Hackney House / Architecture For London

Architects: Architecture for London
Area: 182 m²
Year: 2024
Photography: Nick Dearden – Building Narratives
Project Architect: Titas Grikevičius
Interior Designers: Architecture for London
Structural Engineer: Architecture for London
Main Contractor: Jonat Ltd
Location: Parkholme Road, Hackney E8, London
Country: United Kingdom

Hackney House, a Victorian home in Hackney, was restored and retrofitted by Architecture for London to improve energy efficiency and thermal comfort while maintaining its historic character. A rear extension expands living areas and strengthens the connection to the garden, while a loft conversion introduces a curved lime plaster staircase leading to a new bedroom with a dormer window. The project eliminates fossil fuel reliance through air source heat pumps for underfloor heating and an MVHR system for filtered pre-warmed air circulation. Internal insulation with wood fiber and aerogel reduces heat loss and condensation risk. Structural elements integrate composite steel and timber flitch beams, while the extension is built with Marshmoor brick and GGBS concrete lintels. Interior finishes, including stone tiles, lime plaster, and oak detailing, enhance durability and natural aesthetics.

This early Victorian home in Hackney has been carefully restored and retrofitted to enhance energy efficiency and comfort while preserving its architectural heritage. The renovation introduces a rear extension that expands the home’s living spaces, providing a seamless connection to the garden and a dedicated area for family gatherings. A curved staircase, finished in lime plaster, leads to a loft conversion that incorporates a spacious dormer window, increasing natural light and maximizing functionality.

The project prioritizes sustainability by eliminating fossil fuel dependency. Two air source heat pumps installed in the rear garden supply efficient underfloor heating, while mechanical ventilation with heat recovery (MVHR) system ensures continuous airflow with filtered, pre-warmed air. To enhance thermal performance, wood fiber insulation is applied to interior walls, and aerogel is used in window reveals to reduce thermal bridging and prevent condensation risks.

Material selection was guided by sustainability and durability. Structural updates include composite steel and timber flitch beams, balancing strength with reduced embodied carbon. The rear extension is constructed with Marshmoor brick and concrete lintels containing 50% ground granulated blast furnace slag (GGBS), lowering cement consumption without compromising structural integrity. Internally, the design emphasizes natural materials, featuring stone tile flooring, lime plaster finishes, and a combination of solid oak and oak-veneered plywood for warmth and cohesion. Through thoughtful restoration and sustainable design choices, the project successfully transforms this historic residence into a highly efficient, modern family home while respecting its Victorian origins.