Medical Office Construction Cost in Ontario: Class D Cost Guide
What it costs to build a medical office building (MOB) or fit out a clinic inside an existing office or retail building in Ontario, anchored in Q4 2025 benchmark data. This guide separates the new-build shell from the clinic fit-out, explains why medical MEP drives the premium over standard office space, and flags the occupancy, X-ray shielding, medical gas and barrier-free requirements that shape the budget before design starts.
Class D conceptual range for feasibility planning. Not a quotation, tender, financing basis, or contract value.
Run a Medical Office Estimate Back to Cost GuidesMedical office building and clinic fit-out costs in Ontario
A Class D conceptual range, accurate to roughly ±20–30% under AACE 18R-97. The MOB band is carried on a preliminary basis in our data layer and should be read with that caveat. Use these figures before a full quantity survey or tender package exists, and read every number as a band, not a single price.
C$380–580
per sq ft, GTA core new-build medical office building shell and core (preliminary)
C$320–490
per sq ft, secondary Ontario markets, new-build MOB shell and core (preliminary)
×1.35
high-spec MEP factor applied to a standard office fit-out to reach a clinic fit-out band
±20–30%
Class D accuracy band, Q4 2025 benchmarks
Included in the range
Base building shell, structure, envelope, medical-grade MEP, standard sitework, permits, design, contingency, and development charge exposure. For fit-outs: partitions, ceilings, finishes, plumbing, HVAC and electrical distribution within the leased premises.
Usually excluded
Medical and dental equipment, imaging units, furniture, IT hardware, land, financing, leasing costs, landlord base-building upgrades outside the premises, and owner business costs such as licensing and staffing.
Best used for
Early feasibility for a new MOB, lease-versus-build comparison, landlord inducement negotiations, clinic expansion planning, and deciding when engineering review is needed before a lease or purchase is signed.
How a medical office budget builds up, step by step
Medical space is priced in two distinct ways: a new-build MOB is a shell-and-core project, while most clinics are fit-outs inside someone else's building. Each step adds to or adjusts the one before it.
- 1
Pick the right starting band: new MOB or clinic fit-out
The first decision is whether the project is a building or a tenant improvement. The two bands are not interchangeable.
New-build MOB, GTA core
C$380–580 per sq ft
Toronto, Mississauga, Brampton, Markham, Vaughan and comparable markets. Shell and core with medical-grade base building systems, before tenant fit-out. Carried on a preliminary basis from Altus 2025 and the Infrastructure Ontario capital cost data.
New-build MOB, secondary Ontario
C$320–490 per sq ft
Hamilton, Kitchener-Waterloo, London, Ottawa, Durham and similar markets. The same code and MEP requirements apply, so the discount versus the GTA is narrower than for warehouse or retail shell.
Clinic fit-out, GTA core
≈ C$245–350 per sq ft
Derived from the standard office fit-out band of C$180–260 per sq ft with the 1.35 high-spec MEP factor applied. Covers a family practice, walk-in, physiotherapy or specialist clinic inside an existing office or retail building with adequate base-building capacity.
Clinic fit-out, secondary Ontario
≈ C$190–285 per sq ft
The secondary office fit-out band of C$140–210 per sq ft with the same 1.35 factor. If the base building needs electrical, water or HVAC capacity upgrades to carry the clinic, add the allowances in step 2.
Worked example: a 4,000 sq ft family-practice clinic fit-out in a GTA office building sits around C$0.98M–C$1.40M in hard cost at the derived band. Add the 18–28% soft-cost overlay and the planning budget is roughly C$1.16M–C$1.79M, before medical equipment, furniture, IT hardware and any landlord base-building work. - 2
Adjust for what moves the cost
Medical fit-outs exceed standard office TI because of what sits behind the walls and above the ceiling, not because of the finishes you can see. The programme drives the number.
Exam-room density and plumbing
Every exam room carries a hand-wash sink, which means supply, drain and vent to each room rather than to a central washroom core. More rooms per square foot means more plumbing per square foot. Where the base building cannot deliver the water pressure or flow, a water service upgrade allowance of C$30k–150k may apply.
Imaging, X-ray and shielding
A general radiography or dental X-ray room needs lead-lined partitions, doors and sometimes floors or ceilings, with the shielding design reviewed and approved before the equipment is energized (see step 5). An electrical capacity upgrade allowance of C$50k–250k is common when the base building was designed for standard office loads.
