Sloping-site & sub-sol in 17e Arrondissement (Batignolles / Ternes)
17e Arrondissement (Batignolles / Ternes) is 17e arr. — Batignolles-Monceau's haussmannien + early-20th c. + clichy-batignolles 2010s zac submarket. Clichy-Batignolles ZAC (2010s) is one of Paris's first eco-districts with Plan Climat Air Énergie targets baked into the PLU — new construction triggers RE 2020 + 25% bonus on renewable energy share, and existing-building renovations adjacent to ZAC parcels face an aligned thermal upgrade pressure.
What a sloping-site & sub-sol project looks like here
Clichy-Batignolles ZAC (2010s) is one of Paris's first eco-districts with Plan Climat Air Énergie targets baked into the PLU — new construction triggers RE 2020 + 25% bonus on renewable energy share, and existing-building renovations adjacent to ZAC parcels face an aligned thermal upgrade pressure.
The 17e's Plaine Monceau cohort (rue Cardinet, rue de Lévis) has unusually deep Haussmannien lots with 1860s-era cours intérieures that connect across multiple co-propriétés — wet-stack relocation in any one apartment can trigger AG votes in neighbouring buildings.
Paris's signature sub-sol development — Montmartre, Belleville, Buttes-Chaumont. Most arrondissements cap excavation at one storey below principal elevation; BRGM old-quarry screening is mandatory in the 5e, 6e, 13e, 14e, 15e. In 17e Arrondissement (Batignolles / Ternes) specifically, haussmannien + early-20th c. + clichy-batignolles 2010s zac stock means sloping-site & sub-sol scope is shaped by the neighborhood's dominant construction typology. Baily's Paris scoping flow factors abf perimeters partial and clichy-batignolles zac eco-district into the estimate before a contractor is involved.
Start your 17e Arrondissement (Batignolles / Ternes) scope — Baily asks the right questions.
Pre-seeded for sloping-site & sub-sol in 17e Arrondissement (Batignolles / Ternes). Mention your 55-200 m² appartements bourgeois, your timeline, and any known constraints — Baily factors the mairie du 17e + mairie de paris (du) + abf (partial) review queue into the scope.
Loading chat…
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
17e Arrondissement (Batignolles / Ternes) sloping-site & sub-sol projects typically run $245K–$1.3M. 17e Arrondissement (Batignolles / Ternes)'s haussmannien + early-20th c. + clichy-batignolles 2010s zac stock, combined with abf perimeters partial — parc monceau + place des ternes, puts most mid-complexity projects in the $748K range. Baily scopes the exact band once you describe the work.
Nearest neighborhoods
Same service, adjacent Paris submarkets.