Rear & side extensions in Stepney
Stepney is London Borough of Tower Hamlets's victorian terraces (1870-1900) + post-war lcc estates + 2000s east london regeneration schemes submarket. Because Stepney sits partly within Environment Agency flood zone 3 near Limehouse Basin, new ground-floor habitable space conversions require a Flood Risk Assessment — adds roughly £1,800-£2,800 to a planning submission and occasionally forces raised thresholds or mechanical ventilation on windowless basements.
What a rear & side extensions project looks like here
Because Stepney sits partly within Environment Agency flood zone 3 near Limehouse Basin, new ground-floor habitable space conversions require a Flood Risk Assessment — adds roughly £1,800-£2,800 to a planning submission and occasionally forces raised thresholds or mechanical ventilation on windowless basements.
Stepney's Victorian terraces are heavily overlain with post-war council infill — a single street can have Victorian terraces, 1950s LCC slab blocks, and 2000s regeneration mixed-use towers, so cost comps here are extremely typology-sensitive (a 100 m² kitchen remodel varies £35K-£95K purely on building-age factors).
Commercial Road's Tall Buildings Policy allows up to 30 storeys, so new flats above that line are often in buildings with Building Safety Act higher-risk-building duties — Accountable Person registrations, Building Assessment Certificates, and mandatory fire-door inspections that add to service charge.
Rear extensions, side-return infills, wraparound extensions — Permitted Development Class A rights or planning consent under the Article 4 borough overlay; Party Wall etc. Act 1996 notice on any party-wall touch. In Stepney specifically, victorian terraces (1870-1900) + post-war lcc estates + 2000s east london regeneration schemes stock means rear & side extensions scope is shaped by the neighborhood's dominant construction typology. Baily's London scoping flow factors stepney green conservation area and tower hamlets article 4 direction on hmos into the estimate before a contractor is involved.
Start your Stepney scope — Baily asks the right questions.
Pre-seeded for rear & side extensions in Stepney. Mention your 65-160 m² (700-1,720 sqft), your timeline, and any known constraints — Baily factors the tower hamlets council planning + building control review queue into the scope.
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Who is Baily?
Baily is named after Francis Baily — an English stockbroker who retired at 51, became an astronomer, and in 1836 described something on the edge of a solar eclipse that nobody had properly articulated before: a string of bright beads of sunlight breaking through the valleys along the moon’s rim.
He wasn’t the first to see them. Edmond Halley saw them in 1715 and barely noticed. Baily’s contribution was clarity — describing exactly what was happening, in plain language, so vividly that the whole field of astronomy paid attention. The phenomenon is still called Baily’s beads.
That’s what we wanted our AI to do. Every inbound call and text has signal in it — a homeowner’s real question, a timeline, a budget, a hesitation that means “yes but.” Baily listens to every one, 24/7, and finds the beads of light.
Baily was a businessman before he was a scientist. That’s our vibe too.
Questions LA homeowners actually ask
Stepney rear & side extensions projects typically run $75K–$385K. Stepney's victorian terraces (1870-1900) + post-war lcc estates + 2000s east london regeneration schemes stock, combined with stepney green conservation area, puts most mid-complexity projects in the $230K range. Baily scopes the exact band once you describe the work.
Nearest neighborhoods
Same service, adjacent London submarkets.