Boston Renters GuideApartment Info

Boston Apartment Sizes Explained

What to realistically expect from Boston apartment sizes and layouts.

6 min readUpdated January 2026

Boston apartments are smaller than the national average—and that "1 bedroom" might be smaller than you expect. Here's a realistic guide to apartment sizes in Boston.

Understanding Boston Building Types

Triple-Decker (Three-Decker)

Boston's signature housing type. Three-story wooden buildings with one unit per floor. Built 1870s-1920s. Common in Dorchester, South Boston, Jamaica Plain, Allston/Brighton.

  • • Usually 3BR, sometimes 4BR units
  • • Layout: railroad style or shotgun
  • • Often with porches on each level
  • • Watch for: old wiring, lead paint, heating efficiency

Brownstone / Rowhouse

Victorian-era brick or brownstone rowhouses. Common in Back Bay, Beacon Hill, South End. Often converted from single-family to multi-unit.

  • • Varies widely: studio to 3BR
  • • High ceilings, original details
  • • Garden-level units (basements) are cheapest
  • • Watch for: old plumbing, expensive heat

Modern High-Rise / Mid-Rise

Post-1980s construction, especially in Seaport, Fenway, and newer developments. Amenity buildings with doorman, gym, etc.

  • • Efficient layouts but smaller rooms
  • • Studios: 400-550 sq ft
  • • 1BR: 600-750 sq ft
  • • Modern amenities, higher rent

Typical Boston Apartment Sizes

Here's what to realistically expect:

Average Square Footage

Studio350-500 sq ft

Combined living/sleeping area, separate bathroom. Some have kitchenettes, some have galley kitchens.

1 Bedroom500-750 sq ft

Separate bedroom and living area. In older buildings, bedroom may be small. Open layouts more common in new construction.

2 Bedroom800-1,100 sq ft

Common in triple-deckers. Bedrooms may not be equal size. One bathroom is typical.

3 Bedroom1,000-1,400 sq ft

Full floor of a triple-decker is typical. Still usually one bathroom. Common for roommate situations.

Boston-Specific Terms

  • "Junior 1BR" or "Convertible"

    A studio with a nook or alcove that could fit a bed. Not a real bedroom—no door, no closet.

  • "Railroad" or "Shotgun" Layout

    Rooms in a line, you walk through each to get to the next. Common in triple-deckers. Privacy issues in shared apartments.

  • "Garden Level"

    Basement or partially below-ground unit. Cheaper, but check for: dampness, natural light, window wells.

  • "Walk-up"

    No elevator. Third-floor walk-up in a triple-decker is the cheapest (and most stairs).

  • "In-law" or "Accessory Unit"

    Separate unit in a single-family home. May share entrance or have separate access.

What to Check During Viewing

  • Actual square footage — Ask for it. Listings often exaggerate.
  • Closet space — Old Boston apartments have tiny closets. Where will your stuff go?
  • Bedroom size — Can you fit your bed AND furniture?
  • Layout — Is it railroad style? Will roommates need to walk through your room?
  • Kitchen — Full-size appliances? Counter space? Dishwasher?
  • Ceiling height — Older buildings have high ceilings (10-12 ft). New construction may be 8 ft.
  • Windows — Natural light matters, especially in winter. Garden-level units can be dark.

Photos Can Be Deceiving

Wide-angle lenses make rooms look bigger. Always visit in person. Bring a tape measure if you're unsure about furniture fit.

Maximizing Small Space

Boston apartments require creative thinking:

  • Measure before you buy furniture — That couch might not fit up the stairs
  • Vertical storage — Tall bookshelves, wall hooks, over-door organizers
  • Bed risers — Create under-bed storage
  • Multi-function furniture — Storage ottomans, drop-leaf tables
  • Declutter regularly — Small space = less stuff

Research Before You Sign

Check any Boston building for violations and complaints before committing.

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