Small Apartment Renovation: Open-Plan Design for Compact Living Spaces

Renovating a small apartment that has sat neglected for years requires a different approach than updating a well-maintained space. When a 38 m² studio in the historic center of Saint Petersburg was taken on as a renovation project, the building had plaster falling from walls and broken windows. The goal was to transform it into a compact, functional home with open-plan living, abundant storage, and room to entertain guests. Small apartment renovations demand careful planning because every square meter must serve a purpose.

Assessing a Long-Vacant Apartment Before Starting Work

Before any design work begins, a thorough evaluation of the existing condition is essential. Apartments that have been empty for many years suffer from multiple problems that must be addressed before cosmetic work can start. The first step is clearing deteriorated materials and documenting what lies beneath the surfaces. In the Saint Petersburg project, the team cleared all walls and ceilings of old plaster, exposing the underlying brick and concrete structure for inspection.

Common issues found in long-vacant apartments include:

• Deteriorated plaster on walls and ceilings that requires complete removal to reach sound substrate
• Failed or outdated utility systems including electrical wiring, plumbing pipes, and heating equipment
• Broken windows and compromised weather sealing that allow moisture and pests to enter
• Structural weaknesses from years of water intrusion, settlement, or original construction defects
• Pest infestations or mold growth in areas that have remained damp and undisturbed
• Missing or damaged fixtures, fittings, and finish elements that must be entirely replaced

The evaluation revealed rough seams, construction inscriptions, and metal fragments embedded in the original masonry. Rather than covering these elements, the team decided to leave them exposed as part of the design. Understanding what lies behind the finishes is critical in any renovation of an older building, because the substrate condition directly affects the feasibility of different approaches.

Structural Repairs and Utility Replacements in Historic Buildings

Once deteriorated finishes are removed, the true structural condition becomes visible. In older buildings, especially those with historic significance, original construction methods may not meet modern standards for load capacity, fire resistance, or energy performance. The project team reinforced several openings where the original construction was flawed, addressing problems hidden behind plaster for decades.

Complete Utility Replacement Strategy

For buildings that have sat vacant for years, partial repairs to plumbing, electrical, or heating systems are rarely sufficient. Corrosion in old steel pipes, degraded insulation on cloth-wrapped wiring, and outdated service capacities all argue for complete replacement. While the upfront cost is higher, the reliability and safety benefits justify the investment. Modern materials such as PEX piping offer longer service lives and better performance than legacy materials.

Recommended Sequence for Utility Replacement

1. Disconnect and remove all existing utility lines, fixtures, and distribution panels
2. Inspect structural cavities, floor joists, and wall chases for hidden damage or hazardous materials
3. Install new electrical conduit and wiring sized to meet current code requirements for the planned layout
4. Run new plumbing lines with PEX or copper, including isolation valves at each fixture location
5. Upgrade the heating and ventilation system, incorporating energy recovery where feasible
6. Pressure test all systems and verify performance before closing walls and ceilings

The apartment had windows on three sides and access to a small balcony, which provided natural light across the entire floor plan. Some window openings required reinforcement due to construction flaws identified during the structural survey. Addressing these issues early prevents expensive rework and ensures that finished surfaces are not damaged by later adjustments.

Open-Plan Layout Strategies for Compact Apartments

With only 38 m² of floor area, every design decision had to maximize the perception of space while maintaining full functionality. Open-plan layouts work well in small apartments because they eliminate visual barriers that make spaces feel cramped. The exposed brick and concrete contributed to a sense of height that finished surfaces would have diminished.

Maximizing Natural Light Distribution

The apartment’s configuration placed windows on three sides, flooding the interior with daylight throughout the day. This is an advantage many small apartments lack, particularly in dense urban areas where buildings may share party walls on both sides. For units without multiple exposures, designers can use light wells, glass interior partitions, and reflective surfaces to distribute available light more evenly. A small balcony adds usable outdoor space that extends the apartment’s effective living area during favorable weather.

Core Principles of Small Apartment Open-Plan Design

• Remove non-structural walls between living, dining, and kitchen zones
• Use consistent flooring and ceiling heights for visual continuity
• Choose multi-function furniture like storage ottomans, fold-down tables, or sofa beds
• Position mirrors opposite windows to reflect daylight deeper into the interior
• Keep color palettes light and neutral on large surfaces to avoid visual clutter
• Define functional zones through furniture arrangement and area rugs rather than physical partitions

The open space was designed for hosting parties, with comfortable zones for relaxation and socialization within the single volume. This dual-purpose approach to apartment layout ensures the space adapts to different activities throughout the day without requiring furniture to be moved.

Storage Solutions Designed for Small Living Spaces

A common challenge in small apartment renovations is providing adequate storage without sacrificing precious floor area. The project team surrounded the main living space with white panels that concealed abundant closed storage along the perimeter. This approach keeps everyday clutter out of sight while maintaining clean sightlines in the primary living area.

Perimeter-Based Concealed Storage Systems

Storage built into the walls along the room perimeter takes up no floor space and can be customized to fit the specific needs of the occupant. Unlike freestanding cabinets that intrude into the room volume, perimeter storage integrates with the architecture and becomes invisible when closed. These systems can include:

• Floor-to-ceiling cabinets for bulk storage of household supplies, tools, and equipment
• Built-in shelving for books, decorative objects, and daily-use items that need quick access
• Integrated desk workspace that folds away into the wall when not in use
• Hidden compartments within wall panels for seasonal clothing and infrequently used equipment
• Custom closet systems with optimized hanging, drawer, and shelf configurations

The white panel approach creates a clean visual backdrop that makes the space feel larger while hiding practical storage behind flush doors. These renovation strategies work across apartment types, whether for young professionals or adapted for aging in place. The key is planning storage locations before construction begins so the panel systems integrate seamlessly with the overall design.

Preserving Historic Architectural Features in Urban Renovations

The apartment contained one exceptional historic feature that became the centerpiece of the renovation: a ceiling light lantern measuring almost 3 by 3 meters. This glass-roof element was a remnant of the building’s original construction and required extensive restoration. The team strengthened the steel framework and replaced the sealed double-glazed unit while preserving the historic character of the fixture.

Historic features like this lantern add irreplaceable value to a renovation but require specialized skills to restore properly. The restoration process typically involves:

1. Detailed structural assessment of the lantern frame, support beams, and roof connections
2. Careful disassembly of deteriorated components with documentation of original construction methods
3. Fabrication of replacement elements that match the original dimensions, materials, and profiles
4. Installation of modern sealed glazing units that provide improved thermal and acoustic performance
5. Comprehensive weatherproofing and sealant application to prevent future water intrusion at all joints

In dense urban areas, bringing construction materials and equipment to upper-floor renovation projects presents logistical challenges. The use of compact lifting equipment on urban apartment projects demonstrates how construction logistics adapt to tight site conditions. Delivery access, noise restrictions, and waste removal in a historic city center require advance coordination.

The exposed brick walls and concrete ceilings revealed after removing the old plaster became signature design elements. Rather than covering them with new drywall, the team left them raw with rough seams, construction markings, and metal fragments visible. This approach respects the building’s history while creating a modern industrial aesthetic that contrasts with the sleek white storage panels. For projects where site access is limited, equipment choices such as self-erecting cranes for tight sites have made urban apartment renovations feasible where traditional machinery cannot reach. Planning these logistics before demolition prevents costly delays.