The cost that continues after the purchase is done
Transaction costs are paid once. Service charges are paid for as long as you own the property, they rise, and they are not optional. In an apartment building, a gated development or any scheme with shared parts, a portion of the building’s running cost is allocated to your unit whether you live there, let it or leave it empty. Owners who model a purchase carefully and then treat the service charge as a rounding item are usually the ones surprised later, because the surprise arrives as a lump sum rather than as a monthly creep.
The names differ: condominium fees, community fees, owners association dues, common charges, maintenance fees, service charge plus ground rent. The structure underneath is remarkably consistent.
Four buckets
1. The annual operating budget
Predictable recurring costs of running the building: cleaning, common area power, lift servicing, communal water and heating, gardening, security, waste, building insurance, the management fee, accountancy and minor repairs. It is set annually, usually approved at a general meeting of owners.
2. The reserve or sinking fund
A contribution towards large future items with long lives: roof, facade, lifts, boilers, windows, drainage, car park structure. A well-run building collects this steadily so that replacement is funded when it falls due. A building that keeps charges low by collecting little or nothing is not cheaper. It has deferred the cost and made it lumpier.
3. Special assessments
A one-off levy when a cost exceeds what the reserve holds. This is where the real risk sits for an owner, because it can be several times the annual charge and is payable on a short timetable.
4. Unit-specific charges
Parking space, storage unit, individual utility metering, a separate charge for use of facilities, and in some systems a ground rent or long lease rent that is entirely separate from the service charge.
How your share is calculated
Your bill is rarely a flat fee. It is a share of the whole:
Your annual charge = total building budget x your participation share
The participation share is fixed in the building’s constitutional document and is normally one of: proportional to your unit’s floor area, a coefficient set at the time the building was divided, or an equal split per unit. Coefficients can be weighted for factors such as floor level or exclusive use of a terrace. Some costs are apportioned differently from others, for example lift costs excluded for ground floor units, or heating apportioned by consumption. The document that defines this is the one to read, not the agent’s estimate.
Worked example
These figures are invented to illustrate the arithmetic and describe no real building.
Suppose a building’s approved annual operating budget is 96,000 in local currency, and the annual reserve fund contribution is 24,000. The total to be apportioned is 120,000. Suppose your unit’s participation share, as recorded in the constitutional document, is 1.85 percent.
Your annual charge is 120,000 x 0.0185 = 2,220, which is 185 per month.
Now suppose the lift needs replacing at a cost of 160,000 and the reserve fund holds 90,000. The shortfall is 70,000, raised by special assessment. Your share is 70,000 x 0.0185 = 1,295, payable within that year.
Your building cost in that year becomes 2,220 + 1,295 = 3,515, an increase of 58 percent over the normal year. Note what drove it: not the size of the lift bill, but the fact that the reserve was funded to only 56 percent of the requirement. Two buildings with identical annual charges can carry completely different exposure depending on the reserve position, which is why the reserve balance is worth as much attention as the charge itself.
| Line item | What it covers | What drives it up | Question to ask before buying |
|---|---|---|---|
| Lifts | Servicing contract, inspections, repairs | Age, number of lifts, number of floors served | How old are they, and when are they scheduled for replacement? |
| Building insurance | Structure, common parts, liability | Location exposure, claims history, rebuild cost inflation | What is the current premium and has it been reviewed recently? |
| Concierge or security | Staff hours, cover, payroll costs | Hours of cover, statutory employment costs | Is the service staffed directly or contracted, and on what notice? |
| Pool, gym, gardens | Plant, chemicals, staff, water, seasonal work | Size, opening season, water and energy prices | What did these cost last year as a separate line? |
| Management fee | Administration, accounts, meetings | Number of units, scope of contract | What is the fee, and what is expressly outside it? |
| Reserve contribution | Future major works | Building age, condition survey findings | What is the current balance against the works schedule? |
Documents to request before you commit
- The last two or three years of approved accounts, not a summary.
- The current year budget, line by line.
- The reserve fund balance and any long-term maintenance plan.
- Minutes of recent general meetings, where forthcoming works are discussed before they are approved.
- The arrears schedule for the building, since heavy arrears mean other owners’ shortfalls land on those who do pay.
- A written statement of the seller’s account status, and confirmation of whether unpaid charges attach to the unit or remain a personal debt of the seller. This differs by jurisdiction and is one of the most consequential differences you can encounter.
- The constitutional document setting participation shares and any special apportionment rules.
- Any rules restricting letting, short lets, pets or alterations, since these affect both use and resale.
Reading the trend, not the snapshot
One year’s charge tells you little. Three years of accounts tell you the direction, whether the reserve is growing or being consumed, and whether the budget is regularly overspent. We would treat a building with a falling reserve, rising arrears and ageing plant as carrying a cost that has not yet appeared on any invoice.
The legal framework for owners associations, the enforceability of charges, and whether debts follow the property all differ by country. This explains how these systems are built, not what the law says where you are buying, and we would have the building documents reviewed by a qualified local lawyer before exchange.
How to Use This Guide
Every worked example on this page is illustrative. The figures are chosen to show how the calculation behaves, not to report current market rates. Costs, tax rules and eligibility criteria differ by country and change over time, so take the method from this page and put your own current figures into it. Browse the rest of our guides, or see how we source and check our comparison figures on the about page.
Information only. This article explains how costs and rules are structured. It is not financial, tax, legal or immigration advice, and it is not a recommendation to buy any property, vehicle or investment. Confirm anything that affects a decision with the relevant local authority or a qualified professional before you act on it.
Last updated: August 14, 2026