Dental operatories
Each operatory carries dedicated hot and cold water, drainage, suction and compressed-air lines to the chair, plus chair-side power and data. A central mechanical room houses the compressor, vacuum pump and amalgam separator. Operatory count, not floor area, drives the cost of a dental fit-out.
HVAC zoning, filtration and finishes
Clinics need more zones than open-plan offices, often with higher ventilation rates, exhaust from procedure and soiled rooms, and upgraded filtration. Infection-control finishes (seamless sheet flooring with coved base, washable wall protection, solid-surface counters, hands-free fixtures) cost more than carpet and laminate. This is why the 1.35 MEP factor applies.
Scale note: the size multiplier in our data layer applies 1.10 to projects under 5,000 sq ft. Many single-practice clinics fall in this band, so a small fit-out tends to price toward the upper end of the range on a per-square-foot basis. - 3
Add soft costs, commissioning and the equipment exclusion
The construction number is the base. A medical project carries a fuller soft-cost stack than a warehouse because of Part 3 design, commissioning and specialist engineering.
Design, permits and Part 3
Design fees commonly run 5.5–12% of hard cost. A clinic over 600 m² or in a building over three storeys falls under OBC Part 3, which adds roughly 1.5–3% to design fees compared with Part 9. Toronto building permit fees add about 0.8–1.8%, with plan review a further 0.2–0.6%.
Commissioning and specialist engineering
An independent commissioning authority for the MEP systems runs about C$20k–60k and is standard for medical office buildings. Where medical gas is installed, medical gas engineering and CSA Z7396.1 certification add C$25k–75k. Telecom, IT and security rough-in for an office or MOB runs C$25k–80k.
FF&E, contingency and total overlay
About 18–28% on top of hard cost
FF&E for medical office sits in the office band at 6–12% and covers furniture, casework and IT hardware. Medical and dental equipment is owner-supplied and excluded from both the hard cost and the FF&E allowance. Class D contingency commonly sits at 8–15%.
Equipment is the owner's line: imaging units, dental chairs, sterilizers, lab analyzers and exam tables are procured by the operator, often on lease. The construction budget must still carry the rough-ins, structural support, shielding and electrical capacity those units need, so equipment selection must be frozen before construction documents are issued. - 4
Check municipal classification, parking and site plan
For a new MOB, municipal inputs can move the budget before the design changes at all. For a fit-out, zoning and parking decide whether the premises can be a clinic at all.
Development charge classification
Medical office usually falls in the commercial or non-residential DC class, but some by-laws treat health uses as institutional. The spread is material: Toronto's commercial rate is about C$58.7 per sq ft of GFA against roughly C$34.2 in Kitchener-Waterloo, with Mississauga, Markham and Brampton above the Toronto figure. Confirm the classification in writing with the municipality before the pro forma is finalized.
Parking ratios for medical use
Most Ontario zoning by-laws assign a higher minimum parking ratio to medical offices and clinics than to general office, reflecting patient turnover. An existing office or retail building that meets its own parking requirement may not meet the medical ratio, which can block the use, trigger a minor variance, or require a cash-in-lieu payment. Check this before signing a lease.
Site plan approval
A new MOB will go through site plan control, with accessible parking, drop-off and barrier-free path-of-travel requirements that are more demanding than for a general office building. Allow for review time and the 0.5–2% feasibility and site plan share of the design fee.
Change of occupancy
Converting a retail unit or a general office floor to a clinic may constitute a change of major occupancy under the OBC, which triggers a full code review of the existing building. Where this applies, the data layer carries C$50k–500k+ and 4–12 weeks for the review and any resulting upgrades, depending on the building's age and condition.
- 5
Flag regulatory triggers early
Medical projects carry approvals that general office and retail work does not. Each has a lead time and is cheaper to design in than to retrofit.
OBC occupancy classification
An outpatient clinic where patients are ambulatory and do not stay overnight is generally classified as Group D (business and personal services) under the OBC. Where occupants receive treatment and depend on staff for evacuation, or where overnight care is provided, the project may fall into Group B (care or treatment), which brings substantially higher fire separation, sprinkler and construction requirements. Confirm it at concept stage; it governs most other code decisions.
