Although I have moved out of my condo, I was president of the board of directors for several years concurrent with the drafting of the revised and current Ontario Condominium Act.
Historically, condo developers low-balled monthly fees to make their projects more attractive and it was not unusual to see 100% increases when the building was eventually registered and a realistic budget adopted.
The monthly fee must cover ongoing operating costs (utilities, cleaning, taxes on common areas, staffing) PLUS a reserve for future maintenance and repair costs. Many condo boards, wishing to keep fees low, have underestimated maintenance costs with the result that there were insufficent funds available when high cost repairs became necessary and owners were hit with "special assessments".
The new condo act attemtps to address this problem with strengthened rules about maintenance reserve funds. Now, then the condo building is registered, i.e. ownership transferred from the developer to the new owners, a reserve fund study and financial plan must be completed. The condo board will hire appropriately qualified engineering consultants who will estimate the life expectancy and repair/replacement cost of everything in the building (electrical, plumbing, roof, common area furnishings,... everything). With this information, a financial plan must be developed that ensures sufficient funds will be available years in the future when repairs and maintenance are required. The financial plan is an actuarial plan, taking into account not such things as estimated return on funds invested in the reserve account over the life of the building systems.
The Condo Act requires that the reserve fund and financial plan be updated at regular intervals and revised as necessary.
A new condo should accumulate a substantial reserve fund in the first decade so that funds are available when big ticket expenses come up; e.g heating and a/c equipment may last for 15-20 years but cost hundreds of thousands to replace. My building had over $1 million in the reserve fund when it was about 10 years old but this money could not be used (by law) for routine maintenance or ongoing operating costs. It's purpose was to stay on deposit earning interest for the day when the elevators would need to be replaced, the roof repaired, etc.
Condo owners frequently complicate the issue by wanting renovations or similar changes ahead of the reserve fund estimate; e.g. the corridor carpets and wall-paper may have a life expectancy of 15 but owners want to redecorate after 10 years. The funds that have been put aside for these replacements will likely be insufficient so the board can decide to charge part of the cost to the operating budget or draw down the reserve fund and increase the monthly fee going to the reserve fund in the next annual budget.
Anyone buying in an established condo should see the reserve fund study and financial plan and confirm from the condo's financial statements that sufficient funds are on-hand before finalising a purchase.
Persons buying in a new project can only compare the developers budget to the budget of similar established buildings (3-5 years old would be my guess) to determine if the developer's budget is realistic. Buyer beware.