73 Sumner Street: Mullen Buildings Live-Work Lofts

image of 73 Sumner

73 Sumner consists of 16 historic live-work lofts. Every unit has a unique floor plan and offers an exciting combination of concrete and steel finishes and many custom-designed features. The building has controlled entry, an elevator and a convenient parking garage.

73 Sumner is the first phase of the Mullen Buildings Development, which now includes 60 Rausch and 52 Rausch. The Mullen Buildings were originally constructed in the 1920's during a South of Market industrial building boom. The complex housed the Mullen Company, which designed and constructed architectural millwork for banks and other businesses. Progenitors for the modernist industrial esthetic, the Mullen Buildings have now been artfully converted into high-quality lofts.

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Uses by Floor

  • Levels 1-2 each consist of five bi-level live/work units.
  • Level 3 consists of four bi-level live/work units each with private decks.
  • Level 4 consists of two bi-level live/work units each with private decks, and a common deck.


  • Floors: Main floors are color-stained, sealed concrete, Mezzanines have carpet and pad.
  • Walls and Ceilings: Exposed concrete, smooth gypsum board, and/or steel deck.
  • Lighting: Incandescent recessed, wall sconces, and track lighting wall & ceiling finishes.
  • Stairs: Mill-grade steel in some units.
  • Ornamental Guardrails: Custom designed, mill-grade steel w/horizontal bars and continuous handrail.
  • Doors: Solid core with clear finished hardwood veneer.
  • Kitchens: Solid granite countertops, maple veneer cabinets with flush panel doors, stainless steel range, refrigerator, dishwasher, microwave/fan under-cabinet.
  • Sinks: Custom designed, mill-grade steel or solid granite tops, stainless steel basins.
  • Bathrooms: Two or more bathrooms per unit. Featuring stained concrete or natural stone floors, natural stone tub/shower surrounds, and custom designed, mill-grade steel accessories.
  • Data Wiring: Each outlet w/Home Run to On-Q Panel. Featuring 2-4 pair category 5 cables, 2 co-axial cables, and optical fiber (continuity is not warranted).
  • Space Heating: In-floor radiant with building common gas-fired boiler.
  • Unit Signage: Custom designed mill-grade steel w/display area, unit number and door bell.
  • Ventilation System: Central forced air supply with control motorized damper for each unit.
  • Washer/Dryer: Conveniently located hookups.

View units available for lease or for sale.

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