your address falls under before relying on any one page.

Council facts checked 14 October 2026.