We care. Beyond duty.

PERFORMANCE-BASED ARCHITECTURE & PLANNING

Design, Engineering, Sustainability, Innovation, Management

DESIM-Arch is an award-winning architecture and planning practice specializing in sustainable, research-driven design across NSW and ACT. As a Registered Nominated Architect (RN 10502), Dejan Simovic and team merge heritage with cutting-edge technologies to achieve optimal solutions for:

  • High-performance residential/commercial projects

  • Energy efficiency, Passive House and NatHERS cerified projects

  • Complex planning DA approvals

  • Heritage-sensitive reuse and alterations

30+ years delivering projects where design excellence meets rigorous risk management.

Performance-Based Architecture. Engineered for Tomorrow.

Modern residential buildings with balconies, situated along a narrow waterway, surrounded by trees and greenery, during early morning or late afternoon sunlight.

Precision Architecture, Tailored to Scale

Modern eco-friendly building with solar panels on the roof, surrounded by landscaped garden, bicycles, and wind turbines in the background during sunset.

Architecture & Urban Design

Architectural Designs
Urban Design
Small Project Solutions
Large Project Expertise
Creative Storytelling

Modern living room with a fireplace, large windows showing snow outside, white and dark sofas, wooden flooring, and a staircase in the background.

Interior Design

Residential Private Residences
Residential Community Areas
Commercial & Retail
Hospitality

Office workspace with city skyline view, open map, laptop showing a 3D city model, coffee mug, keys, yellow ruler, pen, and documents on a white desk.

Urban & Regional Planning

Development Applications
Strategic Planning
Statutory Planning and Advice
Planning Proposals
Council Approvals

A workspace with a laptop displaying a woman in glasses, two potted plants, a coffee mug, a tablet showing a garden, a planner, a smartphone, a stack of notebooks, and a chart on the desk. Sunlight streams through window blinds, casting shadows on the wall.

Peer‎ Review

Planning Potential
Development Opportunities
Design Efficiency
Construction Savings

A graph showing energy balance heating analysis with heat flows for losses and gains, including non-useful heat gains, external and roof heat, basement ceiling, and window heat, with color-coded segments.

Research & Development

Sustainable Innovation
Heritage Adaptation
Material Research
Climate Solutions