Union Street Residence 2019

Union Street Residence
North Perth WA 6006
10am – 4pm
House Open Style
Open House – No booking required
Housing Type
Standalone House
Project Type
New Build
Chindarsi Architects
Castleprime Construction
House Size
Number of bedrooms
Number of bathrooms
Open with support of
Vincent City Council

This small urban infill home, on only 207m2 of land, demonstrates how creative thinking can help slow the urban sprawl of Perth.

Reverse brick veneer external walls, coupled with additional thermal mass in concrete slabs, was chosen to optimise thermal performance. Double-layered insulation was utilised under roof sheeting, over ceilings, within framed walls and in masonry cavities. A third layer of phase-change insulation was also incorporated over all ceilings and under rooves to futher assist in diurnal temperature stabilisation.

Double-glazed thermally broken frames were utilised to all new fenestration and joinery. External parasols via vertically retractable blinds shade lightweight walls and provide privacy to windows when required ,whilst allowing views to be maintained. Other windows incorporate laser-cut screens and overhangs integrated sculpturally within the shard-like forms. Sustainable sourced hardwood timbers provide natural warmth and intimacy to both interior and exterior spaces.

Rainwater is collected via a 22,500L tank located under the garage for use in toilet flushing, washing, garden watering, reticulation and pool top-up. A gas-boosted solar hot water system with circulating ring main minimises water and energy consumption. Further water-use efficiencies are achieved by the use of subsoil irrigation, and raised food gardens take pride of place on the verge.

The house is self-sufficient for its power, with 5.86kW of solar panels on the north- and west-facing rooves feeding to a battery backup system. Ongoing energy consumption is minimised through the use of predominantly LED fittings. Uniquely, the project also incorporates Perth’s first domestic closed-loop geothermal heating/cooling system, which uses the equivalent energy of a small conventional split system for the whole house.

Designed by Chindarsi Architects and built by Castleprime Construction.


This house achieved a NatHERS rating of 8.5 stars using NatHERS accredited software (AccuRate). Find out how the star ratings work on the Nationwide House Energy Rating Scheme (NatHERS) website.


This home is supported by


Years Open
Universal design accessability
Adaptive design
Universal Design Features
80cm minimum door opening width
Flush thresholds (no lip) to all external doors
Lever handles for doors (no knobs)
Tapware to be easily accessed from outside the shower
BAL Rating
Wall materials (external and internal)
Double brick
Lightweight construction (timber frame)
Window and door types
Clerestory windows
Double glazing
Low-e, films
Sliding windows/doors
Pocket doors
Window and door shading
Awnings (external)
Deciduous tree/vegetation
Sustainable materials
Australian timber hardwood cladding, veneers and softwood from sustainable sources. Polished marble plaster finishes in lieu of fired ceramic/porcelain tiles. Natural stone finishes.
Insulation - Under roof
Type: Reflective foil
Rating: R2.6
Insulation - Ceiling
Type: Bulk – glass wool
Rating: R5.0
Insulation - External walls
Type: Bulk – glass wool
Rating: R3.0
Insulation - Internal walls
Type: Bulk – glass wool
Rating: R2.0
Healthy home
Natural light and ventilation
Natural oil sealer/finishes
No carpets
All electric home
Renewable energy
Energy storage/battery
Water heating
Solar hot water (flat panel)
Passive heating cooling
Thermal chimney
Thermal mass
Active heating cooling
Ceiling fans
Energy efficiency
Draught proofing
Efficient lighting
Efficient appliances
Water harvesting and saving
Underground rainwater storage
Type: Versatile concrete rainwater tank – precast concrete
Size: 22,500L
Hot water recirculation
Drip irrigation
Garden / Outdoors
Drip irrigation
Edible garden