The situation
Illustrative example. Not a real job or customer.
A one-bedroom condo in an older mid-rise building near central Denver is being prepared for sale. The owner has never smoked, but the listing agent smells cigarette smoke in the bathroom, the kitchen sink cabinet and near the entry door. A neighbor on the same floor smokes indoors, and the building allows it.
- The agent and owner map where the odor is strongest: under the bathroom sink, around the shared-wall outlets, and at the entry door gap.
- The owner emails the HOA manager asking about smoking rules, who maintains the bathroom exhaust shaft, and whether other owners have complained.
- The HOA confirms the exhaust shaft is common property and schedules a check of the shaft and fan.
- Inside the unit, gaps around plumbing and outlets on shared walls are sealed, gaskets go behind outlet covers, and a new door sweep and weatherstripping go on the entry door.
- Because some residue has built up over the years, walls near the shared side and the bathroom are cleaned, and the HVAC filter or fan coil filter is replaced.
- The agent rechecks over several days, at different times, since the neighbor's habits vary.
Odor drops to a faint trace at the entry on some evenings. The owner and agent decide how to address it in disclosure, and keep the HOA correspondence as part of the record. The unit lists with far less noticeable odor than before.
Questions the seller asked the HOA
- Are there rules about smoking inside units or on balconies?
- Who is responsible for exhaust shafts, hallway ventilation and penetrations between units?
- Have other owners on this floor reported smoke odor?
- Is the association considering any policy change, and when would it be decided?
- Can the association notify the neighbor about the issue without naming the seller?
In the seller's control versus not
| Seller can do | Needs the HOA or neighbor |
|---|---|
| Seal penetrations and outlets on shared walls | Shared exhaust shafts and fans |
| Improve the entry door seal | Hallway ventilation and pressure |
| Clean residue already absorbed in the unit | Smoking rules for the building |
| Schedule showings at times the odor is lowest | Changes to a neighbor's habits |
| Keep records of steps taken | Repairs to common walls or floors |
Common questions
- Would an air purifier in the unit help during showings?
- A good portable purifier can reduce light odor in the air, but it does not stop transfer through gaps or remove residue already on surfaces. Treat it as a supplement to sealing and cleaning, not a replacement.
General information for the Denver area, not a quote or professional advice. In an emergency, call 911.