ADU / accessory dwelling in Chinatown
Chinatown is Boston's late-19th-century mixed-use brick buildings (1880-1920) submarket. Chinatown's compact 6-block residential core sits within a 1985 Strategic Plan zoning overlay that caps tower heights at 85 feet on most parcels — kitchen and bathroom remodels rarely engage the height cap, but vertical-addition projects (rooftop bedrooms) almost always require a planning amendment.
What a adu / accessory dwelling project looks like here
Chinatown's compact 6-block residential core sits within a 1985 Strategic Plan zoning overlay that caps tower heights at 85 feet on most parcels — kitchen and bathroom remodels rarely engage the height cap, but vertical-addition projects (rooftop bedrooms) almost always require a planning amendment.
Many Chinatown tenement conversions retain their original 1900-1920 cast-iron plumbing risers — a single 4-inch stack often serves 6-8 units, which means relocating a kitchen sink to a non-stack wall typically requires basement-routed re-piping at a $14K-$32K adder above the cosmetic kitchen scope.
The Chinatown Mixed-Use district under Boston Zoning permits ground-floor commercial directly under residential, but 780 CMR §508 requires a 1-hour fire-rated horizontal assembly between uses — kitchen-floor renovations frequently surface unrated assemblies that must be brought into compliance before the ISD permit clears.
Boston permits ADUs by-right under the 2023 zoning amendment in select districts — most projects route through ISD long-form permit with parallel BLC + Conservation Commission review on landmark or wetlands-adjacent parcels. In Chinatown specifically, late-19th-century mixed-use brick buildings (1880-1920) stock means adu / accessory dwelling scope is shaped by the neighborhood's dominant construction typology. Baily's Boston scoping flow factors boston article 80 large project review on 50k sqft+ developments and mgl ch. 111 §197a delead on pre-1978 tenement stock into the estimate before a contractor is involved.
Start your Chinatown scope — Baily asks the right questions.
Pre-seeded for adu / accessory dwelling in Chinatown. Mention your 550-1,200 sqft condo units, your timeline, and any known constraints — Baily factors the boston isd 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
Chinatown adu / accessory dwelling projects typically run $165K–$625K. Chinatown's late-19th-century mixed-use brick buildings (1880-1920) stock, combined with boston article 80 large project review on 50k sqft+ developments, puts most mid-complexity projects in the $395K range. Baily scopes the exact band once you describe the work.
Nearest neighborhoods
Same service, adjacent Boston submarkets.