Interior design in 3e Arrondissement (Marais Nord)
3e Arrondissement (Marais Nord) is 3e arr. — Temple / Marais's 17th-century hôtels particuliers submarket. The Plan de Sauvegarde du Marais predates standard PLU and is one of only ~100 PSMVs nationally — it freezes interior partition layouts on classés stock, so wall removals in 17th-century hôtels particuliers commonly require pre-1948 cadastral plan reconstruction before the dossier is even accepted.
What a interior design project looks like here
The Plan de Sauvegarde du Marais predates standard PLU and is one of only ~100 PSMVs nationally — it freezes interior partition layouts on classés stock, so wall removals in 17th-century hôtels particuliers commonly require pre-1948 cadastral plan reconstruction before the dossier is even accepted.
Most Marais buildings have stone vaulted basements (caves voûtées) — any wet-room relocation that crosses the cave ceiling line needs structural étude on the vault haunches before a Permis de Construire is issued.
Bespoke menuiserie, period restoration, contemporary fit-out — integrated with the construction programme. Loi Carrez surface disclosure mandatory on resale. In 3e Arrondissement (Marais Nord) specifically, 17th-century hôtels particuliers stock means interior design scope is shaped by the neighborhood's dominant construction typology. Baily's Paris scoping flow factors plan de sauvegarde et de mise en valeur du marais (psmv) and abf avis conforme into the estimate before a contractor is involved.
Start your 3e Arrondissement (Marais Nord) scope — Baily asks the right questions.
Pre-seeded for interior design in 3e Arrondissement (Marais Nord). Mention your 45-220 m², your timeline, and any known constraints — Baily factors the mairie du 3e + mairie de paris (du) + abf + plan de sauvegarde 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
3e Arrondissement (Marais Nord) interior design projects typically run $22K–$285K. 3e Arrondissement (Marais Nord)'s 17th-century hôtels particuliers stock, combined with plan de sauvegarde et de mise en valeur du marais (psmv) — entire arrondissement covered, puts most mid-complexity projects in the $154K range. Baily scopes the exact band once you describe the work.
Nearest neighborhoods
Same service, adjacent Paris submarkets.