Published 12 September 2026 · By Jatin Dua, Broker of Record, RE/MAX Quantum Realty
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Get My Free Estimate →The Law Society is not the constraint here. The lease is. I could find no Law Society requirement that a licensee or firm maintain a physical office at all, and no specification of what the premises must contain. What the by-laws require is reporting: By-Law 8 makes a licensee file a notice of change for the business address, every name under which they operate, and “the location and account number of any account… into which the licensee pays or paid money received in trust for a client.” Everything else that decides whether a space works for a law office comes from the City and the landlord: whether office use is permitted at that address, whether a change-of-use permit is needed, and what the lease lets you build.
The regulator does not design your office
Sole practitioners come to me expecting a checklist from the Law Society, the way a pharmacy gets one from its regulator. There isn’t one. No minimum size, no required room, no approved layout, no premises inspection before you open the door.
What exists is registration of information. By-Law 8 requires a licensee to file a notice of change for changes in their legal and assumed names, their “business contact information,” whether and in what capacity they are practising, and the location and account number of any trust account. Business contact information includes “all names under which the licensee operates the licensee’s professional business,” the business address, telephone number and e-mail address, and the notice must include details of the change and its effective date.
For a professional corporation, By-Law 7 puts some of that on a public register: the name, the registered office address, the business address if different, the certificate number, any terms or conditions, and any suspension or surrender date.
So a move is a filing. A new trust account is a filing. Neither is an approval. Plan the filings, then spend your energy on what can stop you occupying the space.
| Question about the premises | Who decides it |
|---|---|
| Minimum size, layout, required rooms | Nobody. No Law Society specification exists. |
| Business address on file, names you operate under, trust account particulars | Law Society, by notice of change under By-Law 8 |
| Whether a law office is a permitted use at that address | City of Toronto, under Zoning By-law 569-2013 or a former municipal by-law |
| Whether you need a permit to change the use of the unit | The chief building official, under the Building Code Act |
| Whether you may build a file room or a second meeting room | The landlord, under the alterations clause; then the City, by permit |
| How much of the file room you will need for ten years | By-Law 9 retention periods and the Law Society’s closed-file guidance |
Secure storage is a fit-out requirement, and the by-law sizes it for you
This is the one premises question the Law Society answers, sideways, through the records rules. By-Law 9 requires a licensee to keep most financial records for at least the six-year period immediately preceding the most recent fiscal year end, and seven specific categories, including trust books of original entry, the clients’ trust ledger, records of inter-client trust transfers, bank statements and cleared cheque images, electronic trust transfer requisitions and Teranet records, for at least ten years on the same basis. Records for a mortgage or other charge run at least ten years after the discharge or after the licensee ceases to be trustee.
Client files are looser but longer. The guidance says “you are not required to retain all client files indefinitely” and that, based on the Limitations Act, 2002, “a retention period of 15 years from the date the client file is closed may be appropriate,” while stressing that this “is a general guideline only.” Client identification records run for the longer of the client relationship or six years after the work.
And some of it never goes anywhere. Of original client property, including “corporate minute books or seals or any original testamentary documents such as wills, trusts and powers of attorney,” the guidance is flat: “you must not destroy original client property.” Return it, store it securely, or transfer it to a successor licensee.
Translate that into floor area before you sign anything. You need a lockable, dry, secure room, sized for a decade of paper you are not permitted to discard. The conduct rules reinforce it: a lawyer must take care of client property “as a careful and prudent owner would,” keep it clearly labelled and “distinguishable from the lawyer’s own property,” and maintain records identifying it. In a lease negotiation that means storage area, a door you control, and a landlord who will let you put a lock and shelving in it.
And if the space has no storage, the rent you are comparing is not the rent you will pay.
Zoning: confirm the use, do not assume it
Toronto’s Zoning By-law 569-2013 is city-wide, but the City itself says some properties remain subject to former municipal by-laws, and that some provisions of 569-2013 are under appeal to the Ontario Land Tribunal and “are not in full force and effect.” Site-specific exceptions sit in Chapter 900 and can override the base zone, and the defined meaning of a use term in Chapter 800 controls, not the ordinary meaning. So the map tells you where to start looking. It does not tell you that your use is permitted. Get a City review, in writing, and make the offer conditional on it.
The City sets out four steps: find the property and its zoning category on the interactive map; review permitted uses and conditions in the zone; check for site-specific exceptions in Chapter 900; and review the city-wide and use-specific regulations.
