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Project Overview

The London Borough of Haringey has embarked on an ambitious project to retrofit 289 properties, with the primary goal of achieving an Energy Performance Certificate (EPC) rating of Band C. This initiative, which targets 212 properties on the Coldfall Estate and 77 nearby, aims to reduce fuel poverty through a “fabric first” approach. This strategy prioritizes improving the building envelope before considering mechanical systems.

 

Retrofit Measures

The retrofit measures under consideration include:

  • Doors
  • Loft Insulation
  • Windows
  • External Wall Insulation (EWI)
  • Ventilation Systems

 

If these measures are insufficient to meet the EPC Band C target, underfloor insulation may also be implemented. To ensure precision in energy efficiency improvements, the project employs Standard Assessment Procedure (SAP) modeling for each property and Passive House Planning Package (PHPP) modeling for property archetypes.

 

SHDF Wave 2.2 Bid

Of the 289 properties, 173 have been submitted for the Social Housing Decarbonisation Fund (SHDF) Wave 2.2 bid. This funding is crucial to support the extensive retrofit activities planned, emphasizing the project’s commitment to sustainable and energy-efficient housing.

 

Keegans Cost Consultancy Involvement

Keegans’ Cost Consultancy team plays a pivotal role in the project by conducting Improvement Option Evaluations (IOE). The IOE process is a systematic approach to analyzing and comparing various retrofit measures to determine the most effective and efficient solutions. This ensures that the chosen improvements deliver optimal value in terms of cost, performance, and sustainability.

 

Evaluation Process

Keegans’ approach to the IOE involves several key steps:

  • Baseline Assessment: Evaluating the current condition of each property to understand existing performance levels and identify areas needing improvement.
  • Identification of Improvement Options: Exploring a range of retrofit measures, including:
    • Heating Systems: Comparing high-efficiency boilers, heat pumps, and district heating systems.
    • Renewable Energy Sources: Assessing the viability of solar panels, wind turbines, and other renewable technologies.
    • Water Efficiency Measures: Investigating low-flow fixtures and greywater recycling systems.
    • Lighting: Considering energy-efficient lighting solutions such as LED systems.
    • Building Fabric Improvements: Enhancing insulation, windows, doors, and other elements of the building envelope.
  • Technical Feasibility: Analyzing the technical aspects of each retrofit measure to ensure they can be practically implemented.
  • Cost-Benefit Analysis: Evaluating the economic viability of each option, weighing the costs against the expected benefits.
  • Environmental Impact: Assessing the environmental implications of each measure to promote sustainability.
  • Risk Assessment: Identifying and mitigating potential risks associated with each retrofit option.
  • Stakeholder Consultation: Engaging with residents, local authorities, and other stakeholders to gather input and ensure the chosen solutions meet their needs and expectations.
  • Prioritization and Selection: Ranking the retrofit measures based on the above criteria to select the most effective solutions.
  • Implementation Plan: Developing a detailed plan for the execution of the selected retrofit measures.

 

Conclusion

Keegans’ systematic and structured approach to Improvement Option Evaluation ensures that the London Borough of Haringey’s retrofit project is both efficient and effective. By carefully assessing the technical, financial, and environmental aspects of each option, Keegans and the stakeholders can make informed decisions that maximize the benefits of the retrofit project. This comprehensive evaluation process ensures that the chosen improvements will enhance building performance, sustainability, and occupant comfort, ultimately contributing to the reduction of fuel poverty in the borough.

  • Client

London Borough of Haringey

 

  • Services

Quantity Surveyor

Principal Designer

 

  • Contract Dates

June 2023 - June 2025

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