Annexe / dépendance in Marais
Marais is 3e + 4e arr.'s 17-18th c. hôtels particuliers + medieval fragments submarket. PSMV Marais is one of only 100-odd Plans de Sauvegarde nationally — its 1965 base text was last updated in 2013 and its prescriptions on 17th-century stair railings, panelling, and parquet patterns are non-negotiable, often requiring custom-fabricated joinery at €2,000-4,500 per running metre.
What a annexe / dépendance project looks like here
PSMV Marais is one of only 100-odd Plans de Sauvegarde nationally — its 1965 base text was last updated in 2013 and its prescriptions on 17th-century stair railings, panelling, and parquet patterns are non-negotiable, often requiring custom-fabricated joinery at €2,000-4,500 per running metre.
Most Marais hôtels particuliers have triple-courtyard layouts (cour d'honneur + cour de service + cour de jardin) — wet-room and kitchen extraction must respect 17th-century stack alignments rather than being routed to the most efficient modern path.
Garden annexes, dépendances, ancillary outbuildings — Déclaration Préalable under the PLU when ground floor area is 5–20 m²; Permis de Construire above. ABF screening on any annexe visible from a classified Bâtiment de France perimeter. In Marais specifically, 17-18th c. hôtels particuliers + medieval fragments stock means annexe / dépendance scope is shaped by the neighborhood's dominant construction typology. Baily's Paris scoping flow factors psmv marais and abf avis conforme on classés stock into the estimate before a contractor is involved.
Start your Marais scope — Baily asks the right questions.
Pre-seeded for annexe / dépendance in Marais. Mention your 45-220 m², your timeline, and any known constraints — Baily factors the mairie 3e/4e + du + abf + psmv marais 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
Marais annexe / dépendance projects typically run $95K–$285K. Marais's 17-18th c. hôtels particuliers + medieval fragments stock, combined with psmv marais — interior partition lock, puts most mid-complexity projects in the $190K range. Baily scopes the exact band once you describe the work.
Nearest neighborhoods
Same service, adjacent Paris submarkets.