No one party owns a condo building. Ownership is split: each unit owner holds individual title to their specific unit, and every owner in the building also holds an undivided percentage share of the structure itself, the common areas, and the land underneath. The condominium association manages the property, but it owns none of it. That dual structure, individual title plus collective shares, is what separates a condominium from an apartment building or a single-family home.
What You Own When You Own a Unit
Buying a condo gets you a deed granting fee simple ownership of your unit, the most complete form of property interest recognized in American law. You can sell, lease, mortgage, or leave the unit to heirs. Your ownership is legally independent from every other unit, so if a neighbor defaults on their mortgage, their lender can foreclose only on that unit.
What you actually own is narrower than most buyers expect. In most buildings, your unit is defined as the interior airspace bounded by the finished surfaces of the walls, floors, and ceilings. Paint, wallpaper, flooring, cabinetry, and fixtures on those surfaces are yours. Everything behind them, including the structural framing, load-bearing walls, pipes, and wiring that serve multiple units, belongs to the collective. Repairs inside those boundaries, from a dripping faucet to a cracked tile, are on you.
Each unit is also its own taxable parcel. The local assessor sends you a separate tax bill based on your unit’s assessed value, independent of what other owners owe. A tax lien against one unit does not touch any other unit in the building.
What All Owners Share
Everything outside your unit’s boundaries is a “common element” owned collectively by all the owners. The roof, foundation, exterior walls, hallways, elevators, stairwells, lobby, mechanical systems, and the land beneath the building fall into this category. No one holds a separate deed to any of these. Instead, each owner holds an undivided percentage interest in all of them, tied permanently to their unit.
The percentage comes from the declaration, the recorded document that creates the condominium. It is usually based on your unit’s square footage relative to the total habitable space. A 1,200-square-foot unit in a building with 120,000 total square feet would carry roughly a 1% interest. Some declarations use equal fractional shares instead, but the math is spelled out in the document either way.
The key feature of this shared ownership is that it cannot be separated from your unit. You cannot sell your share of the roof while keeping your unit, and no owner can force a partition of the common elements. When your unit sells, your percentage of the common elements transfers automatically with the deed. That inseparability is what holds the whole structure together.
Limited Common Elements
Some shared areas are reserved for the exclusive use of one unit or a small group of units. These “limited common elements” are owned by everyone but used by only a few. Balconies, patios, assigned parking spaces, storage lockers, and exterior doors or windows serving a single unit are typical examples.
The label matters for maintenance and cost. Many declarations shift repair costs for limited common elements onto the owner who uses them. If the railing on your balcony rusts, you may owe the replacement even though the balcony technically belongs to all owners. Other declarations keep that responsibility with the association. Your declaration and bylaws are the only reliable guide to which model applies in your building.
Why the Association Doesn’t Own the Building
The association is where ownership questions most often get muddled. The condominium association manages the building; it does not own it. Its role is operational. It collects assessments, hires contractors, maintains common elements, enforces rules, and manages finances. Its assets are generally limited to bank accounts, reserve funds, and maintenance equipment.
Most associations are organized as nonprofit corporations under state law, with the specific structure varying by jurisdiction. For federal tax purposes, a condominium management association can elect favorable treatment under the Internal Revenue Code as long as 60% or more of its gross income comes from assessments paid by unit owners and the organization is operated to manage and maintain the association’s property.1Office of the Law Revision Counsel. 26 USC 528 – Certain Homeowners Associations Associations making this election pay a flat 30% tax on any non-exempt income, such as interest earned on reserve accounts.
A board of directors elected from among the owners governs the association. Board members owe a fiduciary duty to act in the owners’ collective interest, not their own. Monthly assessments fund day-to-day operations and typically cover the master insurance policy, landscaping, utilities for common areas, management fees, and reserve contributions. Owners can sue in civil court if the board mismanages funds or exceeds its authority under the governing documents.
The Declaration Defines Every Ownership Share
Every condominium begins with a single recorded document, usually called the declaration of condominium, master deed, or CC&Rs (covenants, conditions, and restrictions). It is filed with the county recorder’s office and splits one piece of real estate into individually owned units and shared common elements.
