Boston multifamily stock: triple-deckers, stacked flats, and reorder specs

Multifamily building types in Greater Boston

Triple-deckers dominate much of the turnover conversation, but Boston-area PMs also manage doubled-up flats, small courtyard walk-ups, and converted two-family stock.

• Triple-deckers — three stacked units, often one opening size per floor but out-of-square jambs
• Wood and vinyl replacement sash mixed with original double-hungs
• Rear sliders and decks on newer wings — vertical track, not mini brackets
• Outside mount on flat trim when inside depth is under 1"
• White vinyl mini remains the default bedroom and bath SKU on turns

Field guides for Boston

Each guide covers mounting depth, typical opening sizes, and reorder specs for a specific housing archetype — not a generic city landing page.

• Window Field Guide · Triple-Deckers & Stacked Flats

  Triple-decker windows: measure every floor separately

  Three-family wood-frame buildings from the 1890s–1920s repeat a floorplan — but almost never repeat the same opening size after a century of settlement. Boston landlords reorder 1" vinyl mini more than any other line for turns. This guide covers mount methods by material, not a tourism page about the city.

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Related guides

Production-home, townhome, and patio-slider guides that often overlap Boston portfolios.

• Window Field Guide · Student Housing & Near-Campus Rentals

  Student housing and near-campus rentals: high turns, durable specs, standardized SKUs

  Near-campus rentals in Austin, Boston, Eugene, Columbus, and college towns nationwide share high turnover, roommate floorplans, and maintenance teams that need repeatable SKUs — not one-off retail orders. Owners standardize white cordless vinyl mini on every bedroom, vertical on patio sliders, and faux wood only on selective front-facing living rooms when the unit is repositioned.

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• Window Field Guide · Pre-War & Post-War Apartments

  Pre-war apartment windows: mount depth, materials, and what landlords reorder

  Pre-war and early post-war apartments rarely share one window module. Jambs are shallow, plaster is uneven, and patio sliders want a different treatment than narrow bedroom openings. This guide maps mounting methods by blind type — not a generic city landing page.

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• Window Field Guide · Patio Sliders & Sliding Glass Doors

  Patio sliders and sliding glass doors: pick product, size, and stack side first

  A patio slider is a product problem before it is a city problem — the same 72" × 80" rear door appears on Houston production homes, DFW ranch plans, Florida lanais, garden apartments, and Phoenix block/stucco stock. Buyers search by opening size (68×84, 78×84, 72×80, 94" wide) and by product type (vertical vs roller vs faux wood panels). This guide maps the decision tree: measure glass, pick vertical or roller or stacked faux, choose stack side, then pick inside vs face mount on the header.

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Frequently asked questions

Do you install in Boston apartment buildings?

We ship nationwide. On-site installation is available in Dallas–Fort Worth only. Boston-area owners typically reorder shipped product and install in-house or through a local contractor.