Stephen Aldersley, 69, and Michael Loveridge, 79, have defied conventional expectations by upsizing their home as they enter their later years. The couple recently completed a self-build project on the green belt in Cambridgeshire, creating a 4,305 sq ft residence on three acres—nearly triple the size of their former 1,614 sq ft house. Their new property is notable for being the first in Britain to achieve Passivhaus Premium certification, a standard indicating the house generates more energy than it consumes.
The project fulfills a long-held ambition for Aldersley and Loveridge, who initially planned to build a home in the early 1990s but postponed due to market instability. After retiring, they seized the opportunity presented by a plot on the edge of their village, which included several agricultural buildings and a Victorian hay barn that had permission for residential conversion. A survey, however, revealed damp issues and subsidence, prompting the decision to demolish the barns and build anew while adhering to the original footprint to secure planning approval on green belt land.
Designed by Archangel Architects of Cambridge, the house features a striking angular form with black timber cladding and a zinc roof. Its layout comprises south, west, and north wings arranged in a courtyard to optimize solar gain—maximizing warmth in winter and shade in summer. The design incorporates sustainability alongside aesthetics, including triple-glazed windows, high levels of insulation, and an airtightness rating of 0.6 air changes per hour, a substantial improvement over their previous home’s 10.0 ACH.
The interior blends minimalist design with artistic touches. The entrance hall displays a custom chandelier composed of 30 hand-blown glass spheres, while the dining room features concealed cupboards in a Mondrian-inspired pattern. The kitchen includes a large glass wall with sliding doors and handless cabinetry, with practical innovations such as a dishwasher positioned at waist height. The home is equipped with modern technology, including a mechanical ventilation heat recovery system, and smart lighting controlled by phone, reflecting a high degree of sophistication.
Energy efficiency is a key focus. The house is powered by an array of 84 south-facing solar panels connected to ten batteries on an outbuilding’s roof, generating approximately 32,000 kWh annually—about 1.6 times the average consumption for a four-bedroom detached home. Excess energy is stored or exported to the grid, contributing to the home’s superior energy performance and an unprecedented EPC score of 111. Although the couple opted not to install solar-powered hot water, they recycle greywater and harvest rainwater for irrigation.
The build involved substantial investment, including £62,500 for solar panels, £50,000 for a ground source heat pump, £35,000 for the ventilation system, and £190,000 in triple glazing. Their landscaping supports local wildlife, with hedgehog pathways and bird-friendly lighting meeting 27 planning conditions tied to green belt regulations. The garden includes mature trees and an orchard, reflecting the couple’s commitment to environmental stewardship.
While some argue that older homeowners should downsize to alleviate housing pressures, Aldersley and Loveridge maintain that their home suits their active lifestyle and personal preferences. They view the project as a revitalizing experience and encourage others approaching retirement to consider building modern, energy-efficient homes tailored to their needs.