The declaration must contain specific information: a legal description of the land, the boundaries of each unit, the percentage of common element ownership assigned to each unit, the allocation of voting rights, and any restrictions on use or transfer. It also designates limited common elements and allocates their maintenance costs.
Think of the declaration as the constitution of the building. Bylaws, house rules, and board resolutions all derive their authority from it. When disputes arise over who is responsible for a repair or whether a particular use is permitted, courts look to the declaration first. Prospective buyers should read it before signing, not after, because it defines what ownership actually means in that specific building.
What Ownership Costs: Assessments and Reserves
Owning a share of the building’s common elements means paying for their upkeep. Monthly or quarterly assessments fund the operating budget: cleaning, landscaping, insurance premiums, utilities for shared spaces. Each owner’s share is proportional to their percentage interest in the common elements, as set in the declaration.
A portion of each assessment should flow into a reserve fund for major future expenses like roof replacement, elevator overhaul, or repaving. Fannie Mae requires that at least 10% of an association’s annual budget go toward replacement reserves for the association to qualify for conventional mortgage financing.2Fannie Mae. Full Review Process An independent reserve study, typically updated every few years, projects when major components will fail and how much the association should be saving each year.
When reserves run short, the board can levy a special assessment, a one-time charge for a specific expense. Elevator modernization, façade repairs, and emergency roof replacement are common triggers. Special assessments can run into tens of thousands of dollars per unit, and owners generally have no ability to opt out.
Insurance Follows the Ownership Line
Insurance splits along the same line as ownership. The association carries a master policy covering the building’s structure and common areas, including liability for injuries in shared spaces. Individual owners need their own policy, typically called HO-6 coverage, for everything inside their unit boundaries and for personal liability.
How far the master policy reaches into your unit depends on which model the association uses:
- Bare walls-in. The association covers the structure up to and including the drywall. You insure all interior finishes, fixtures, flooring, cabinetry, appliances, and plumbing or electrical fixtures.
- Single entity. The association covers the structure plus original fixtures and appliances as built, but not any upgrades or renovations.
- All-in. The association covers the structure, original fixtures, and owner improvements. This is the broadest coverage and the least common.
The coverage model determines how much HO-6 insurance you actually need. Under bare walls-in, you are insuring everything from the drywall inward. Under all-in, your individual coverage needs are much smaller. The declaration or bylaws will say which model applies. A share of your monthly assessment goes toward the master premium, but that coverage does not protect your personal belongings, your interior improvements under most models, or your personal liability if someone is hurt in your unit.
What Happens When One Owner Defaults
When an owner stops paying assessments, the association can file a lien against that owner’s unit. The lien attaches only to the delinquent unit, not to any other property in the building. In many states, a portion of this lien, often equal to six months of unpaid assessments, carries “super-lien” priority, meaning it takes precedence even over a first mortgage. That status gives associations real leverage to collect.
Mortgage foreclosure works the same way. If an owner defaults on their loan, the lender forecloses only on that specific unit. The foreclosure does not touch any other unit or the common elements. The new owner after foreclosure, whether a bank or a third-party buyer at auction, becomes responsible for assessments going forward and may also inherit some portion of the previous owner’s unpaid balance. The financial isolation of each unit is one of the most important protections built into condominium ownership.
Verifying Who Owns What in a Specific Building
Confirming ownership in a condominium starts at the county recorder of deeds or clerk’s office where the property sits. The declaration of condominium is the first document to pull. It sets out the legal descriptions of every unit, the percentage of common element ownership assigned to each, and the rules governing the building. Individual unit deeds, recorded separately, identify the current owner of each unit and any mortgages or liens against it.
During a sale, an estoppel certificate from the association gives a snapshot of the seller’s financial standing. It confirms whether the seller owes any unpaid assessments, fines, or special assessments, and discloses pending charges. Buyers should insist on one before closing. In many jurisdictions a purchaser can be held jointly liable for the previous owner’s unpaid association debts, and the estoppel certificate is the only reliable way to quantify that exposure before the deed changes hands.