Low Energy Builds in Heritage Conservation Areas: Breathing Light into Sydney’s Inner West Terraces

Terrace houses are the quintessential charm of Sydney’s Inner West — romantic streetscapes of narrow dwellings with lacework balconies, timber floors, high ceilings, and intricate cornices. But behind the heritage beauty often lies a frustrating truth: these homes are typically dark, cold, and spatially inefficient. For those wanting to live within 20km of the city, heritage terraces are often the only available housing typology, especially in tightly conserved areas like Newtown, Annandale, Glebe, and Forest Lodge.

The challenge then becomes: how do we bring comfort, efficiency, and natural light into these homes without compromising their historic character?

One of the most effective design approaches in heritage conservation areas is the introduction of light wells. These can take the form of internal courtyards, garden voids, or stairwells fitted with large operable windows. Done thoughtfully, they bring daylight deep into the floorplan and allow cross ventilation to naturally cool the home — critical for a low energy build. These interventions not only enhance thermal comfort but also reduce the need for artificial lighting and mechanical cooling.

Existing House Images

At a recent project in Forest Lodge, our team applied these very strategies to revitalise a narrow heritage terrace. By carving out a small internal garden between the old and new parts of the house, we created a breathing space that flooded the adjacent living and dining areas with natural light. The courtyard not only brought greenery into the home but also enabled passive cross ventilation, improving thermal comfort year-round. Even with generous ceiling heights, the space felt bright, open, and calm — without relying on skylights.

3D Concept Images

Designing sustainably in heritage areas is about balance. It’s not about compromising the old, but revealing its best qualities while allowing the home to perform to modern expectations. Low energy design isn’t limited to brand-new homes or ultra-modern builds — it can live beautifully within brick terrace walls, under ornate ceilings, and behind heritage facades. All it takes is a bit of clever design, and a deep respect for light, air, and the soul of the space.

Completed Design Images