MCIAT chartered drawings · Fixed fees across all 33 London boroughs and Essex

Free 2026 London Planning Report — Monken Hadley EN5

Narrow cobbled street of old brick cottages with wisteria, green and blue front doors, lanterns and terracotta pots
EN5 · Monken Hadley · Barnet

Planning and building regulation drawings in Monken Hadley (EN5)

Monken Hadley is a village gathered around Hadley Green and the common. The housing is mostly Georgian and early Victorian, with some earlier fabric and later Victorian villas, and many of the houses are listed. Brick and render frontages, sash windows and long rear gardens are the common thread. Hadley Green Road, Hadley Common, Dury Road and Bakers Hill are among the district's roads.

  • MCIAT chartered technologists
  • London Borough of Barnet granted 82% of 1439 householder applications
  • Drawings in about 7 days

Free Monken Hadley planning assessment

Tell us your EN5 address and project. A fixed quote and a route answer within one working day.

No obligation · No spam · Reply within 1 working day

With many listed houses and a protected village setting, a rear extension or loft here is a more delicate exercise than on a suburban street. The Monken Hadley Conservation Area protects the village setting around the green, and the Wood Street Conservation Area also lies in the district. Barnet's Article 4 direction for Monken Hadley takes away householder permitted development over many of the houses around the green and common, so even modest external works can need planning permission. A new window of a different design, a change of roof covering or a porch can be a planning question, not a quick job.

The long gardens are the other side of the coin. They give a rear extension room to be well proportioned, but the common and surrounding Green Belt limit how far an extension can reach on plots that back onto open land. We start every project here by pinning down the listing, the exact conservation boundary and whether the direction reaches the house, then draw to suit what can actually be consented.

Planning in Monken Hadley: what to know before you apply

Barnet's Monken Hadley Article 4 direction withdraws householder permitted development over many properties around the green and common, so even small external changes to those houses can need planning permission. Independently, conservation-area land removes permitted development for side extensions, roof enlargements and rear extensions of more than one storey. Listed houses also need listed building consent for works affecting their character, internal works included. Green Belt policy bears on extensions at the edge of the common. Barnet also has HMO directions in parts of the borough, which matter only if three to six unrelated people would share. A planning application needs an ownership certificate or notice, not the freeholder's consent.

Applications are decided by London Borough of Barnet — its planning pages.

Check your route

Does your Monken Hadley project need planning permission?

Route check · Monken Hadley (EN5)

Listed building?
Conservation area?
Likely permitted development — no planning applicationNeeds checking
  • A single-storey rear extension up to 4 m deep on a detached house, or 3 m on any other house, is Class A permitted development subject to the height and materials conditions.
  • An Article 4 direction applies here and may withdraw this freedom — the schedule must be checked before relying on it.
  • One or more constraints are unknown — we check the council's registers as part of the free appraisal.
  • Where permitted development applies, a lawful development certificate proves it for lenders and buyers.

Sources: GPDO 2015, Schedule 2, Part 1 · Planning Portal — common projects · Building Regulations 2010 — when approval is needed

This is a first-pass indication from the national rules, not planning advice for your property. Your council's registers, any Article 4 schedule and the exact dimensions decide it — the free appraisal checks all three before we recommend a route.

Confirm it with a free appraisal

Monken Hadley (EN5) in numbers

What London Borough of Barnet has decided, and what EN5 is built of — the two facts that shape every job here.

Householder planning decisions — London Borough of Barnet

Monken Hadley (EN5) applications are decided by London Borough of Barnet; these are its published householder figures for the last four quarters.

Householder applications decided2025 Q2 to 2026 Q11,439
Granted1,183
Refused256
Grantedof 1439 decisions · England 90%82%
Decided within 8 weeksof 1175, excluding prior approvals97%

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Permitted development prior approvals — London Borough of Barnet

How the larger-home-extension route has fared with London Borough of Barnet, which decides EN5 notifications.

Larger home extension prior approvals — not required2024 Q2 to 2026 Q1364
Prior approval granted30
Prior approval refused210
Grantedof 240 determined12%

Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Planning appeals — London Borough of Barnet

Refusals in EN5 can be appealed to the Planning Inspectorate; this is London Borough of Barnet's householder appeal record.

Householder appeals determined2021–2026502
Allowed248
Allowedof 502 · England 36%49%

Source: Planning Inspectorate appeals casework. Open Government Licence v3.0 Extracted 2026-09-22.

Conservation areas and Article 4 directions — London Borough of Barnet

Register counts for London Borough of Barnet. A count describes what the council has published, never a rank against another council.

Conservation areas in the register16 dated, 1968–201116
Article 4 directions in the register15
Areas covered by an Article 4 direction48

Source: MHCLG Planning Data Platform. Open Government Licence v3.0 Extracted 2026-09-22.

What EN5 is built of

Residential building form across Monken Hadley (EN5), from 438 classified buildings — the fact that decides party walls, side returns and loft headroom before any policy does.

Attached on more than one side25%
Attached on one side55%
Detached20%
Median building footprint73 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate1.99
Buildings classified438

Source: Ordnance Survey National Geographic Database (derived statistics). Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Extracted 2026-09-22.

  1. Day 0Measured survey of your Monken Hadley property — or your existing plans if you have them.
  2. About 7 daysDrawings issued for your approval. Free redraws until you are happy.
  3. SubmissionWe validate against London Borough of Barnet’s checklist and submit on your behalf.
  4. Council: 8-week targetHouseholder applications carry an 8-week statutory target. London Borough of Barnet decided 97% of 1175 recent householder applications inside it.

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

FAQ

Monken Hadley (EN5) — FAQs

Are most Monken Hadley houses listed?+
Many are, though not all. Listed status needs checking house by house on the national list. It brings listed building consent on top of planning permission for works affecting the building's character, internal works included.
Can I extend into a long rear garden here?+
Possibly, but not as of right in the conservation area for side or multi-storey rear additions, and where the Article 4 direction covers the house even a single-storey rear extension may need permission. The common and the Green Belt can also limit depth on plots backing onto open land.
Free Fixed Quote

Get your free Monken Hadley planning assessment

Tell us your EN5 address and ambition — feasibility, constraints and a fixed fee within one working day.