Office Buildings for Sale in Ottawa

Small office buildings, office condominiums and mixed-use buildings for owner-users and investors across Ottawa and Eastern Ontario.

Office property for sale

Owning your office in Ottawa

For professional firms, clinics and growing businesses, owning an office can fix occupancy costs and build equity instead of paying rent. Office condominiums and small buildings are the most common choices for owner-users.

For investors, today's office market calls for careful underwriting: who the tenants are, how long their leases run, what it will cost to re-lease space, and whether the building has a future as office or another use.

See current listings below and our full office real estate services.

13.7%

overall Ottawa office vacancy, Q2 2026

$17.64

average asking net rent per sq ft

$18.97

average additional rent per sq ft

12.9%

Downtown Core vacancy

Live MLS® listings

Office property for sale in Ottawa

Updated automatically from MLS®.

See all office listings

What to check

Buying an office: owner-user or investor

Owner-user fit

Size, layout, parking, accessibility and image for your firm, now and in five years.

Condo documents

For office condos: fees, reserve fund study, rules on use and signage, and any special assessments.

Tenancies

For investment buildings: tenant strength, lease terms and renewal risk.

Re-leasing cost

Improvements, incentives and downtime needed to re-lease vacant space.

Building systems

HVAC, elevators, roof and accessibility upgrades.

Future use

Zoning for other uses, including residential conversion, where it may apply.

Tell us what you are looking for

Explore

More Ottawa office real estate

Office space for lease

Downtown and suburban offices, suites and floors.

Medical and clinic space

Clinic, dental, therapy and health care space.

Leasing your office space

How we help landlords fill vacancies.

Ottawa Office Buildings FAQs

Should my business buy or lease an office?

Buying fixes your cost and builds equity but ties up capital; leasing keeps flexibility. We compare both on the same basis over your planning horizon.

What is an office condominium?

A unit you own within a larger office building, with shared common areas managed by a condominium corporation. It suits firms that want ownership without buying a whole building.