Planning drawings in Hertsmere, £895 fixed

What is the householder approval rate in Hertsmere?

Hertsmere Borough Council granted 410 of 454 householder decisions (90.3%) 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 Hertsmere Borough Council need to validate an application?

• The council points applicants to the national validation requirements; it lists a fully completed form, the correct ownership certificate and the fee, and plans to a recognised metric scale with a scale bar, supplied as PDFs. (source)
• A completed Community Infrastructure Levy additional information form where necessary. (source)
• In the Shenley Neighbourhood Plan area, a completed Shenley Plan Code Compliance Checklist showing how the proposal meets the neighbourhood plan. (source)

Article 4 directions in Hertsmere

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.

• Radlett bungalows. Directions on named bungalows in Theobald Street, Williams Way, Faggots Close, Craigweil Avenue, Newberries Avenue, Gills Hill Lane, Goodyers Avenue, Links Drive and The Close remove rights including adding storeys (Part 1 Class AA); two were modified by the Secretary of State on 14 June 2023 and a further one confirmed on 12 June 2024. (source)
• Conservation areas and individual properties. The council lists directions in Borehamwood, Bushey (including Warren Road and The Comyns, Bushey Heath), Elstree, Letchmore Heath, Potters Bar (The Royds Estate), Radlett and Shenley; each removes different rights, set out in the direction itself. (source)
• Houses in multiple occupation, Potters Bar. Confirmed on 12 August 2026 for the Parkfield, Oakmere, Furzefield and Bentley Heath & The Royds wards; from 6 May 2027 turning a house into a small HMO needs permission. (source)

The council says there are 15 conservation areas in Hertsmere, including Elstree Village, Radlett North and South, Shenley, South Mimms, The Royds in Potters Bar and Bushey High Street. (source)

How long does a planning decision take in Hertsmere?

Eight weeks is the statutory period for a householder application. Of the 246 householder planning applications Hertsmere decided from 1 July 2025 to 30 June 2026, excluding prior approvals, 224 (91.1%) were decided within eight weeks.

• Householder pre-application advice costs £230.40 including VAT in writing, or £374.40 with a meeting (April 2025 fee schedule, the one the council links on 14 October 2026); heritage advice is a separate bespoke fee. (source)
• The council warns that applications submitted without pre-application discussion that need significant amendments are likely to be refused. (source)

Design guidance: Planning and Design Guide Part D (draft, October 2016, for interim development management use from September 2016). Extensions should not cross a 45-degree line from the nearest habitable-room window next door (kitchens included); dormers sit at least 0.3m below the ridge and above the eaves and 0.5m in from the side walls.

Other local costs and documents in Hertsmere

• Since 15 June 2026 the council has been designated under section 62A for its handling of major applications; it still decides householder applications as normal. (source)
• The council's Parking Standards SPD applies to householder extensions as well as larger schemes. (source)

Planning and building regulations drawings in Hertsmere

The same published prices apply in Hertsmere as everywhere we work.

• fixed-fee planning drawings: £895, survey to submission, with the council fee paid separately.
• full plans drawings for building control: £795, drawn to the Approved Documents once planning is settled.
• check what a loft conversion needs: 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

Hertsmere shares a boundary with three council areas 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.