Questions to put to the HOA or property manager
Ask in writing so there is a record, and keep the replies for your agent.
- Does the association have rules about smoking inside units, and how are they enforced?
- Who maintains the hallway ventilation, trash rooms and shared exhaust shafts?
- Are there known odor complaints from other units on this floor or stack?
- Can the association check or service a shared exhaust or makeup air system before showings?
- Who is responsible for sealing penetrations between units: the owner or the association?
- Are there rules for treatments inside a unit, such as notice to neighbors or restricted hours?
Common paths odor takes into a unit
| Path | How to recognize it | Who usually addresses it |
|---|---|---|
| Gaps at plumbing and electrical penetrations | Odor strongest under sinks, near outlets on shared walls | Owner, sometimes with association approval |
| Hallway air under the entry door | Smell strongest at the door; matches the corridor | Association for corridor air; owner for door sweep |
| Shared bathroom or kitchen exhaust shafts | