What Is Common Areas?
Common areas include lobbies, hallways, stairwells, laundry rooms, parking lots, and shared outdoor spaces. They’re maintained through operating expenses and can be a source of ancillary income (e.g., laundry income, parking income). In two-to-four-units, common areas are minimal—maybe a shared entry or driveway. In larger apartment buildings, they drive cleaning, lighting, landscaping, and capital improvements costs. Good property management keeps common areas clean and safe to support rents and retention.
Common areas are shared spaces in a multifamily property—hallways, lobbies, laundry rooms, parking lots, and outdoor spaces—that all tenants use and that the owner maintains as part of operating expenses.
At a Glance
- What it is: Shared spaces used by all tenants—hallways, lobbies, laundry, parking, outdoor areas
- Why it matters: Affects operating costs, tenant satisfaction, and potential ancillary income
- Key detail: Larger buildings have more common area; costs scale with square footage and amenity level
- Related: Operating expenses, property management, capital improvements
- Watch for: Deferred maintenance in common areas signals broader operating expenses issues
How It Works
Cost drivers. Common areas require lighting, cleaning, repairs, and sometimes landscaping. In a garden apartment or walk-up, you might have a shared entry, stairwell, and laundry room. In a larger building, add lobbies, elevators, fitness centers, and pools. Each adds to operating expenses and NOI impact.
Income potential. Some common areas generate revenue. Laundry rooms can produce laundry income via coin or card-operated machines. Parking can generate parking income. Storage lockers, bike rooms, and rooftop decks can be monetized. These ancillary income streams offset a portion of common area costs.
Value and retention. Well-maintained common areas support higher rents and lower turnover. Tenants judge a property by first impressions—lobby, hallways, grounds. Deferred maintenance in common areas often correlates with deferred maintenance in units and can signal operating expenses that are understated in pro formas.
Real-World Example
Oak Street Fourplex, Denver. The building had a shared front entry, a small lobby, and a basement laundry room with 2 washers and 2 dryers. The owner spent $2,400/year on common area cleaning, lighting, and minor repairs. He installed card-operated laundry equipment and netted $1,800/year after the vendor split—reducing net common area cost to $600. When he sold, the buyer’s multifamily due diligence flagged worn lobby flooring. The seller had deferred that capital improvement; the buyer negotiated a $4,200 credit for replacement.
Pros & Cons
- Can generate ancillary income (laundry, parking, storage)
- Well-maintained common areas support rents and retention
- Minimal in 2–4 units; manageable with good systems
- Adds to operating expenses; scales with building size
- Liability exposure (slips, falls, security) requires insurance and maintenance
- Deferred maintenance can become costly capital improvements
Watch Out
- Expense understatement: Sellers often lowball common area costs; verify with actuals and reserves.
- Liability risk: Poor lighting, icy walkways, or broken stairs create liability; multifamily insurance and maintenance matter.
- Amenity creep: Adding amenities (gym, pool) increases costs and may not pay back in rent premium.
Ask an Investor
The Takeaway
Common areas are a cost center that can be partially offset by ancillary income. In small multifamily, they’re minimal; in larger buildings, they’re a material part of operating expenses. Maintain them well—they affect tenant satisfaction, rents, and the accuracy of your NOI assumptions.