X-ray rooms and HARP approval
Under Ontario's Healing Arts Radiation Protection Act, the shielding plan for a new or relocated X-ray installation is reviewed and approved by the Ministry of Health's X-ray Inspection Service before the room is used. Shielding depends on equipment, workload and adjacent occupancies, so the layout must be fixed before the specification is issued.
Medical gas and health-care design standards
Where oxygen, medical air or vacuum are piped, the installation is designed, installed and certified to CSA Z7396.1, which is a separate engineering and testing scope from ordinary plumbing. Larger clinics and facilities with procedure rooms may also reference CSA Z8000 (health care facilities) and CSA Z317.2 (HVAC in health care facilities) for ventilation and infection prevention and control, which raises the HVAC specification above office practice.
Barrier-free design and sprinklers
A public-facing health-care use should be planned to full barrier-free scope under OBC Section 3.8 and the AODA Design of Public Spaces standard, adding about 1–3% to hard cost on new construction and a C$25k–150k upgrade allowance in an older building. Where sprinklers are required under OBC 3.2.5 and the base building is not sprinklered, allow C$5–10 per sq ft of hard cost.
When to bring in engineering review: the Class D band becomes less reliable with imaging suites, medical gas, a possible Group B classification, a change of occupancy in an older building, or construction value above roughly C$15M. Confirm the occupancy, base-building capacity and shielding requirements before treating the budget as actionable.
Medical office construction cost FAQ
How much does it cost to build a medical office building in Ontario?
On a preliminary Q4 2025 basis, a new-build medical office building shell and core runs about C$380–580 per sq ft in the GTA and C$320–490 per sq ft in secondary Ontario markets, before soft costs, development charges and owner-supplied medical equipment.
How much does a clinic fit-out cost inside an existing office building?
Applying the 1.35 high-spec MEP factor to a standard office fit-out band gives roughly C$245–350 per sq ft in the GTA and C$190–285 per sq ft in secondary Ontario markets. Imaging rooms, dental operatories and procedure rooms push toward or past the top of the band.
Why does a medical fit-out cost more than a standard office fit-out?
Plumbing density (a sink in every exam room), zoned and filtered HVAC, electrical capacity for imaging, lead shielding in X-ray rooms, cleanable infection-control finishes and full barrier-free scope all add cost that a standard office TI does not carry.
Where these medical office cost figures come from
The ranges on this page are assembled from published Canadian cost references, Ontario municipal and regulatory inputs, and our own recent project pricing, then indexed to the Q4 2025 basis quarter stated in the header. The MOB shell-and-core band is carried as preliminary and the clinic fit-out band is derived by applying the high-spec MEP factor to the office fit-out band. They are planning benchmarks, not a quotation.
Published cost references
Altus Group Canadian Cost Guide 2025 (Ontario and GTA unit-rate bands, including medical office); Infrastructure Ontario project database and capital cost guidance for health-related building types; RSMeans / Gordian Canada 2025 construction cost data with Toronto and regional Ontario city cost indexes; Statistics Canada Building Construction Price Index (Toronto CMA, non-residential) for indexing published figures to the basis quarter.
Municipal and regulatory inputs
Development charge by-laws and rate schedules of GTA and secondary Ontario municipalities (including Toronto, Peel, York, Halton, Durham and Waterloo); municipal zoning parking standards for medical uses; Ontario Building Code occupancy, barrier-free and sprinkler provisions; Healing Arts Radiation Protection Act requirements for X-ray installations; CSA Z7396.1, Z8000 and Z317.2 as they apply to clinic design.
Project experience
Recent ProWise Construction tender pricing and ProWise Engineering design and permit work on clinic fit-outs and health-related tenant improvements in the GTA, including plumbing-dense exam room layouts, HVAC rezoning and electrical capacity upgrades in existing buildings. We use this to sanity-check published bands against actual trade quotes, not to replace them.
Run the calculator before treating a clinic budget as fixed.
Use the calculator for a Class D feasibility range. If the project includes imaging, medical gas, a possible change of occupancy or an older base building, move into a detailed estimate inquiry.
Run a Medical Office Estimate Request a Detailed EstimateClass D conceptual estimate per AACE International Recommended Practice 18R-97. Not a quotation. Not a basis for financing or contract value. Material decisions require qualified engineering and quantity-surveying review. Q4 2025 benchmarks include public and industry cost references used for early planning context.