How to Winterize Vacant Apartments and Common Areas: A Checklist for Onsite Teams

Why Winterizing Vacant Units and Common Areas Matters

Winter emergencies usually start in spaces nobody is watching. A burst pipe in a vacant unit floods the occupied apartment below. A failed heating system in a corridor lets supply lines freeze inside the wall. According to Triple-I, the average homeowners claim for water damage and freezing from 2019 to 2023 was $15,400, and the cost grows when no one is inside to catch the problem early.

Winterizing also protects turn times, renewals, and your utility budget. Use this guide as a checklist, hand it to your maintenance lead, and turn it into a seasonal SOP.

Assess Your Property's Winter Risk Zones

Before temperatures drop below 32°F, walk the property with maintenance for 30 to 45 minutes and map your risk zones:

• High-priority units: corner apartments, top-floor stacks, units above unheated garages or crawl spaces, north-facing buildings, and every vacant unit.
• Common areas: laundry rooms, fitness centers, stairwells with exposed pipes, boiler rooms, and lobbies with large windows.
• Garages: keep doors closed on unheated parking structures connected to residential plumbing.

Pull past work orders and insurance claims to see where pipes have frozen before. Mark those spots on a property map, snap quick photos, and share them with leasing staff so they know which units need extra checks. Small repairs you have been putting off, like worn weather stripping or an uninsulated pipe run, tend to fail first in a freeze. Our guide to deferred maintenance costs shows how those delays add up.

Prevent Frozen Pipes in Vacant Apartments

No one is inside a vacant unit to notice a pressure drop or a stopped drip. That makes frozen pipe prevention your top winter task for empty apartments.

• Thermostat: set vacant units to at least 55°F and never turn the heat fully off. Verify settings after every move-out walkthrough and weekly after that. Use 60°F for end units and units above garages.
• Cabinet doors: open kitchen and bathroom cabinets on exterior walls so warm air reaches the pipes. When forecast lows approach 20°F, open every cabinet in at-risk stacks.
• Pipe insulation: add foam sleeves to exposed pipes under sinks, near exterior walls, and in mechanical closets. It is a low-cost task maintenance can finish between turns, and it also reduces heat loss from hot water lines.
• Dripping faucets: during severe cold, let one faucet drip slightly in at-risk vacant units, ideally the one on the most vulnerable line. Moving water is harder to freeze. Coordinate with maintenance to avoid waste.
• Warning signs on tours: no water or very low flow, odd noises behind walls, or damp spots on ceilings near plumbing runs. Escalate immediately.

How to Thaw Frozen Pipes Safely

If a pipe in a vacant unit or common area has frozen but not burst:

• Keep the faucet open to relieve pressure.
• Apply heat gently with a hair dryer, an electric heating pad wrapped in a towel, or towels soaked in hot water. Work slowly along the pipe until full flow returns.
• A space heater placed nearby can help, but never leave it unattended.

Never use open flames, propane heaters, or charcoal stoves to thaw pipes. If a pipe bursts, shut off the water supply immediately, call a licensed plumber, and photograph the damage for insurance. Check every faucet on that line and inspect adjacent units for additional frozen pipes.

Seal Drafts in Vacant Units and Common Areas

Cold air leaking through window frames, door frames, and exterior walls makes your heating system work harder. Air sealing pays off at scale. A DOE-sponsored case study of a 244-unit multifamily complex in Durham, NC found air sealing cost about $0.31 per square foot, and modeling estimated space conditioning savings of 15% to 21%.

• Window insulation kits: insulation film creates an air pocket over the glass. Most kits need only scissors, double-sided tape, and a hair dryer. In storage rooms, bubble wrap pressed against single-pane glass adds a layer.
• Weather stripping: apply it to unit entry doors and exterior common-area doors. Choose removable options that will not damage surfaces or interfere with fire code clearances. Heavier film works for lobby windows.
• Draft stoppers: block cold air at the base of exterior doors in unused offices, storage rooms, and empty models. A quick test: look for light under the door. Use them on interior doors between heated and unheated zones too.
• Outlet insulators: foam covers on exterior-wall outlets stop an often overlooked leak and take seconds to install.

Optimize the Heating System for Shared Spaces

You are not the HVAC technician, but you own making sure heat reaches every vulnerable space.

• Fall checklist: schedule professional service before the first freeze and replace HVAC filters for proper airflow. Keep boiler rooms clear of stored boxes and flammable materials, following local code for clearances.
• Cold-spot checks: walk hallways and laundry rooms on a cold morning. Blocked vents, failing radiators, and dead baseboard heaters need detailed work orders.
• Ceiling fans: run them clockwise on low speed in winter to push warm air down. This helps in clubhouses and fitness centers with high ceilings.
• Space heater rules: in leasing offices or guard stations, use only heaters with tip-over protection, plugged directly into a wall outlet, never an extension cord. Keep them away from paper and curtains, and turn them off when the area is empty.
• Balance cost and risk: lowering office thermostats at night can cut heating costs, but never let stairwells or corridors with water pipes fall below 55°F.

Plan for Power Outages

Winter storms can drop building temperatures fast. Plan ahead:

• Emergency kit: flashlights, extra batteries, battery-powered lanterns, a first aid kit, portable phone chargers, bottled water, caution tape, wet-floor signs, and printed emergency contacts kept in the leasing office.
• Systems check: work with maintenance to confirm boiler backup power and emergency lighting, and learn how long your buildings hold heat in an extended outage.
• During an outage: check known cold-risk vacant units and mechanical rooms first. Tell residents to gather in one room, layer up, keep doors closed to unheated hallways, and avoid unsafe heat sources. Send building-wide updates often.

Make Vacant and Model Units Feel Warm on Tours

Prospects notice a drafty apartment, and cold units slow leasing velocity.

• Set model unit thermostats to around 68°F during business hours.
• Use thermal curtains to help hold heat and add visual warmth. Add area rugs on hard-surface floors and soft lighting so the space feels cozy, not clinical.
• When a unit leaves the tour path, return the thermostat to 55°F to 60°F and confirm windows are locked and insulation kits are intact.
• Leasing micro-checklist before each tour day: confirm heat is on, feel for drafts at doors and windows, check for condensation, and note unusual odors or moisture.

Build a Simple Winter SOP for Your Onsite Team

Turn this guide into a one-page checklist with three sections: pre-season tasks (done by November 1), weekly inspections, and hard-freeze response (24 to 48 hours before forecast lows near 20°F).

Assign clear owners:

• Leasing: confirm thermostats and cabinet doors in vacant units after showings.
• Maintenance: inspect mechanical spaces, protect pipes, and add insulation.
• Management: monitor resident communication and coordinate vendors.

Walk new team members through spotting drafts, recognizing frozen pipe warning signs, and knowing when to escalate: suspected frozen pipes, recurring leaks, or repeated outages affecting heat. Revisit these in weekly meetings.

Document every prep step with photos, logs, and dates. It protects you in vendor disputes and insurance reviews after severe weather. Confirm heating and habitability requirements for occupied units with your legal or compliance team, since they vary by state and city.