Every loft type across every Southwark roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regulations, structural calculations and party wall notices, all fixed price.
Every loft type across every Southwark roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regulations, structural calculations and party wall notices, all fixed price.
Housing stock in Southwark: Georgian and Regency in Bermondsey and Borough; Victorian terraces in Camberwell and Peckham; Dulwich Estate controlled housing; riverside new-build.
Character: Dulwich Estate private planning scheme affects much of SE21 and SE22; Southwark planning for rest of borough; strong heritage context.
Article 4: Article 4 for HMOs borough-wide; additional Article 4 for office-to-residential in Bermondsey and Elephant & Castle.
We confirm before quoting whether your Southwark loft has the head height and structural capacity.
Most Southwark loft conversions qualify for a Lawful Development Certificate. We check Article 4 and conservation constraints first.
Option studies including massing, internal layout and roof geometry.
Staircase Part K compliance, Part B fire escape, Part L insulation, Part E acoustic separation.
Ridge beam, purlins, steelwork, floor joist upgrade, dormer framing — chartered engineer sign-off.
Almost every Southwark loft triggers Party Wall notices. We draft notices and coordinate with surveyors.
Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Direct answers to the questions Southwark homeowners ask every week about loft conversion drawings.
Start a free quote →It depends on your exact address in Southwark. Most standard loft conversions qualify as Permitted Development (no planning permission needed) if under 40m³ for terraced or 50m³ for semi-detached, with matching materials and 20cm eaves setback. However Southwark has Article 4 Directions that may remove these rights — and flats, conservation areas and listed buildings always require full planning. We confirm permitted development eligibility at the free feasibility visit.
Our architectural technology fees for a Southwark loft conversion start at £1,225 (planning + building regs + structural). Typical construction build-cost in Southwark is £45,000–£80,000 for a standard dormer and £65,000–£110,000 for a mansard.
Very often yes in Southwark. Rear mansards are routinely approved by Southwark Council where the design matches the terrace — including within conservation areas like Camberwell Grove. A Heritage Statement and sensitive design following the borough's published guidance are essential for conservation area mansards.
2.3m measured from existing ceiling joist to existing ridge is the practical minimum for a standard conversion in Southwark. Below 2.2m usually requires dropping the ceiling below (reducing rooms on the floor beneath) or redesigning as a mansard.
Most Southwark loft conversions trigger Party Wall Act notices — legal notices to all adjoining owners. Rear dormers can also prompt right-to-light considerations in dense terraced streets, particularly in Camberwell Grove. We handle both processes.
Southwark's georgian and Regency in Bermondsey and Borough stock lends itself to rear dormers (most common), hip-to-gable (semi-detached), and mansard (period terraces and conservation contexts). Velux-only conversions are possible where ridge height allows. We recommend the best structural and planning route at survey.
We cover all Southwark postcodes — {postcodes} — with surveyors based locally. Survey appointments within 3 working days. Our structural engineer is London-based and attends site when required.
Most Southwark loft conversions require Party Wall notices to adjoining neighbours — typically for steel beam installation and/or raising the party wall. We can co-ordinate the notice process; our in-house engineer handles the structural element. The Act gives neighbours 14 days to respond.
We cover every London borough with the same fixed-fee approach. If your property sits on a boundary, here are the neighbouring options.
We cover every architectural technology service in Southwark with one chartered team.
From £840. A fixed-fee, end-to-end service — measured survey, scaled drawings, Design & Access Statement where required, Planning P...
From £840. A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L ther...
From £1,225. The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with ...
From £1,575. Southwark's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards th...
From £995. Turn your unused Southwark garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, ful...
From £1,950. Full architectural technology service for basement digs and cellar conversions in Southwark — structural underpinning de...
From £350. Chartered structural engineer calculations for every residential intervention in Southwark — steel beams, lintels, pad f...
From £540. Fixed-fee measured surveys across Southwark from £540 — floor plans, elevations and sections to ±3mm accuracy. Leica Dis...
From £450. End-to-end Party Wall Act 1996 service for Southwark — Section 1, 3 and 6 notices, schedule of condition surveys, party ...
From £1,225. London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your ...
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