Architectural drawings in DA18

Which postcode districts around DA18 do we cover for drawing package work?

Every DA18 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. DA18 fees below are the statutory England rates for 2026, not drawing package estimates.

How does a drawing package differ street by street across DA18?

Roof pitch, wall build-up and plot depth change every few DA18 streets, and each one changes what a drawing package can achieve at that address.

• Bordering DA18: Bexleyheath (DA6, DA7) — a drawing package in Bexleyheath starts from 1930s semi-detached, and Bexleyheath reads as 1930s semi-detached. in DA6. Bexley Council assesses Bexleyheath architectural drawings against its own Bexleyheath character guidance, and the location plan we draw for Bexleyheath references Bexleyheath Broadway.
• Bordering DA18: Sidcup (DA14, DA15) — a drawing package in Sidcup starts from 1930s semi-detached, edwardian villas, and Sidcup reads as 1930s semi-detached, Edwardian villas. in DA14. Bexley Council assesses Sidcup architectural drawings against its own Sidcup character guidance, and the location plan we draw for Sidcup references Sidcup station.
• Bordering DA18: Welling (DA16) — 1930s semi-detached defines Welling, where 1930s semi-detached set what a drawing package can do. Any Welling drawing package is validated by Bexley Council, with Welling High Street the usual Welling reference point on the site plan.
• Bordering DA18: Erith (DA8) — Victorian terraces, post-war estates defines Erith, where victorian terraces, post-war estates set what a drawing package can do. Any Erith drawing package is validated by Bexley Council, with Erith Riverside the usual Erith reference point on the site plan.
• Bordering DA18: Crayford (DA1) — Victorian terraces, 1930s semi-detached defines Crayford, where victorian terraces, 1930s semi-detached set what a drawing package can do. Any Crayford drawing package is validated by Bexley Council, with Crayford station the usual Crayford reference point on the site plan.
• Bordering DA18: Old Bexley (DA5) — Georgian and Victorian village conservation defines Old Bexley, where georgian villas, victorian cottages set what a drawing package can do. Any Old Bexley drawing package is validated by Bexley Council, with Old Bexley Village the usual Old Bexley reference point on the site plan.
• Bordering DA18: Belvedere (DA17) — drawing package work in Belvedere means 1930s semi-detached, post-war flats. Belvedere is 1930s semi-detached, post-war flats. Bexley Council decides the Belvedere application, and Belvedere station anchors the Belvedere location plan.
• Bordering DA18: Barnehurst (DA7) — a drawing package in Barnehurst starts from 1930s semi-detached, and Barnehurst reads as 1930s semi-detached. in DA7. Bexley Council assesses Barnehurst architectural drawings against its own Barnehurst character guidance, and the location plan we draw for Barnehurst references Barnehurst station.

How do conservation areas and Article 4 affect a drawing package in DA18?

How designation changes a DA18 (Erith Marshes) drawing package: Bexley Council maintains 16 conservation areas, including Old Bexley, Crayford, Welling. Inside any of them a DA18 (Erith Marshes) 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. Welling sets the tone for DA18 (Erith Marshes) casework.

No blanket Article 4 over DA18 (Erith Marshes): Bexley Council has not withdrawn permitted development across DA18 (Erith Marshes), so a drawing package outside a DA18 (Erith Marshes) conservation area usually keeps it. The £274 Lawful Development Certificate is still the document a DA18 owner wants on file.

What DA18 (Erith Marshes) is built from: 1930s semi-detached dominates; Victorian cottages in Bexley Village and Crayford; post-war estates in Thamesmead and Erith. Outer south-east London suburban; very permissive planning environment; strong PD uptake for extensions and loft conversions. That mix decides the drawing package route in DA18 (Erith Marshes) more than the postcode does, and it is what a Bexley Council case officer reads first. A householder application costs £548 paid to Bexley Council direct, with 8 weeks to a decision once validated.

Which neighbouring authorities border DA18?

• Greenwich — the Greenwich boundary runs against Bexley, so a drawing package a street from DA18 (Erith Marshes) is decided by Greenwich Council instead. Greenwich runs 20 conservation areas across SE3 and its neighbours, which is why architectural drawings priced for DA18 (Erith Marshes) are re-checked against Greenwich policy whenever the DA18 (Erith Marshes) address sits on that edge.
• Bromley — the Bromley boundary runs against Bexley, so a drawing package a street from DA18 (Erith Marshes) is decided by Bromley Council instead. Bromley runs 48 conservation areas across BR1 and its neighbours, which is why architectural drawings priced for DA18 (Erith Marshes) are re-checked against Bromley policy whenever the DA18 (Erith Marshes) address sits on that edge.

Sources for this DA18 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.