Masonry Construction Services in Toronto and the GTA
Masonry construction is the oldest building method still in active commercial use, and the standards have not changed in any way that matters in fifty years. A mason still sets brick or stone on mortar, plumbs the wall, ties it to the structure, and lets the assembly cure. What has changed is the surrounding ecosystem — engineered foundations, OBC compliance paths, mortar science with named ASTM standards, energy code performance requirements. We provide masonry construction services across Toronto and the Greater Toronto Area on residential new builds, commercial buildings, foundation and structural masonry, and additions. Few masonry contractors in Toronto run the full range. Most masonry companies either do small homeowner masonry repairs or large commercial scopes. We run both. From a single chimney rebuild or a piece of brick repair up to a full custom-home envelope, the same masonry service standards apply. Each masonry project gets the same craftsmanship and masonry work discipline regardless of size.
What masonry construction actually is
Masonry construction means brick, stone, or concrete block units bonded with mortar into structural or non-structural walls. Two structural categories cover the work. Load-bearing masonry, where the wall carries the weight above. Veneer masonry, where the wall is exterior cladding over a separate structural frame (wood, steel, or concrete block). Toronto residential is mostly veneer over wood. Commercial is mixed. Heritage is full-bed load-bearing, often laid in original lime mortar that wants NHL5 hydraulic lime when repointed today. Standards we work to: ASTM C216 face brick, ASTM C90 concrete block, ASTM C270 mortar (Type M, S, N, O), CSA A371 cladding, OBC Section 9.20.
Types of masonry construction we run
Five categories cover almost every project we quote across the GTA:
Residential new build masonry. Full-bed brick or stone exterior on custom homes. ASTM C216 face brick, ASTM C568 limestone, ASTM C615 granite. Foundation engineered to carry the weight. 4 to 12 weeks of masonry phase on a typical 3,500-square-foot home.
Commercial new build masonry. Brick veneer over concrete-block backup wall, full-bed masonry on monumental scopes. CSA A371 cladding compliance. Swing stage and scaffold logistics from day one. Project schedules run 8 to 24 weeks of masonry phase.
Foundation and structural masonry. Concrete-block foundations (ASTM C90), reinforced concrete masonry units, parging on foundation walls below grade, structural piers and columns. Type M or Type S Portland mortar (ASTM C270) for structural strength.
Heritage and restoration construction. Replicating pre-1930 wall sections in NHL5 lime mortar with salvage brick, period-correct profiles, hand-finished detailing. Toronto Heritage Preservation Services oversight. Parks Canada standards apply.
Additions and retrofits. Brick or stone added to an existing house — bump-outs, wing additions, garage walls, foundation extensions. Coordinated with the framer, inspector, and HPS reviewer when applicable.
How we run a masonry construction project
The cadence is consistent across scope sizes:
1. Architectural and structural coordination. First call usually with the architect or general contractor. Wall sections, brick and stone selection, mortar joint profile, structural ties, expansion joint locations, flashing details all get specified. The drawings need detail down to the brick course.
2. Permits. Toronto building permit issuance runs 8 to 16 weeks for new builds. HCD heritage approval adds 4 to 12 weeks. We file the masonry-specific portion; the architect or GC handles the umbrella.
3. Foundation prep. New builds spec a deeper or wider footing for full-bed masonry. Concrete-block foundations need to cure before the masonry above starts.
4. Framing and weather barrier. Wood or steel framing goes up. Sheathing, then a high-perm WRB before any masonry.
5. Masonry phase. Brick and stone laid course by course from the foundation up. Mortar joints tooled to spec — concave, weathered, raked, flush. Brick ties driven into the framing every 16 inches vertical, every 32 inches horizontal. Air gap of 1 inch behind the masonry. Weep holes every 24 inches at the base, every horizontal interruption, and at flashing transitions.
6. Cure and inspection. Mortar reaches full strength at 28 days. Building inspector reviews structural masonry, weep holes, ties.
7. Walk-through. We document the wall section, where the weep holes are, what to watch for in the first decade.
Materials and standards we work with
GTA-stocked materials we work with daily:
Brick. ASTM C216 face brick. Brampton Brick, Glen-Gery, Cooksville stock. Salvage Don Valley red for pre-1930 heritage matching. Engineering brick (ASTM C652) where structural strength carries the spec.
Stone. ASTM C568 limestone (Indiana, Eramosa). ASTM C615 granite. ASTM C616 sandstone (Owen Sound Ledgerock). Wiarton dolomite. We quarry locally where possible.
Mortar. ASTM C270 covers four types. Type M at 17.2 MPa for structural foundations. Type S at 12.4 MPa for load-bearing exteriors. Type N at 5.2 MPa for non-load-bearing above-grade. Type O at 2.4 MPa for interior repair. NHL5 hydraulic lime steps in for pre-1930 heritage. ASTM C199 calcium aluminate handles refractory firebox lining.
Reinforcement. Hot-dip galvanized brick ties. Stainless steel ties on high-exposure or corrosive walls. Horizontal joint reinforcement per ASTM A951 on tall walls.
Code compliance, OBC, and energy performance
Ontario Building Code Section 9.20 covers residential masonry. Section 11 covers building envelope. Section 9.36 covers energy efficiency. Modern envelope assemblies have to meet Toronto SB-12 performance paths, which credit the thermal mass of full-bed masonry. CSA A371 is the cladding standard cited by inspectors. Heritage scopes also fall under the Ontario Heritage Act (Part IV designated buildings, Part V Heritage Conservation Districts). We document every project to satisfy the engineer of record, the building inspector, and HPS. See our brick masonry, stone masonry, custom masonry homes, and commercial masonry restoration pages for related scope.
Frequently asked questions
How long does masonry construction take on a typical project?
Residential new build masonry phase runs 4 to 12 weeks, depending on size and weather. Commercial work runs 8 to 24 weeks. Additions run 2 to 8 weeks. Mortar cure adds 28 days before any heavy load is applied above.
What does masonry construction cost in Toronto?
Residential new build: $40 to $75 per square foot of envelope for full-bed brick, $90 to $200 for full-bed stone. Commercial veneer: $25 to $55 per square foot. Foundation work and additions priced separately on scope. Honest ranges from our 2026 project log.
Do you handle architectural coordination?
Yes. We meet with architects and structural engineers during design development, advise on wall sections and brick or stone selection, and produce shop drawings for the masonry portion of the bid set.
Are permits and inspections included?
We file masonry-specific portions of the building permit, coordinate with the architect or GC on the umbrella permit, and handle building inspector visits during the masonry phase. Inspection fees are part of the project budget.