Annexe / outbuilding in Vauxhall
Vauxhall is London Borough of Lambeth's mixed: late georgian terraces around kennington lane submarket. Most of the Nine Elms tower flats here are 999-year leaseholds with a service-charge ground rent peppercorn structure but a heat-network supply via a Mayor-mandated district-heating connection; any kitchen remodel that changes a hob from gas to induction needs an electrical-supply uprate notice through the building manager to the heat network operator before First Fix can sign off.
What a annexe / outbuilding project looks like here
Most of the Nine Elms tower flats here are 999-year leaseholds with a service-charge ground rent peppercorn structure but a heat-network supply via a Mayor-mandated district-heating connection; any kitchen remodel that changes a hob from gas to induction needs an electrical-supply uprate notice through the building manager to the heat network operator before First Fix can sign off.
Lambeth's 2021 OAPF requires Whole Life Carbon assessment for any scheme of 10 units or more, which in practice means that even a rear-extension to a Kennington Lane Georgian terrace can need a WLC calculation if it forms part of a larger redevelopment masterplan.
Because of the Embankment foul-water trunk that runs under Albert Embankment, Lambeth Building Control routinely defers any basement scheme within 30m of the trunk to Thames Water for build-over consent, which adds 8-12 calendar weeks to the basement excavation start.
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 Vauxhall specifically, mixed: late georgian terraces around kennington lane stock means annexe / outbuilding scope is shaped by the neighborhood's dominant construction typology. Baily's London scoping flow factors vauxhall, nine elms, battersea opportunity area planning framework and gla london plan 2021 + mayor stage 1 referral for buildings >30m into the estimate before a contractor is involved.
Start your Vauxhall scope — Baily asks the right questions.
Pre-seeded for annexe / outbuilding in Vauxhall. Mention your 55-160 m2 (590-1,720 sqft), your timeline, and any known constraints — Baily factors the lambeth building control + lambeth planning service + gla referral for tall buildings 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
Vauxhall annexe / outbuilding projects typically run $95K–$285K. Vauxhall's mixed: late georgian terraces around kennington lane stock, combined with vauxhall, nine elms, battersea opportunity area planning framework, 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.