# Multiplex Services Toronto | Multiplex Toronto Builders URL: https://multiplextorontobuilders.ca/services/ ![Framed Toronto multiplex under construction beside a finished fourplex](/images/hero/framed-three-storey-toronto-multiplex-under-constr.webp) 10 Services, One Team # Multiplex Services in Toronto and the GTA From the first zoning check to the final occupancy inspection: feasibility, design, permits, Committee of Adjustment variances and construction of triplexes, fourplexes, approved-zone sixplexes, conversions and additions. Every service has a published CAD price band and a fixed price after feasibility. Build and Design & Approvals ## Choose the Service That Fits Your Stage Build services cover new construction, conversions and additions. Design and approvals cover the work that decides what you are allowed to build. Most owners start with a feasibility assessment. Build ![Finished three-storey brick and oak fourplex on a tree-lined Toronto infill street in morning light](/images/misc/finished-three-storey-brick-and-oak-fourplex-on-a-.webp)$400K-$2M ### Multiplex Construction Ground-up triplex, fourplex and approved-zone sixplex builds on Toronto infill lots, scoped to OBC Part 9 or Part 3 by unit count and height. View multiplex construction [Multiplex Construction →](/multiplex-construction/) ![New three-storey Toronto fourplex with brick and oak facade and four separate entrances](/images/misc/new-three-storey-toronto-fourplex-with-brick-and-o.webp)$500K-$1.4M ### Fourplex Construction Four-unit new builds, as-of-right citywide under EHON, on standard, corner and narrow Toronto lots with separate hydro and HRV per unit. View fourplex construction [Fourplex Construction →](/fourplex-construction/) ![Modern Toronto triplex on a narrow infill lot with three stacked units](/images/misc/modern-toronto-triplex-on-a-narrow-infill-lot-with.webp)$400K-$1.1M ### Triplex Construction Three-unit new builds for narrow lots and multigenerational families: basement, main and upper units with separate entrances and fewer variances. View triplex construction [Triplex Construction →](/triplex-construction/) ![Finished six-unit residential building on a Scarborough corner lot](/images/misc/finished-four-storey-six-unit-residential-building.webp)$800K-$2M ### Sixplex Construction Six-unit builds only in the 2025 approved zones: Toronto and East York District and Scarborough Ward 23 North, with Part 3 scope priced up front. View sixplex construction [Sixplex Construction →](/sixplex-construction/) ![Toronto semi-detached brick house partway through a multiplex conversion with a new side entrance](/images/misc/toronto-semi-detached-brick-house-mid-conversion-t.webp)$250K-$900K ### Multiplex Conversion Existing Victorians, semis and bungalows reworked into 2-4 legal self-contained units, with underpinning, fire separation and separate meters planned up front. View multiplex conversion [Multiplex Conversion →](/multiplex-conversion/) ![Two-storey rear addition on a Toronto brick house with large casement windows](/images/misc/two-storey-rear-addition-on-a-toronto-brick-house-.webp)$180K-$600K ### Multiplex Additions Rear, side and storey additions that create or enlarge units, with structural tie-in and a foundation check before design. View multiplex additions [Multiplex Additions →](/multiplex-additions/) Design & Approvals ![Architectural drawings on a site table inside a framed Toronto multiplex](/images/misc/architectural-drawings-spread-on-a-site-table-insi.webp)$50K-$150K ### Design-Build Feasibility, stamped design, permits and construction under one contract and one PM, priced as it is drawn and fixed after feasibility. View design-build [Design-Build →](/multiplex-design-build/) ![Architect's desk with multiplex floor plans and a scale model under window light](/images/misc/architect-desk-with-multiplex-floor-plans-elevatio.webp)$15K-$60K ### Architectural Design Concept, zoning review, BCIN or OAA stamped permit drawings, structural and MEP coordination and SB-12 energy compliance. View architectural design [Architectural Design →](/multiplex-architectural-design/) ![Building permit card posted in the window of a Toronto multiplex under construction](/images/misc/building-permit-card-posted-in-the-window-of-a-tor.webp)$5,000-$18K ### Building Permits Zoning certificates, permit applications, CoA minor variances with hearing representation, utility and right-of-way permits, and inspections. View building permits [Building Permits →](/multiplex-building-permits/) ![Typical Toronto residential lot with an older detached house and deep backyard](/images/misc/wide-view-of-a-typical-toronto-residential-lot-wit.webp)$1,500-$4,500 ### Feasibility Assessment Written report in 1-2 weeks: GeoWarehouse zoning pull, unit-count test, servicing check, heritage and tree screen and a CAD budget range. View feasibility assessment [Feasibility Assessment →](/multiplex-feasibility-assessment/) Published CAD Pricing ## Multiplex Price Bands at a Glance Construction, design and approvals in one table. Fixed pricing follows a written feasibility report. | Unit Type | Price (CAD) | Project | Timeline | | --- | --- | --- | --- | | Triplex New Build | $400K-$1.1M | 3 units, Part 9 | 8-10 months | | Fourplex New Build | $500K-$1.4M | 4 units, as-of-right citywide | 9-12 months | | Sixplex (Approved Zones) | $800K-$2M | 6 units, Part 3 likely | 12-16 months | | House-to-Multiplex Conversion | $250K-$900K | 2-4 units in existing house | 6-9 months | | Architectural Design (Stamped) | $15K-$60K | Permit drawing set | 6-10 weeks | | Permit Coordination | $5K-$18K | Toronto Building + CoA | 9-14 weeks | | Feasibility Assessment | $1,500-$4,500 | Written zoning + budget report | 1-2 weeks | Additions: rear $180K-$400K, side $220K-$600K. Design-build fee: $50K-$150K plus construction. Want a quick estimate? Try the multiplex cost calculator [/tools/ →](/tools/) . Execution Roadmap ## How Every Service Fits Together Whether you hire us for one step or all four, the order is the same. 1. 1 ### Step 1: Zoning Verification & Feasibility GeoWarehouse parcel pull, zoning permissions, setback and coverage math, servicing screen and a written CAD budget range in 1-2 weeks. 2. 2 ### Step 2: Architectural Design & CoA Coordination BCIN or OAA stamped drawings that make the most of rentable area, energy compliance, and a Committee of Adjustment filing only if it pays off. 3. 3 ### Step 3: Permit Approvals & Pre-Construction Building permit, water and hydro applications filed in parallel, and Tarion enrolment for new homes before we break ground. 4. 4 ### Step 4: Construction Delivery & Occupancy Fixed-price construction, inspections booked and passed, separate systems per unit and a first-visit occupancy pass. Start With Certainty ## Not Sure Which Service You Need? Start with a written feasibility report. It tells you what your lot can carry, which services you need next and roughly what they cost. Get a Written Feasibility Assessment [/contact/ →](/contact/) - Written zoning verification - CAD price bands before deposit - Licensed Ontario Builder, Insured & Bonded