MILDENHALL
25 Mildenhall Rd
Location: 25 Mildenhall Rd, North York, Toronto, ON
Year of Construction: 2023– Present (Permit issued July 31, 2023)
Area: Approx. 309.4 m² (3330.6 ft²)
Overall Height: 8.08 m (Proposed height exceeds the 7.5 m limit for flat roofs by variance approval)
No. of Storeys: 2 Storeys + Basement
Structural System: Reinforced concrete foundation, light wood-frame superstructure, flat roof assembly
Material Used: Natural stone and composite cladding with extensive glazing and metal accents
Key Architectural and Energy Features:
•Modern geometric form with clean volumes and projected glazing planes
•Lot area 909.2 m² (19.5 m width) with 34% lot coverage– below the maximum allowed 35%
•Front yard setback 7.61 m, rear setback 15.12 m providing balanced site mass and privacy
•Energy efficiency verified through HOT2000 v11.11 software under SB-12 Performance Path
•96% AFUE natural-gas furnace with 75% HRV efficiency and central split A/C (14.4 kW capacity)
•Annual energy consumption 235.9 GJ (about 5% below the reference building target of 249.4 GJ)
•Estimated greenhouse-gas emissions 20.36 tonnes CO₂/year
•Annual operating energy cost ≈ $4,106 (C$ 3,051 natural gas + C$ 1,056 electricity)
•Domestic hot-water system 92.5% efficiency at 55 °C, average daily use 188 L
Architect / Engineer: Ashkan Yazdani, P.Eng.
Optimal Engineering / SOW Earth Inc.
Responsible for structural design and energy-performance modeling
About the Project
The 25 Mildenhall Residence represents a modern interpretation of Toronto’s contemporary detached home. Located within a low-densit residential neighbourhood in North York, the design balances geometric clarity with environmental responsibility. Its façade features a sophisticated blend of stone and glass, allowing natural light to fill the interiors while maintaining a sense of privacy and mass appropriate to the context. The house exceeds Ontario’s SB-12 energy standards through a high-efficiency mechanical system, optimized insulation, and an airtight building envelope. With its precise proportions and sustainable design principles, 25 Mildenhall Rd combines elegant urban living with a forward-thinking approach to energy performance.
