Multiplex - create more homes
Can the property credibly support more units before layouts and approvals begin?
Start with your address ↓Office A3E · Toronto
Architecture and development judgment, brought in early - for properties with more potential than certainty.
Start with your address ↓
For homeowners, realtors, investors and property professionals.
One address. A clearer decision.Our point of view
First ask what's genuinely possible, which constraint matters and where the value is. We identify the right idea before momentum and consultant fees take over.

Three illustrated categories · Six paths screened
The examples below group the six paths the tool screens: Multiplex, Laneway suite, Garden suite, Conversion, Addition and Hold or sell.
Can the property credibly support more units before layouts and approvals begin?
Is the rear lot a real opportunity, or an idea the site cannot support?
Compare basement, attic, second-storey and rear additions before choosing one direction.
Services
Delivered in minutes — Free
An instant first screen of the strongest directions and next question.
Preliminary screen: conversion and laneway housing are the first paths to investigate; rear-yard access and property-specific constraints still need confirmation.
Typically 1–2 business days — $250 + HST
An architect-reviewed desktop assessment before more money moves.
Confirmed against available records: residential zoning supports a multi-unit path. Flagged: the existing rear addition may conflict with the current setback; a survey is required to confirm it. Recommendation: proceed to a measured conversion study.
Typically 7–8 business days — $1,500 + HST
One recommended development strategy, tested for this property.
Recommendation: pursue conversion as the development strategy. Reserve a garden suite as a future phase only if servicing and financing are confirmed. The roadmap prioritizes the conversion’s unit program, cost, revenue and approval sequence.
The studio
Office A3E is led by architects and developers who have designed, owned, developed and operated property in Toronto. We've sat on both sides of the table: asking what a property can become, and being accountable for what it costs to find out.
Every recommendation has to survive contact with cost, code and the people who will live with the result. If an idea doesn't hold up, we say so before you spend on it.
We aren't here to maximize every site. We're here to name the strongest idea a property can credibly support.
A property in mind?