Deep Retrofit BER: G to A1 (Anticipated)
As seen on RTÉ’s ‘Room to Improve’ 2025
Transforming Homes: A Deep Retrofit Journey with Jason & Katie Rehill.
Our collaboration with RTÉ’s ‘Room to Improve’ brought us the opportunity to work on a deep retrofit for Jason and Katie Rehill’s 4-bedroom semi-detached home. The project went far beyond standard SEAI One Stop Shop upgrades, delivering a complete transformation that re-imagined their home for energy efficiency and modern family living.
Challenges and Objectives
The Rehill family’s home presented various challenges, requiring extensive renovations to align with their energy efficiency goals. Having lived in the property for several years, Jason and Katie had a clear vision for what they wanted: enhanced energy performance and re-imagined family spaces to create a more functional, comfortable environment.
One key objective was to make the property energy efficient while introducing additional living spaces that aligned with their lifestyle, like the rear extension built to create an open-plan kitchen + dining room. This extra space decompresses the layout of the house, while providing extra natural light as result of the panoramic glazing installed in this extension.
Customer Testimonial:
“We had a vision for a cozy, energy-efficient home that suited our family’s needs, and we couldn’t be happier with the results. Larkrock went above and beyond to make our dream home a reality.”
– Jason & Katie Rehill, January 2025
A Collaborative Approach
Our comprehensive project management approach ensured Jason and Katie were involved at every stage. Detailed planning sessions, collaborative design reviews, and regular updates helped us align with their vision and deliver a smooth experience.
Our Turnkey Project Management Approach
Given the extensive scope of this transformative One Stop Shop project, detailed planning was required. Collaborating with all stakeholders was essential to ensure progress and adherence to the Rehill family’s vision.
We wanted things to run as smoothly as possible and stayed close to the homeowners throughout.

Structured Planning and Collaboration
Detailed planning sessions were carried out by the Larkrock project team outlining every aspect of the project, covering design, logistics, and execution.
Trade Partnerships
On a regular basis we collaborate with a network of skilled tradespeople and can bring painters, tilers, and carpenters into the design process and project implementation.
During this particular project we were happily able to introduce many from our network and their contributions were pivotal in bringing the Rehill family’s vision to life.
Trade Partnerships and Supplier Support
The project benefited from our established partnerships with skilled tradespeople and suppliers, allowing access to quality materials and preferential pricing:
Collaborations for Kitchen and Wardrobe Installations
Working in partnership with kitchen and wardrobe installers we know enabled us to offer preferential pricing and access to a range of design options. This was a great way of ensuring the project stayed within budget and was delivered on time. Again an additional service we’re happy to provide to people planning larger renovations.
Homeowner-Centric Approach
As with all of Larkrock’s projects central to our approach was a focus on keeping the homeowners closely involved throughout each phase of the project. Regular updates, collaborative design sessions, and clear communication ensured that their thoughts were not only heard but considered each step of the way.
Outcome and Impact
The Rehill family’s home underwent a stunning transformation. The deep retrofit is expected to achieve a remarkable energy rating upgrade from BER G to A1 or in other words: “from the worst it can be in the BER scale to the best it can be in the BER scale”. The home is now not only visually appealing but also significantly more functional and energy efficient.
With expanded living spaces, the home reflects the Rehills’ vision and showcases what can be achieved with a deep retrofit project supported by SEAI grants.