Architectural drawings in N3

Where in N3 does a drawing package actually get determined?

Every N3 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. N3 fees below are the statutory England rates for 2026, not drawing package estimates.

How does a drawing package differ street by street across N3?

Roof pitch, wall build-up and plot depth change every few N3 streets, and each one changes what a drawing package can achieve at that address.

• Inside N3: Finchley (N3, N12) — drawing package work in Finchley means 1930s semi-detached, edwardian villas. Finchley is 1930s semi-detached, Edwardian villas. Barnet Council decides the Finchley application, and Finchley Central anchors the Finchley location plan.
• Bordering N3: Hampstead Garden Suburb (NW11) — Arts & Crafts garden suburb, conservation defines Hampstead Garden Suburb, where arts & crafts houses, edwardian villas set what a drawing package can do. Any Hampstead Garden Suburb drawing package is validated by Barnet Council, with Central Square the usual Hampstead Garden Suburb reference point on the site plan.
• Bordering N3: Golders Green (NW11) — a drawing package in Golders Green starts from edwardian villas, 1930s semi-detached, and Golders Green reads as Edwardian and 1930s semi-detached. in NW11. Barnet Council assesses Golders Green architectural drawings against its own Golders Green character guidance, and the location plan we draw for Golders Green references Golders Green Hippodrome.
• Bordering N3: Muswell Hill (N10) — a drawing package in Muswell Hill starts from edwardian villas, 1930s semi-detached, and Muswell Hill reads as Edwardian villas and terraces. in N10. Barnet Council assesses Muswell Hill architectural drawings against its own Muswell Hill character guidance, and the location plan we draw for Muswell Hill references Alexandra Palace.
• Bordering N3: Hendon (NW4) — 1930s semi-detached, post-war flats defines Hendon, where 1930s semi-detached, post-war flats set what a drawing package can do. Any Hendon drawing package is validated by Barnet Council, with RAF Museum the usual Hendon reference point on the site plan.
• Bordering N3: Mill Hill (NW7) — Georgian and 1930s detached defines Mill Hill, where georgian villas, 1930s detached and semi-detached set what a drawing package can do. Any Mill Hill drawing package is validated by Barnet Council, with Mill Hill Village the usual Mill Hill reference point on the site plan.
• Bordering N3: Edgware (HA8) — a drawing package in Edgware starts from 1930s semi-detached, post-war flats, and Edgware reads as 1930s semi-detached, post-war flats. in HA8. Barnet Council assesses Edgware architectural drawings against its own Edgware character guidance, and the location plan we draw for Edgware references Edgware Tube.
• Bordering N3: Colindale (NW9) — drawing package work in Colindale means post-war flats, new-build. Colindale is post-war flats, new-build. Barnet Council decides the Colindale application, and Colindale station anchors the Colindale location plan.
• Bordering N3: Whetstone (N20) — a drawing package in Whetstone starts from 1930s semi-detached, edwardian villas, and Whetstone reads as 1930s semi-detached, Edwardian villas. in N20. Barnet Council assesses Whetstone architectural drawings against its own Whetstone character guidance, and the location plan we draw for Whetstone references Totteridge & Whetstone.
• Bordering N3: East Finchley (N2) — Edwardian terraces, 1930s semi-detached defines East Finchley, where edwardian terraces, 1930s semi-detached set what a drawing package can do. Any East Finchley drawing package is validated by Barnet Council, with Phoenix Cinema the usual East Finchley reference point on the site plan.

What local planning policy applies to a drawing package in N3?

Conservation areas covering N3 (Finchley Central): Barnet Council runs 20, and Mill Hill, Hendon, Golders Green are the ones N3 (Finchley Central) owners meet most. A drawing package inside a N3 (Finchley Central) conservation area loses permitted development, so the N3 (Finchley Central) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Golders Green a drawing package is judged on the street elevation first.

N3 (Finchley Central) permitted development status: there is no borough-wide direction from Barnet Council, so a drawing package at a N3 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a N3 (Finchley Central) sale to argue it later.

The building fabric around N3 (Finchley Central): 1930s semi-detached dominates; Edwardian villas in Muswell Hill, Finchley; Garden Suburb Arts & Crafts in Hampstead Garden Suburb; post-war flats in Colindale. Suburban outer-London borough; permitted development used heavily; Hampstead Garden Suburb has its own residents' trust with additional design controls. A drawing package in N3 (Finchley Central) is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Barnet Council.

Which neighbouring authorities border N3?

• Camden — the Camden boundary runs against Barnet, so a drawing package a street from N3 (Finchley Central) is decided by Camden Council instead. Camden runs 40 conservation areas across NW1 and its neighbours, which is why architectural drawings priced for N3 (Finchley Central) are re-checked against Camden policy whenever the N3 (Finchley Central) address sits on that edge.
• Haringey — adjoining N3 (Finchley Central), with 29 conservation areas centred on N4. A drawing package on the far side of the N3 (Finchley Central) line is determined by Haringey Council, so the N3 (Finchley Central) quote for architectural drawings is checked against Haringey guidance before it is issued.
• Enfield — the Enfield boundary runs against Barnet, so a drawing package a street from N3 (Finchley Central) is decided by Enfield Council instead. Enfield runs 22 conservation areas across EN1 and its neighbours, which is why architectural drawings priced for N3 (Finchley Central) are re-checked against Enfield policy whenever the N3 (Finchley Central) address sits on that edge.
• Harrow — the Harrow boundary runs against Barnet, so a drawing package a street from N3 (Finchley Central) is decided by Harrow Council instead. Harrow runs 29 conservation areas across HA1 and its neighbours, which is why architectural drawings priced for N3 (Finchley Central) are re-checked against Harrow policy whenever the N3 (Finchley Central) address sits on that edge.

Sources for this N3 drawing package page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.