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Architectural drawings · Lewisham

Architectural drawings in Sydenham

Fixed-fee planning, building regulations, loft, extension and mansard drawings for properties in Sydenham (SE26). MCIAT chartered. 30% below typical London architect rates.

Sydenham at a glance

Borough
Lewisham
Postcodes
SE26
Dominant stock
Victorian villas, Edwardian terraces
Local landmarks
Sydenham Wells Park
Article 4 in force
No
Conservation areas in borough
30
Architectural design tools and technical drawings — architectural drawings in Lewisham
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MCIAT chartered drawings for planning, building regs, lofts and extensions — fixed fees 30% below typical London architects. Tell us what you need and we’ll reply the same working day.

  • MCIAT chartered
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  • Fixed fees from £840

Local context

Why Sydenham needs a specialist

Sydenham is Victorian villas, Edwardian terraces. The streetscape is dominated by victorian villas, edwardian terraces, which means design decisions — roofscape, rear glazing, side returns, mansards — must respect the period rhythm of the row. Lewisham planning (Lewisham Council) decides applications here. Most permitted development rights apply normally in Lewisham for residential extensions.

Services in Sydenham

Frequently asked in Sydenham

Sydenham planning questions

Do I need planning permission for an extension in Sydenham?

Sydenham sits within Lewisham, so applications are decided by Lewisham Council. Most single-storey rear extensions and side-returns on terraced or semi-detached homes in Sydenham fall under Permitted Development — up to 3m deep (attached) or 4m (detached), under 4m high. Flats, listed buildings and conservation areas always require full planning. Article 4 status here: No. We check eligibility free at the site visit.

What's the dominant housing stock in Sydenham?

Sydenham is characterised by Victorian villas, Edwardian terraces. The dominant stock is Victorian villas, Edwardian terraces. We've drawn extensions and lofts for every period represented here — Victorian rear additions, Edwardian side returns, 1930s wrap-arounds, and contemporary infill where the streetscape allows.

How long does a planning application take in Sydenham?

Lewisham Council statutory determination is 8 weeks for householder applications. Validation typically adds 1–2 weeks. From your first call to a decision, expect 12–14 weeks total: 1 week measured survey, 2 weeks design, 1–2 weeks validation, 8 weeks determination. We've achieved a 98% first-time approval rate across Lewisham.

How much does a loft conversion cost in Sydenham?

Loft conversion drawings in Sydenham start at £1,225 for planning + building regs combined. Construction cost (separate from drawings) is £45,000–£75,000 for a standard rear dormer on a Victorian or Edwardian terrace, £65,000–£95,000 for a hip-to-gable plus dormer. We quote drawings as a fixed fee — no hourly creep.

Are there conservation areas in Sydenham?

Lewisham has 30 designated conservation areas. Nearest to Sydenham: Blackheath. In a conservation area, full planning is required for most external work (including roof additions, rendering, replacement windows). We prepare a Heritage Statement covering the conservation area's character appraisal.

Nearby in Lewisham

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Postcodes covering Sydenham

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

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

PostcodeAreaDominant stockWhat it means for a drawing package
SE26SydenhamVictorian villas, Edwardian terracesSE26 straddles a boundary: Sydenham addresses fall to Lewisham Council or Bromley Council, so confirm which authority validates the drawing package before submitting SE26 drawings.
SE4BrockleyVictorian and Edwardian terracesNeighbouring Brockley, where drawing package work is handled by the same Lewisham Council case officers.
SE23Forest HillVictorian villas, Edwardian terracesNeighbouring Forest Hill, where drawing package work is handled by the same Lewisham Council case officers.
SE23Honor OakVictorian villas, Edwardian terracesNeighbouring Honor Oak, where drawing package work is handled by the same Lewisham Council case officers.
SE13LewishamVictorian terraces, post-war flatsNeighbouring Lewisham, where drawing package work is handled by the same Lewisham Council case officers.
SE3BlackheathGeorgian villas, Victorian terracesNeighbouring Blackheath, where drawing package work is handled by the same Lewisham Council case officers.
SE6Catford1930s semi-detached, post-war flatsNeighbouring Catford, where drawing package work is handled by the same Lewisham Council case officers.
SE8DeptfordGeorgian terraces, post-war estates, new-buildNeighbouring Deptford, where drawing package work is handled by the same Lewisham Council case officers.
SE13Hither GreenEdwardian terraces, 1930s semi-detachedNeighbouring Hither Green, where drawing package work is handled by the same Lewisham Council case officers.

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

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

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

Conservation areas covering Sydenham: Lewisham Council runs 30, and Deptford High Street, Forest Hill, Hither Green are the ones Sydenham owners meet most. A drawing package inside a Sydenham conservation area loses permitted development, so the Sydenham submission is a householder application at £258 decided in 8 weeks — not a £120 prior approval decided in 6 weeks. In Hither Green a drawing package is judged on the street elevation first.

No blanket Article 4 over Sydenham: Lewisham Council has not withdrawn permitted development across Sydenham, so a drawing package outside a Sydenham conservation area usually keeps it. The £129 Lawful Development Certificate is still the document a SE26 owner wants on file.

Sydenham housing stock: Victorian and Edwardian terraces across Brockley, Honor Oak, Forest Hill; 1930s semi-detached in Catford and Hither Green; post-war mixed in Deptford. Generally permissive planning compared to central boroughs; loft conversions and side-return extensions routinely approved under PD. Read that before choosing a drawing package route in Sydenham — construction, not postcode, sets what is achievable. Architectural drawings in Sydenham start at £840 on a fixed fee, or £1,750 for the Complete package covering both Lewisham Council submissions.

Which neighbouring authorities border Sydenham?

Sources for this Sydenham 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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