Annexe / outbuilding in London Fields
London Fields is London Borough of Hackney's mid-victorian london-stock-brick terraces (1855-1885) submarket. London Fields' Victorian terraces here typically sit on shallow 0.6-0.8m London-stock-brick spread footings over the Hackney gravel terrace, so any rear extension that requires modern Building Regs underpinning to 1.0m almost always needs Party Wall notice on both flanks because the neighbour's footing is at the same shallow depth.
What a annexe / outbuilding project looks like here
London Fields' Victorian terraces here typically sit on shallow 0.6-0.8m London-stock-brick spread footings over the Hackney gravel terrace, so any rear extension that requires modern Building Regs underpinning to 1.0m almost always needs Party Wall notice on both flanks because the neighbour's footing is at the same shallow depth.
The 2014 Hackney Article 4 Direction strips Permitted Development rights on flank-wall windows, side dormers, and basement extensions across the entire London Fields CA, so even a rooflight needs a full householder application with a 8-week determination clock.
Many of the 1990s Mare Street warehouse conversions are Class B1-to-C3 conversions completed under the old GPDO 1995 Section 106 affordable-housing carve-out, which means any current alteration that affects the original loft elevation triggers a Section 106 deed-of-variation on top of Building Control.
Garden annexes, ancillary outbuildings and granny annexes — Permitted Development under Class E where the borough hasn't issued an Article 4 Direction; planning consent otherwise. In London Fields specifically, mid-victorian london-stock-brick terraces (1855-1885) stock means annexe / outbuilding scope is shaped by the neighborhood's dominant construction typology. Baily's London scoping flow factors london fields conservation area covers the park frontage and most surrounding terraces and hackney article 4 direction removes permitted development for rear and side extensions across ca into the estimate before a contractor is involved.
Start your London Fields scope — Baily asks the right questions.
Pre-seeded for annexe / outbuilding in London Fields. Mention your 85-180 m2 (915-1,940 sqft), your timeline, and any known constraints — Baily factors the hackney building control + hackney planning service 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
London Fields annexe / outbuilding projects typically run $95K–$285K. London Fields's mid-victorian london-stock-brick terraces (1855-1885) stock, combined with london fields conservation area covers the park frontage and most surrounding terraces, puts most mid-complexity projects in the $190K range. Baily scopes the exact band once you describe the work.
Nearest neighborhoods
Same service, adjacent London submarkets.