10 Mistakes to Avoid When Renovating a Period Property [Part 2]
- Jennifer Copley
- Jul 9
- 3 min read
Collaborating with many London clients, both commercial and residential, we’re experts in the art of renovating and refurbishing period properties and listed buildings.
A building with historical significance presents exciting opportunities as well as challenges. Here we present part 2 of our 10 Mistakes to Avoid When Renovating a Period Property.
Not Designing for Functionality

Period properties are highly sought after and maintaining their historical charm and character is important, however, meeting the needs of a contemporary lifestyle should not be overlooked or underestimated.
For example, older Victorian homes often have outdated layouts, with a single rear bathroom, little natural light, and no open-plan spaces. Upgrading insulation, glazing, heating, and layout can greatly enhance comfort, energy efficiency, and sustainability. Working with an experienced architect helps ensure renovations meet regulations while making the most of the available space.
Take, for example, our Kensington Mews project. We stripped the interior of a near-derelict mews house and completely rebuilt the space from the inside out. Within the original shell, we created a new layout that prioritises efficiency and quality, making the most of the compact footprint. We also enclosed the rear courtyard and added a loft-style mansard extension.
Replacing Original Windows with uPVC
Many homeowners replace original timber sash windows with uPVC for energy efficiency, but this can negatively alter the appearance of your home and violate conservation regulations.
Windows can be central to a period property's character. While original sash windows often do not meet modern insulation standards, high-quality double-glazed replicas offer an effective compromise.
Incorrect Insulation and Ventilation
Improving insulation in period properties is essential for energy efficiency, however, it takes a careful approach to avoid trapping moisture and causing long-term damage. Traditional buildings were designed to breathe, so modern insulation should be balanced with proper ventilation to maintain healthy airflow. Using breathable materials like wood fibre or lime-based plasters can help regulate humidity while keeping the building warm. Skylights and glazing provide natural light and ventilation.
An experienced conservation architect can assess each property individually to ensure upgrades enhance comfort without compromising the structure’s integrity.
Overlooking Interior Design
Working with an interior architect will ensure you achieve your vision. A successful design scheme balances heritage with modernity ensuring that layouts are light-filled, décor is timeless, and spaces are functional.
We love the contemporary approach to Art Deco elegance that characterises our Ecclestone Square project. We approached this renovation with a deep respect for the building’s historical significance and worked meticulously to restore key heritage elements. At the same, we transformed the layout and proportions of the space, creating a light airy interior infused with contemporary details, such as bespoke lighting and joinery.
Forgetting Exterior and Garden Design
Modern fences, synthetic decking, or concrete paving can undermine a historic home's exterior elegance. Gardens and landscaping form a key part of the property's overall heritage and aesthetic.
Traditional landscaping materials like brick paths, wrought iron railings, cottage-style planting, and manicured lawns can go a long way to enhancing the curb appeal of your property.
Ask the Heritage Specialists
Need help with your extension or renovation of a listed building or historic home? We specialise in architectural conservation, combining historical research, technical expertise, and thoughtful design to sensitively restore and adapt heritage buildings.
Our approach balances authenticity with contemporary functionality, ensuring each project is both sustainable and enduring.
From planning to construction, we integrate traditional craftsmanship with modern techniques. Contact us today to see how we can help you create a space that honours the past while remaining relevant for the future.
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