Permissions are layered. In the Commercial Residential zone there is a table of uses permitted outright, a second list permitted only on conditions, then use-specific conditions. In the Commercial Local zone, the uses permitted without conditions under section 30.20.20.10 include office, financial institution, medical office, personal service shop and retail service. Office is a common permission. It is not a universal one.
Two formal City reviews are available, both non-refundable, with fees effective 1 January 2026. A Zoning Use Review assesses “whether the following uses are permitted for a specific location, under the current applicable Zoning By-law,” needs no plans, and costs $214.79 per registered lot. A Zoning Applicable Law Certificate is the detailed pre-permit review “to determine zoning compliance and confirm compliance with other applicable law,” at $214.79 for other proposals, $888.14 for small buildings up to 300 m² and $1,863.82 for larger ones. Correct one thing in older advice while you are at it: the former Zoning Certificate and Preliminary Project Review have been discontinued and replaced by the Zoning Applicable Law Certificate. More on building this into an offer as a zoning condition.
The unit was a nail salon. That is a change of use.
The Building Code Act says that “even though no construction is proposed, no person shall change the use of a building or part of a building or permit the use to be changed if the change would result in an increase in hazard, as determined in accordance with the building code, unless a permit has been issued by the chief building official.” The official must issue the permit unless the proposed use would contravene the Act, the building code “or any other applicable law,” the application is incomplete, or fees are unpaid.
Note the phrase “any other applicable law.” That is the hook that makes zoning compliance a condition of getting the permit, which is why the two questions have to be answered together rather than in sequence.
The City of Toronto states the rule more bluntly than the statute does: a permit is required to “change a building’s use (i.e. from residential to office…),” and “even if no construction is proposed, if a change of use is proposed a building permit is required.” It also warns that “even if a building permit is not required, compliance with the Zoning Bylaw is required.” Inside Toronto, treat the City’s formulation as your operating rule and confirm with the chief building official. The current Code is O. Reg. 163/24, amended repeatedly through 2025 and 2026, so anyone quoting a Code provision should be quoting the current version. If work is involved, a building permit condition belongs in the offer.
Confidentiality is a floor plan problem
The Law Society does not tell you how to lay out a suite. The duty of confidentiality and the duty to safeguard client property do not come with dimensions. But they are the reason a law office cannot be an open bench and a coffee table, and the reason I ask different questions on a legal fit-out than on a general office.
The questions worth asking on a viewing are about separation, not finishes. What is the demising wall made of, and does it run to the deck or only to the ceiling grid? Does the return air path connect your meeting room to the suite next door? Can a person at reception see a file on the assistant’s desk, or hear the call behind them?
Every fix is an alteration, and alterations run through the landlord: the alterations clause, the consent, the requirement to use the landlord’s contractor if the lease says so, and the restoration obligation at the end of term, which quietly decides what your build-out really costs. Settle that language before you fall in love with a floor plan. I have written about the lease clauses that decide the economics.
Accessibility: what AODA reaches, and what it does not
The Integrated Accessibility Standards Regulation attaches obligations to the business by size, not to the premises.
| Employees | What the IASR requires |
|---|---|
| 1 to 19 | Accessibility policies (documentation optional), staff training, accessible customer service and employment practices, accessible information on request, kiosk planning, accessible public spaces on new construction and renovation. No compliance report. |
| 20 to 49 | All of the above, plus filing an accessibility compliance report every three years. |
| 50 or more | All of the above, plus documented policies, a multi-year plan reviewed every five years and posted online, written training records, documented accommodation processes, and accessible public websites. |
The next reporting deadline for businesses with 20 or more employees is December 31, 2026, and the province warns that failing to file “could face enforcement measures which can include financial penalties.”
On the premises side, the Design of Public Spaces standard applies to public spaces “newly constructed or redeveloped” on and after the compliance schedule dates: 1 January 2017 for large organizations, 1 January 2018 for small ones. “Redeveloped” means “planned significant alterations to public spaces, but does not include maintenance activities, environmental mitigation or environmental restoration.” That is the trigger test. A repaint is not a trigger. A planned significant alteration is.
