ADU / accessory dwelling in Sihlfeld
Sihlfeld is Stadt Zürich — Kreis 3's wilhelminische mietshäuser 1900-1920 submarket. Sihlfeld holds Zurich's densest run of pre-1914 Wilhelminische Mietshäuser outside Kreis 4 — the parallel Lochergut, Idaplatz and Goldbrunnenplatz cohorts have ~5,500 Wohnungen built between 1900-1920, and a recent Stadt Zürich GEAK survey flagged 78% of them at Klasse E or worse on Heizenergie.
What a adu / accessory dwelling project looks like here
Sihlfeld holds Zurich's densest run of pre-1914 Wilhelminische Mietshäuser outside Kreis 4 — the parallel Lochergut, Idaplatz and Goldbrunnenplatz cohorts have ~5,500 Wohnungen built between 1900-1920, and a recent Stadt Zürich GEAK survey flagged 78% of them at Klasse E or worse on Heizenergie.
Mietrecht OR 269d caps Mietzinserhöhung after a Sanierung at the wert-vermehrenden Anteil only — Stadt Zürich Schlichtungsbehörde regularly denies Aufschläge above 50% of the Sanierungskosten, which constrains the Bauherrschaft Renditerechnung tighter than any other Kreis.
Zurich ADUs — detached, attached, and conversion paths — scoped against Hochbauamt Zurich + SIA 380/1 + KBOB setback + height + parking variances. In Sihlfeld specifically, wilhelminische mietshäuser 1900-1920 stock means adu / accessory dwelling scope is shaped by the neighborhood's dominant construction typology. Baily's Zurich scoping flow factors stadt zürich bauordnung w4 and mietrecht or 269d into the estimate before a contractor is involved.
Start your Sihlfeld scope — Baily asks the right questions.
Pre-seeded for adu / accessory dwelling in Sihlfeld. Mention your 55-115 m², your timeline, and any known constraints — Baily factors the stadt zürich — amt für baubewilligungen (afb) 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
Sihlfeld adu / accessory dwelling projects typically run $255K–$750K. Sihlfeld's wilhelminische mietshäuser 1900-1920 stock, combined with stadt zürich bauordnung w4 — moderate aufstockungspotenzial, puts most mid-complexity projects in the $503K range. Baily scopes the exact band once you describe the work.
Nearest neighborhoods
Same service, adjacent Zurich submarkets.