What Every Condo Buyer Should Know Before Signing

What interim occupancy is

When a condominium is built, individual units are typically ready before the entire building is registered as a condominium corporation under Ontario's Condominium Act, 1998. The building registration process involves finalizing the common areas, obtaining occupancy permits, completing audits, and filing documents with the province. This takes time — usually 6 to 18 months after the first units are available, though some buildings take longer.

During this waiting period, buyers are allowed to move into their units under an "interim occupancy" arrangement. You have physical possession of your unit, but you do not hold title. The builder still legally owns the property. Your mortgage has not yet activated. Instead, you pay the builder a monthly interim occupancy fee — sometimes called an IOF — in lieu of a mortgage payment.

This arrangement is governed by the Condominium Act and your purchase agreement. It is unique to condo purchases. Freehold pre-construction homes (detached, semi-detached, and many townhouses) close directly — there is no interim occupancy period, and your mortgage begins on closing day.

How the interim occupancy fee is calculated

The monthly interim occupancy fee has three components, all set by the builder:

• Interest on the unpaid balance: The outstanding purchase price minus your deposits, multiplied by the prescribed interest rate. The rate is set by regulation under the Condominium Act and is currently the Bank of Canada mortgage rate plus 2% (it changes annually).
• Estimated property tax: The builder's estimate of your unit's share of the annual property tax, divided by 12.
• Estimated maintenance fees: The projected monthly condo fee for your unit, based on the budget prepared by the builder.

As an example: on a $750,000 condo where you've paid $150,000 in deposits, the unpaid balance is $600,000. At a prescribed rate of 5.5%, the interest component alone is $2,750 per month. Add $350 for estimated taxes and $650 for maintenance fees, and your total interim occupancy fee is approximately $3,750 per month — none of which goes toward paying down your mortgage.

The key point: interim occupancy payments are not mortgage payments. They do not reduce your purchase price or build equity. When final closing comes, you still owe the full unpaid balance on the purchase price.

Who sets the fee and can it change

The builder calculates the fee using the formula set out in the Condominium Act. The prescribed interest rate is fixed annually on January 1 — so the rate applicable to your interim occupancy period depends on when you occupy, not when you signed. This means the fee can be higher or lower than you modelled at purchase time if the prescribed rate changes.

The estimated maintenance fee and property tax components are projections. If the building's actual expenses differ from the estimates, your interim fee adjustments are limited by the Act — the builder cannot charge you significantly more than the amounts disclosed in the disclosure statement without consequence.

The interim occupancy fee statement must be given to you before each monthly payment is due. Review each statement against your purchase agreement and the formula above. If you believe a fee has been calculated incorrectly, your lawyer can assist.

How long interim occupancy lasts

The interim occupancy period ends on the final closing date — when the condominium corporation is registered and title transfers to you. The registration date is not fully within the builder's control; it depends on how quickly the province processes the registration, which is affected by the building's construction progress, any outstanding deficiencies, and the municipal permitting timeline.

Most interim occupancy periods run 6 to 18 months. Some stretch to 24 months in complex projects. This is not unusual, but it is a real cost. Buyers who plan to live in the unit carry the fee as their housing cost — buyers who planned to rent often can, since the Condominium Actpermits leasing during interim occupancy with the builder's consent (and many builders include assignment and leasing rights in the agreement, or grant them on request).

Your rights during interim occupancy

During interim occupancy, the Condominium Act grants you meaningful protections. You have the right to possession and exclusive use of your unit. The builder cannot access your unit without notice (except in emergencies). You are entitled to use all common amenities as if you were an owner. The Residential Tenancies Act does not apply to interim occupancy — this is a statutory arrangement unique to condominiums.

You do not yet receive a key to your mailbox or your assigned parking and locker storage in all cases — these may be held back until final closing depending on the builder's practices and your agreement. Your purchase agreement and the builder's interim occupancy letter will specify what is included.

You are responsible for the contents of your unit during interim occupancy. Your builder's insurance covers the building structure, but you should obtain contents and personal liability insurance from day one of occupancy.

Condos vs. freehold: a fundamental difference

Freehold pre-construction homes — including most detached homes, semi-detached homes, and many townhouses — do not have interim occupancy. When construction is complete and you receive the keys, you own the property. Your mortgage begins that day. There is no gap period and no interim fee.

Some townhouses are condominium townhouses (where common elements like driveways and laneways are shared through a condo corporation). These do have interim occupancy periods, same as a high-rise condo. If you're unsure whether a townhouse you're considering is freehold or condominium, ask the sales rep and confirm in the APS. The disclosure statement will also make this clear.

When comparing a condo and a freehold home at similar prices, factor the interim occupancy cost into your total purchase analysis. A condo that seems $50,000 cheaper than a comparable freehold home may cost you $40,000–$60,000 more in total once you account for 12–18 months of interim occupancy fees.