The standard covers exterior paths of travel, accessible off-street parking, outdoor eating areas and play spaces, and obtaining services, including service counters. Counter requirements bite “when constructing new service counters, which includes replacing existing service counters,” so replacing the old reception desk engages the rule: the new counter must accommodate a mobility aid, with a usable countertop height, knee clearance where a forward approach is needed, and clear floor space in front. Note the scope limit. The standard governs the listed public spaces, not the inside of your suite; barrier-free requirements for building interiors sit in the Ontario Building Code, which is a question for your designer and the chief building official.
The short version
There is no Law Society specification for a law office. There is a duty to report your business address, the names you operate under and your trust account particulars, and there are record retention clocks that size your file room: six years and ten years for financial records, ten years for mortgage records, a fifteen-year guideline for closed client files, and a flat prohibition on destroying original client property. Everything else is commercial. Confirm the zoning in writing, assume a change-of-use permit until the City says otherwise, settle alterations and restoration before you design the suite, and put all of it inside a lease review condition with enough days to actually do it.
Signage, parking and the small clauses that turn into arguments
On signage, two systems are in play and neither is the Law Society. The by-laws care about the name you practise under, because business contact information includes “all names under which the licensee operates the licensee’s professional business.” The sign itself is governed by the lease’s signage clause and by municipal sign permitting. Ask what fascia, door, directory and pylon rights come with the unit, whether they are exclusive, and get the answer into the lease rather than into an email from a leasing agent.
On parking there is no professional rule at all. What there is: the IASR’s accessible off-street parking requirements where a parking area is newly constructed or redeveloped, and whatever the lease allocates. Ask how many stalls are reserved rather than shared, whether visitor parking is controlled by the landlord or a third-party operator, what the monthly charge is and whether it can rise during the term, and what happens to your clients when the plaza is full. That is a parking clause question, and it belongs in the offer.
If you are buying the building instead of leasing it
Three things change. Land Transfer Tax: Ontario’s commercial rate tops out at 2.0% on consideration above $400,000, and Toronto’s Municipal Land Transfer Tax has applied to all properties in the City in addition to the provincial tax since 1 February 2008, with its own 2.0% top tier on the same threshold. Combined, 4.0% above $400,000. HST: where a registrant purchaser acquires commercial real property the supplier generally does not collect, the purchaser self-assesses, and an input tax credit is generally available where the property is used in commercial activities.
And environmental exposure. An order under the Environmental Protection Act can reach “a person who owns or owned or who has or had management or control of an undertaking or property,” without regard to fault. Where the property was ever a garage, a bulk liquid dispensing facility including a gasoline outlet, or used for dry cleaning equipment, a Phase Two assessment is mandatory before a record of site condition can be filed, even on a clean Phase One. That is what environmental clauses are for.
What belongs in the lease review condition
A lease review condition is not a formality. For a law office it should give your lawyer time to read, and you time to get City confirmation, on at least the following.
Permitted use. Does the clause name a law office, or something narrower you will be asked to justify later? Is there an exclusivity in another tenant’s lease that cuts across it?
Assignment. The Commercial Tenancies Act deems a covenant against assigning without consent to be subject to a proviso that consent “is not to be unreasonably withheld,” but only “unless the lease contains an express provision to the contrary.” A lease can validly give the landlord absolute discretion. Your exit, retirement or merger will one day turn on this clause, so read it now. And a consent, once given, extends “only to the permission actually given.”
Alterations and restoration. What you may build, whose contractor, and what you must remove at the end.
Hours, HVAC and after-hours charges. Lawyers work when the building is closed. Get the base hours and the after-hours rate in writing.
Estoppel certificate. No Ontario statute governs estoppel certificates in commercial leases; they are contractual documents, and what you sign is what you are later held to. Have counsel read every one before it goes back.
I read the lease before the offer goes out. I would rather lose a week at the front end than find out in year three that the storage room was never yours. More on the mechanics in my piece on the lease review condition.
Does the Law Society require a lawyer to have a physical office?
I could find no such requirement, and no specification of what premises must contain, in the Law Society’s by-laws. What the by-laws require is that a licensee report a business address and keep it current: By-Law 8 mandates a notice of change for business contact information, which is defined to include the business address, the business telephone number, the business e-mail address and all names under which the licensee operates. Professional corporations also appear on a public register showing their registered office and business address.
What does the Law Society require me to tell it when I move?
File a notice of change. By-Law 8 requires notice for changes in a licensee’s legal and assumed names, business contact information, information about whether and in what capacity they are practising, and information about the location and account number of any account into which money received in trust for a client is paid. The notice must include details of the change and its effective date. A move and a new trust account are both filings; neither is an approval you wait for.
