Architectural drawings in TN16

Which postcode districts around TN16 do we cover for drawing package work?

Every TN16 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. TN16 fees below are the statutory England rates for 2026, not drawing package estimates.

What changes about a drawing package in each part of TN16?

Roof pitch, wall build-up and plot depth change every few TN16 streets, and each one changes what a drawing package can achieve at that address.

• Inside TN16: Biggin Hill (TN16) — 1930s semi-detached, rural fringe defines Biggin Hill, where 1930s semi-detached set what a drawing package can do. Any Biggin Hill drawing package is validated by Bromley Council, with Biggin Hill Airport the usual Biggin Hill reference point on the site plan.
• Bordering TN16: Bromley (BR1, BR2) — a drawing package in Bromley starts from victorian terraces, edwardian villas, post-war flats, and Bromley reads as Victorian and Edwardian centre. in BR1. Bromley Council assesses Bromley architectural drawings against its own Bromley character guidance, and the location plan we draw for Bromley references Bromley High Street.
• Bordering TN16: Beckenham (BR3) — a drawing package in Beckenham starts from edwardian villas, 1930s semi-detached, and Beckenham reads as Edwardian villas, 1930s semi-detached. in BR3. Bromley Council assesses Beckenham architectural drawings against its own Beckenham character guidance, and the location plan we draw for Beckenham references Beckenham Junction.
• Bordering TN16: Chislehurst (BR7) — drawing package work in Chislehurst means 1930s detached, edwardian villas. Chislehurst is Large 1930s detached, conservation. Bromley Council decides the Chislehurst application, and Chislehurst Caves anchors the Chislehurst location plan.
• Bordering TN16: Bickley (BR1) — drawing package work in Bickley means 1930s detached, edwardian villas. Bickley is 1930s detached, conservation. Bromley Council decides the Bickley application, and Bickley station anchors the Bickley location plan.
• Bordering TN16: Orpington (BR5, BR6) — 1930s semi-detached, post-war defines Orpington, where 1930s semi-detached set what a drawing package can do. Any Orpington drawing package is validated by Bromley Council, with Orpington High Street the usual Orpington reference point on the site plan.
• Bordering TN16: Petts Wood (BR5) — a drawing package in Petts Wood starts from 1930s semi-detached, and Petts Wood reads as 1930s semi-detached, garden suburb. in BR5. Bromley Council assesses Petts Wood architectural drawings against its own Petts Wood character guidance, and the location plan we draw for Petts Wood references Petts Wood station.
• Bordering TN16: West Wickham (BR4) — 1930s semi-detached defines West Wickham, where 1930s semi-detached set what a drawing package can do. Any West Wickham drawing package is validated by Bromley Council, with West Wickham station the usual West Wickham reference point on the site plan.
• Bordering TN16: Keston (BR2) — a drawing package in Keston starts from edwardian villas, 1930s semi-detached, and Keston reads as Edwardian and 1930s village. in BR2. Bromley Council assesses Keston architectural drawings against its own Keston character guidance, and the location plan we draw for Keston references Keston Ponds.
• Bordering TN16: Penge (SE20) — a drawing package in Penge starts from victorian and edwardian terraces, and Penge reads as Victorian and Edwardian terraces. in SE20. Bromley Council assesses Penge architectural drawings against its own Penge character guidance, and the location plan we draw for Penge references Penge East station.

Does TN16 planning policy restrict a drawing package?

How designation changes a TN16 (Biggin Hill / Downe) drawing package: Bromley Council maintains 48 conservation areas, including Keston, Bickley, Bromley Town. Inside any of them a TN16 (Biggin Hill / Downe) 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. Keston sets the tone for TN16 (Biggin Hill / Downe) casework.

TN16 (Biggin Hill / Downe) permitted development status: there is no borough-wide direction from Bromley Council, so a drawing package at a TN16 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a TN16 (Biggin Hill / Downe) sale to argue it later.

What TN16 (Biggin Hill / Downe) is built from: Large 1930s detached and semi-detached in Chislehurst and Bickley; Edwardian in Beckenham; Victorian in Bromley town; Metropolitan Green Belt covers significant rural-fringe land. Largest London borough by area; substantial Green Belt; conservation areas in most town centres; generally permissive elsewhere. That mix decides the drawing package route in TN16 (Biggin Hill / Downe) more than the postcode does, and it is what a Bromley Council case officer reads first. A householder application costs £548 paid to Bromley Council direct, with 8 weeks to a decision once validated.

Which neighbouring authorities border TN16?

• Bexley — cross the TN16 (Biggin Hill / Downe) boundary and Bexley Council takes the drawing package instead, applying 16 conservation areas of its own around DA1. We re-price architectural drawings at the TN16 (Biggin Hill / Downe) edge because Bexley policy and Bromley policy rarely align on drawing package depth.
• Croydon — cross the TN16 (Biggin Hill / Downe) boundary and Croydon Council takes the drawing package instead, applying 24 conservation areas of its own around CR0. We re-price architectural drawings at the TN16 (Biggin Hill / Downe) edge because Croydon policy and Bromley policy rarely align on drawing package depth.
• Southwark — the Southwark boundary runs against Bromley, so a drawing package a street from TN16 (Biggin Hill / Downe) is decided by Southwark Council instead. Southwark runs 43 conservation areas across SE1 and its neighbours, which is why architectural drawings priced for TN16 (Biggin Hill / Downe) are re-checked against Southwark policy whenever the TN16 (Biggin Hill / Downe) address sits on that edge.
• Lewisham — cross the TN16 (Biggin Hill / Downe) boundary and Lewisham Council takes the drawing package instead, applying 30 conservation areas of its own around SE3. We re-price architectural drawings at the TN16 (Biggin Hill / Downe) edge because Lewisham policy and Bromley policy rarely align on drawing package depth.

Sources for this TN16 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.