Colindale / Kingsbury — covered by Barnet Council.
Planning permission drawings delivered by an MCIAT chartered team.
Building regulations drawings delivered by an MCIAT chartered team.
Loft conversion drawings delivered by an MCIAT chartered team.
House extension drawings delivered by an MCIAT chartered team.
Mansard roof extensions delivered by an MCIAT chartered team.
Garage conversion drawings delivered by an MCIAT chartered team.
Basement conversion drawings delivered by an MCIAT chartered team.
Structural calculations delivered by an MCIAT chartered team.
Measured building survey delivered by an MCIAT chartered team.
Party wall services delivered by an MCIAT chartered team.
Rear dormer drawings delivered by an MCIAT chartered team.


NW9 primarily covers Colindale / Kingsbury in Barnet. It also touches Brent.
Decisions for NW9 are made by Barnet Council. Standard Permitted Development rules apply for most rear extensions and loft conversions on terraced and semi-detached houses, unless the property is in a conservation area, is listed, or sits under an Article 4 Direction. Article 4 in Barnet: No.
Building regs from £950. We do not charge hourly. Free site survey across all NW9 addresses.
From first call to planning decision: typically 12–14 weeks. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination. Barnet Council timelines align with the national norm.
Colindale / Kingsbury in NW9 is characterised by the housing stock of Barnet — broadly 1930s semi-detached dominates.

Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
Every NW9 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. NW9 fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| NW9 | Colindale / Kingsbury | Post-war flats, new-build | Colindale / Kingsbury is split at NW9. Either Barnet Council or Brent Council can determine a drawing package here, so the NW9 address is checked against both policies maps first. |
| NW9 | Colindale | Post-war flats, new-build | Colindale sits inside NW9; drawing package proposals here are determined by Barnet Council. |
| N2 | East Finchley | Edwardian terraces, 1930s semi-detached | Adjoining district to NW9, also inside Barnet for drawing package purposes. |
| N3 | Finchley Central | 1930s semi-detached, Edwardian villas | Adjoining district to NW9, also inside Barnet for drawing package purposes. |
| N11 | New Southgate / Bounds Green | mixed stock | Adjoining district to NW9, also inside Barnet for drawing package purposes. |
| N12 | North Finchley / Woodside Park | 1930s semi-detached, Edwardian villas | Adjoining district to NW9, also inside Barnet for drawing package purposes. |
| NW2 | Cricklewood / Neasden | Edwardian villas and terraces | Adjoining district to NW9, also inside Brent for drawing package purposes. |
| NW10 | Willesden / Harlesden / Kensal Green | Modern apartments, post-war estates | Adjoining district to NW9, also inside Brent for drawing package purposes. |
| HA0 | Wembley / Sudbury | 1930s semi-detached, new-build | Adjoining district to NW9, also inside Brent for drawing package purposes. |
| HA9 | Wembley / Wembley Park | 1930s semi-detached, new-build | Adjoining district to NW9, also inside Brent for drawing package purposes. |
Roof pitch, wall build-up and plot depth change every few NW9 streets, and each one changes what a drawing package can achieve at that address.
How designation changes a NW9 (Colindale / Kingsbury) drawing package: Barnet Council maintains 20 conservation areas, including Monken Hadley, Hampstead Garden Suburb, Mill Hill. Inside any of them a NW9 (Colindale / Kingsbury) drawing package cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Monken Hadley sets the tone for NW9 (Colindale / Kingsbury) casework.
Article 4 and your NW9 (Colindale / Kingsbury) drawing package: Barnet Council has made no borough-wide direction, so permitted development for a drawing package in NW9 (Colindale / Kingsbury) generally survives outside NW9 (Colindale / Kingsbury) conservation areas and listed curtilages. A Lawful Development Certificate at £274 is how a NW9 owner records that a drawing package was lawful.
NW9 (Colindale / Kingsbury) housing stock: 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. Read that before choosing a drawing package route in NW9 (Colindale / Kingsbury) — construction, not postcode, sets what is achievable. Barnet Council charges £548 for a householder application and has 8 weeks to determine it.
How designation changes a NW9 (Colindale / Kingsbury) drawing package: Brent Council maintains 22 conservation areas, including Sudbury Court, Queen's Park, Mapesbury. Inside any of them a NW9 (Colindale / Kingsbury) drawing package cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Sudbury Court sets the tone for NW9 (Colindale / Kingsbury) casework.
Article 4 and your NW9 (Colindale / Kingsbury) drawing package: Article 4 for HMO conversions in specific streets around Wembley and Harlesden. At a NW9 address that matters twice over, because Brent Council applies the direction unevenly across NW9 (Colindale / Kingsbury) — we read the NW9 (Colindale / Kingsbury) policies map for the exact NW9 address before quoting architectural drawings.
NW9 (Colindale / Kingsbury) housing stock: Edwardian villas in Queen's Park and Mapesbury; Victorian terraces in Kilburn and Harlesden; 1930s semi-detached in Wembley; post-war tower blocks in Church End. Highly diverse borough; Queen's Park and Mapesbury are heritage-controlled; Wembley is a major regeneration hub. Read that before choosing a drawing package route in NW9 (Colindale / Kingsbury) — construction, not postcode, sets what is achievable. Brent Council charges £548 for a householder application and has 8 weeks to determine it.
Sources for this NW9 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.
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