How much storage does a small law office actually need?
No rule gives you a number, and I will not invent one. What sets it is the retention clocks: at least six years for most By-Law 9 financial records, at least ten for trust books, the trust ledger, inter-client transfers, bank and cheque records, electronic trust transfers and Teranet records, at least ten years after discharge for mortgage records, and a Law Society guideline of fifteen years from closing for client files. Original client property, including wills and minute books, must not be destroyed at all.
Is office use automatically permitted in a Toronto commercial unit?
No. Permissions are zone by zone. In the Commercial Local zone, office is among the uses permitted without conditions, but other zones differ, some properties remain under former municipal by-laws, site-specific exceptions in Chapter 900 can override the base zone, and the City warns that some provisions of 569-2013 are under appeal and not in full force and effect. Get a Zoning Use Review at $214.79 per registered lot, or a Zoning Applicable Law Certificate if a permit is coming.
Do I need a building permit to turn a retail unit into a law office?
Assume yes and confirm. The Building Code Act requires a permit for a change of use, even with no construction, where the change would increase hazard as determined under the building code. The City of Toronto states the requirement without that qualifier: if a change of use is proposed, a building permit is required. The City also warns that even where no permit is needed, zoning compliance still is. Confirm with the chief building official before you commit.
Does AODA require me to renovate my office?
Not by itself. The Design of Public Spaces standard applies to public spaces that are newly constructed or “redeveloped,” which is defined as “planned significant alterations to public spaces,” excluding maintenance, environmental mitigation and restoration. It covers exterior paths of travel, accessible off-street parking, outdoor eating areas and service counters, and it bites when you replace a service counter. Barrier-free requirements inside the building come from the Ontario Building Code instead. Your designer and the chief building official decide that one.
Can my landlord refuse to let me assign the lease when I retire?
Possibly. The Commercial Tenancies Act deems a covenant against assigning without consent to be subject to a proviso that consent is not to be unreasonably withheld, “unless the lease contains an express provision to the contrary.” A commercial lease can validly give the landlord absolute discretion, and then the proviso does not apply. Where consent is unreasonably withheld, a judge of the Superior Court may make an order that operates as consent. Read the clause before you sign, not when you want out.
How long should the lease review condition be?
Long enough for two things to happen in parallel: your lawyer reading the lease and reporting, and the City confirming the use. The City publishes fees for a Zoning Use Review and a Zoning Applicable Law Certificate but does not publish turnaround times on the pages I reviewed, so I will not promise you a timeline. Build in room, and ask the landlord for it up front rather than asking for an extension later, which is a weaker position.
Sources
- Law Society of Ontario — By-Law 8 (Reporting and Filing Requirements)
- Law Society of Ontario — By-Law 9 (Financial Transactions and Records)
- Law Society of Ontario — Closing your practice: manage closed client files
- City of Toronto — Zoning By-law 569-2013
- City of Toronto — Zoning By-law Chapter 30.20, Commercial Local Zone (CL)
- City of Toronto — When Do I Need a Building Permit?
- Ontario e-Laws — Integrated Accessibility Standards, O. Reg. 191/11
- Ontario e-Laws — Commercial Tenancies Act, R.S.O. 1990, c. L.7
LOOKING AT LAW OFFICE SPACE IN THE GTA?
Send me the address and the draft lease before you sign anything. I will tell you what the zoning question actually is at that property, what the alterations and restoration clauses will cost you at the end of term, and whether the storage you are being shown is enough for the retention periods you are stuck with. Etobicoke, the west end and the wider GTA.
Book a 15-minute call or call or text 833-330-1925.
I am a broker, not your lawyer. On the lease I will tell you which clauses to worry about and then get out of the way of the person who is paid to read them.
More in this series
Jatin Dua is Broker of Record and co-founder of RE/MAX Quantum Realty, Brokerage, Unit 101, 799 The Queensway, Etobicoke. Four-plus years in the GTA and more than $100M in sales volume. He works on commercial and business purchases across Toronto and the west GTA.
This is general professional commentary from a Broker of Record on commercial and business acquisitions in Ontario. It is not legal, tax or accounting advice, and it does not create any professional relationship. Whether a licence transfers, how a purchase should be structured, what tax applies and what a regulator will require on your particular file are questions for your lawyer, your accountant and the regulator itself. Rules, fees and published requirements change — verify anything you intend to rely on against the primary source on the day you rely on it.