Tower Hamlets's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in Tower Hamlets conservation areas — with heritage statements and planning officer negotiation built in.
Tower Hamlets's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in Tower Hamlets conservation areas — with heritage statements and planning officer negotiation built in.
Housing stock in Tower Hamlets: Georgian in Spitalfields and Wapping; Victorian industrial conversions; extensive post-war social housing; modern high-density towers in Canary Wharf and Aldgate.
Character: High heritage value in pockets (Spitalfields, Wapping), mixed with substantial regeneration areas; active planning committee.
Article 4: Article 4 for HMOs borough-wide; additional Article 4 covering office-to-residential in Canary Wharf and City Fringe.
We check against Tower Hamlets Council's mansard design guide and design to match the terrace.
Required for Tower Hamlets's conservation areas — demonstrates the mansard respects character and townscape.
Accurate photomontage showing how the mansard sits alongside neighbours — often decisive at Tower Hamlets Council committee.
Mansards invariably trigger Party Wall notices in Tower Hamlets's dense terraced streets. Structural package includes new ridge, tie beams, floor joists.
Full liaison with Tower Hamlets Council planning officer, committee representation if called in.
Part L thermal, Part B fire (critical on mansards), Part E acoustic separation.
Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Direct answers to the questions Tower Hamlets homeowners ask every week about mansard roof extensions.
Start a free quote →Very often yes in Tower Hamlets. Rear mansards are routinely approved by Tower Hamlets Council where the design matches the terrace — including within conservation areas like Spitalfields. A Heritage Statement and sensitive design following the borough's published guidance are essential for conservation area mansards.
A 70° front slope is typical for Tower Hamlets mansards — steep enough to maximise floor area while reading as a roof rather than a full additional storey. Front dormers should be small and symmetrical. Tower Hamlets Council's design guide (where published) takes precedence on detail.
Often yes, but Tower Hamlets Council favours applications supported by wider street precedents. Where mansards already exist nearby in Tower Hamlets, approval is far more likely. We review street precedents at the feasibility stage.
Our architectural fees for a Tower Hamlets mansard start at £1,575 (planning + building regs + structural + heritage statement). Typical Tower Hamlets build costs are £90,000–£150,000 depending on size, complexity and access.
Full-height — typically 2.3–2.5m ceiling from the new floor. Unlike a dormer, which gives partial head height, a mansard provides a complete additional storey within Tower Hamlets's georgian in Spitalfields and Wapping terraced context.
We cover all Tower Hamlets postcodes — {postcodes} — and have submitted mansard applications across the borough. Our heritage statement and design-and-access statement are included in every mansard package.
Tower Hamlets's georgian in Spitalfields and Wapping terraced stock is the natural context for mansard extensions — they were originally designed for Victorian and Edwardian rows. Feasibility depends on street precedent, conservation area status and party wall implications. We assess all three at the free site visit.
A mansard adds a full upper storey — typically 35–45m² of usable floor space. In Tower Hamlets this often converts a 3-bed house to 4 or 5 beds. The steep front slope (70°) and flat top read as a roof, not a full floor, which is why Tower Hamlets Council accepts them more readily than a simple box extension.
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 Tower Hamlets 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. Every loft type across every Tower Hamlets roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planni...
From £1,225. The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with ...
From £995. Turn your unused Tower Hamlets garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment,...
From £1,950. Full architectural technology service for basement digs and cellar conversions in Tower Hamlets — structural underpinnin...
From £350. Chartered structural engineer calculations for every residential intervention in Tower Hamlets — steel beams, lintels, p...
From £540. Fixed-fee measured surveys across Tower Hamlets from £540 — floor plans, elevations and sections to ±3mm accuracy. Leica...
From £450. End-to-end Party Wall Act 1996 service for Tower Hamlets — Section 1, 3 and 6 notices, schedule of condition surveys, pa...
From £1,225. London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your ...
Leave your number and an Architectural technologist will call you back within 30 minutes during working hours.
No obligation. No sales pressure. Just expert advice about mansard roof extensions in Tower Hamlets.
Free quote in 60 seconds. Fixed fee from £1,575. MCIAT chartered.
Get my free quote →