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P-55 Building Series

Location: Russia: Moscow and surrounding regions
Construction: 1978 — 2002


The P-55 is a Soviet and post-Soviet panel housing series designed for dense urban environments, often placed along major roads due to its excellent sound insulation. Non-residential rooms usually face the noisy side.

Buildings come in various colors — beige, orange, pink, brown, yellow, blue, and teal — and have uncoated facades. Apartments are equipped with glazed balconies (except on the first floor), separate bathrooms and toilets, and natural exhaust ventilation. Entrances are served by two 400 kg passenger elevators and have trash chutes on every floor. Layouts are standardized, with four units per floor and limited remodeling potential due to structural wall configuration.


• Alternative Name: P-55 (П-55)
• Sections: 2 or more
• Apartments per floor: 4
• Ceiling height: ~2.5 m
• Balconies: Glazed balconies and bay windows (except first floor)
• Bathroom layout: Separate bathroom and toilet in all units
• Ventilation: Natural exhaust via vent shafts
• Elevators: Two 400 kg passenger elevators per section
• Trash chute: On every floor
• Roof type: Flat
• Facade finish: Painted panel concrete (no cladding)
• Structure: Load-bearing internal and external walls
• Wall material:
  – Exterior: 34 cm expanded clay concrete
  – Interior: 14–18 cm reinforced concrete
  – Partitions: 8 cm gypsum
• Floor slabs: Solid reinforced concrete, 14 cm
• Typical apartment sizes (living / kitchen):
  1-room: 20–21 / 8–9 m²
  2-room: 30–31 / 8–9 m²
  3-room: 40–41 / 8–9 m²
  4-room: 55–57 / 8–9 m²


• High sound insulation
• Large bathrooms and toilets
• Glazed balconies
• Durable wall and floor structure


• Narrow room proportions
• Limited remodeling flexibility
• Hard-to-drill wall material (expanded clay concrete)