What Is a Condo? Condominium vs. Apartment Explained

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A condominium (condo) is a residential or commercial unit that one person or entity owns outright inside a larger property, together with a shared, undivided ownership interest in the building’s common areas. The unit owner holds title to their own space. All owners collectively, through a condominium association, control and pay for everything outside the units, such as hallways, roofs, grounds and amenities. That combination of private title and shared obligations separates a condo from an apartment, which is a unit a tenant rents from a landlord.

What a Condo Owner Actually Owns

A condo owner owns two things at once. The first is the unit itself, usually described as the “air space” inside it, so the owner’s title typically does not cover the structural walls separating the unit from neighbors or the hallway. The condominium declaration defines exactly where the unit ends, whether at the interior drywall or elsewhere, and that boundary decides who pays when a pipe inside a wall bursts.

The second is a share of the common elements, held jointly with every other owner. Common elements come in two kinds:

• General common elements belong to and serve everyone: the roof, foundation, exterior walls, lobbies, elevators, stairwells, sidewalks, landscaping, pools and fitness rooms.
• Limited common elements are shared property set aside for the exclusive use of one or a few units, such as a balcony, a storage locker or an assigned parking space.

Each unit’s interest in the common elements is usually expressed as a percentage set in the declaration, often based on unit size or relative value. That percentage typically drives the owner’s share of monthly fees, assessments and voting weight.

Parking shows why these categories matter. In some developments, spaces are limited common elements that the association owns but grants to one unit for exclusive use. In others, the buyer holds title to the space, though the CC&Rs may still bar selling or renting it separately from the unit.

Condos are a legal form, not a building style

A condo is defined by how the property is owned, not by how it looks. A residential high-rise is the familiar example, but townhouses, garden-style low-rises and even detached homes can be legally structured as condominiums, and office buildings, retail centers and medical buildings can be divided into commercial condos.

How Condominium Ownership Works

The governing documents

Every condominium is created and run under a set of legal documents, recorded when the property is established:

• The declaration (master deed or CC&Rs) creates the condominium, defines the units and common elements, assigns each unit’s percentage interest, and sets the rules on use, alterations, pets, rentals and similar matters.
• The bylaws describe how the association operates: how the board is elected, how meetings and votes work, and how budgets are adopted.
• Rules and regulations adopted by the board cover day-to-day matters such as trash, noise, move-in hours and amenity use.

These documents bind every owner, including future buyers. Before purchasing, a buyer is effectively agreeing to an existing contract with all the other owners.

The association and the board

The condominium association includes all unit owners, who elect a board, usually from among themselves. The board sets the budget, collects fees, hires contractors or a professional management company, and enforces the rules. The association handles routine work such as lawn care, snow removal, cleaning and repairs to shared systems. Larger decisions, such as amending the declaration, often require an owner vote under thresholds set in the governing documents.

Fees, reserves and special assessments

Owners pay a recurring condo fee (often called HOA dues or common charges). It typically funds:

• Insurance on the building and common areas (the master policy)
• Shared utilities, such as common-area electricity and sometimes water
• Routine maintenance, landscaping and cleaning
• Management company fees, if the association hires one
• Contributions to a reserve fund for future big-ticket repairs like roofs, elevators and parking structures

Fees rise as labor, materials and insurance costs increase. When a major expense exceeds what reserves can cover, the board can levy a special assessment, which can run into thousands or tens of thousands of dollars per unit. Allocation follows the declaration, commonly by each unit’s percentage interest or size.

Insurance and taxes

The association’s master policy covers the structure and common elements. Coverage inside units varies by policy, so owners usually buy their own condo policy (often called an HO-6) for interior finishes, personal property, liability and any gaps. Property taxes are assessed on each unit and paid directly or through a mortgage escrow account.

Example of a Condo Assessment and Monthly Cost

The figures below are a hypothetical example, not typical market numbers.

A 100-unit building needs a $600,000 roof replacement. The reserve fund has $360,000 set aside for it, leaving a $240,000 shortfall that the board decides to cover with a special assessment allocated by percentage interest.

Now consider the two-bedroom owner’s regular monthly housing cost, assuming a $1,700 mortgage payment (principal and interest), a $450 condo fee, $300 in property taxes and $40 for an HO-6 policy:

$1,700 + $450 + $300 + $40 = $2,490 per month

The assessment adds $3,000 on top of that, due in one payment or in installments if the board allows. Because the roof was a known future expense, the shortfall reflects how well the reserve fund was built: a fully funded reserve could have covered it with no assessment.

Condominium vs. Apartment

The core difference is ownership. An apartment is a unit you rent, and apartment buildings are usually owned by a single landlord, such as an investor or property management company, that operates the whole building as a rental. A condo is a unit you buy. A condo building has many owners, one per unit, plus a shared association.

The terms blur because condo owners can rent their units out, and a tenant may call the unit an apartment. The tenant’s landlord is then the individual unit owner, who must follow the association’s rules, including any limits on leasing.

Condo vs. Other Ownership Structures

Single-family house. A house owner typically owns the structure and the land under it and is responsible for all maintenance. Condo owners usually own no land individually. Condos are often less expensive than single-family houses in the same area, though luxury condos in prime locations can cost far more than an average house.

Townhouse. “Townhouse” describes a building style (attached homes, usually multi-level). A townhouse may be sold as a condo or as a fee-simple property that includes its lot, often within an HOA. The deed and declaration, not the floor plan, tell you which.

Co-op. In a housing cooperative, buyers purchase shares in a corporation that owns the whole building and receive a proprietary lease to their unit. Co-op owners do not hold title to real property the way condo owners do, and co-op boards commonly approve or reject prospective buyers.

HOA community. Condo associations are a type of community association. In many planned communities with an HOA, owners hold title to their homes and lots, and the HOA owns and manages only the shared areas.

Why the Structure Matters to Buyers

A condo can be a lower-cost entry into real estate, and paying down the mortgage builds equity that counts toward net worth. But alongside your own unit, you are buying into the association’s finances, its reserve funding, its insurance and its rules. The main advantages:

• Shared amenities. Pools, gyms, tennis courts and, in some high-end buildings, spas or rooftop terraces, funded through fees.
• Security. Some associations provide gated entry, a doorman, cameras or patrols.
• Less maintenance. The association handles exterior repairs, landscaping and snow removal.

Limitations of Condo Ownership

• Fees and assessments. Condo fees are a permanent cost on top of the mortgage, they can rise, and special assessments can arrive with little warning.
• Less privacy. Shared walls, floors, ceilings and common spaces mean neighbor noise and less separation than a detached house.
• Rules and restrictions. The association can limit renovations, rentals, pets, guests’ use of amenities, exterior changes and more.
• Shared financial risk. Owners who stop paying dues, a thin reserve fund or litigation against the association can affect every owner’s costs.
• Financing hurdles. Lenders evaluate the condo project as well as the borrower, including the share of owner-occupied units and pending litigation, and FHA-insured loans require the project to meet FHA condo approval rules.

Before buying, buyers commonly request the declaration, bylaws, current budget, reserve study, recent board meeting minutes and insurance summary. Listings on a multiple listing service usually show the monthly fee, but the documents explain what that fee covers and how well funded the reserves are.

FAQs

The Bottom Line

Condo ownership suits buyers who want title to their own unit, shared amenities and less exterior upkeep, and who accept association rules and permanent fees. A buyer takes on the association's finances along with the unit, so a thin reserve fund can mean large assessments later. Reviewing the declaration, bylaws, budget, reserve study, board minutes and insurance summary before purchase shows what the fee covers and how well the reserves are funded.