We’re thrilled to share a major win: the approval to install eleven solar panels on the roof of a grade II listed building in Sevenoaks, Kent. This project highlights how historic properties can embrace modern sustainability without compromising their heritage value.

Project Background
Heritage Unlimited was brought on board to navigate the heritage challenges of this listed building, adjacent to a conservation area, and a non-designated heritage asset. The client aimed to boost the property’s energy efficiency and reduce its carbon footprint. However, a prior application had been withdrawn after pre-application advice from the conservation officer raised concerns about potential visual and physical harm to the listed building.

Our Expert Approach
After being engaged, our consultant conducted a thorough site visit. This involved:

• Evaluating the listed building, its setting, the adjacent conservation area, and the non-designated heritage asset.
• Analysing short- and long-range views, confirming that the south-facing roof pitches (where the panels would go) were not visible from public areas.
• Conducting detailed internal and external assessments of the building’s fabric and structure.

We collaborated closely with OPEN Architecture to develop a minimally invasive design that protected the significance of the various heritage assets.

Building a Strong Case
Drawing on up-to-date guidance like Historic England’s Advice Note 18 (Adapting Historic Buildings for Energy and Carbon Efficiency) and the National Planning Policy Framework (NPPF), we prepared a comprehensive Heritage Statement. Key justifications included:

• The selected roof pitches were secondary and less prominent.
• High-quality design and construction would prevent any physical damage.

Despite the conservation officer’s ongoing objection, the case was referred to the Development Management Committee. The Chief Planning Officer agreed with our arguments, finding no visual dominance or harm to the building’s fabric. This preserved the character, appearance, significance, and setting of the heritage assets, leading to the grant of Listed Building Consent.

Broader Impact and Future Opportunities
This success builds on our track record in sustainable heritage projects, such as obtaining permission for 168 ground-mounted solar panels in the grounds of a listed Elizabethan stately home at Paxhill Park. At Heritage Unlimited, we’re passionate about blending environmental efficiency with historic preservation. We look forward to more projects that help clients achieve energy goals while honouring the past.

If you’re considering sustainability upgrades for a historic property, get in touch—we’re here to guide you through the process!