ADU / accessory dwelling in Herengracht
Herengracht is Amsterdam's premier golden age merchant houses (1620-1700) along the gouden bocht submarket. Herengracht's Gouden Bocht parcels at numbers 380-510 are the most heavily protected residential stock in the Netherlands — every internal alteration above EUR 25K triggers RCE federal-level review on top of Gemeente Amsterdam BMA, adding roughly 8-12 weeks even on simple work.
What a adu / accessory dwelling project looks like here
Herengracht's Gouden Bocht parcels at numbers 380-510 are the most heavily protected residential stock in the Netherlands — every internal alteration above EUR 25K triggers RCE federal-level review on top of Gemeente Amsterdam BMA, adding roughly 8-12 weeks even on simple work.
The 1672 Rampjaar caused a wave of bankruptcies among Herengracht owners, and roughly 40% of houses were rebuilt 1680-1710 with cheaper Bentheimer sandstone facades — restoration matches today require sourcing from the same German quarry, which still operates and supplies AMS conservation projects.
Because Herengracht canal walls are Gemeente-owned bouwkundig erfgoed, any kitchen waste line that exits through the kademuur needs separate Waternet kademuur-doorvoer permits beyond the standard rioleringsaansluiting.
Amsterdam ADUs — detached, attached, and conversion paths — scoped against Gemeente Amsterdam Vergunningen + Bouwbesluit 2012 / Bbl setback + height + parking variances. In Herengracht specifically, premier golden age merchant houses (1620-1700) along the gouden bocht stock means adu / accessory dwelling scope is shaped by the neighborhood's dominant construction typology. Baily's Amsterdam scoping flow factors unesco world heritage core and rijksdienst voor het cultureel erfgoed (rce) consent into the estimate before a contractor is involved.
Start your Herengracht scope — Baily asks the right questions.
Pre-seeded for adu / accessory dwelling in Herengracht. Mention your 220-520 m² (2,370-5,600 sqft), your timeline, and any known constraints — Baily factors the gemeente amsterdam stadsloket centrum + bma + crk 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
Herengracht adu / accessory dwelling projects typically run $195K–$570K. Herengracht's premier golden age merchant houses (1620-1700) along the gouden bocht stock, combined with unesco world heritage core, puts most mid-complexity projects in the $383K range. Baily scopes the exact band once you describe the work.
Nearest neighborhoods
Same service, adjacent Amsterdam submarkets.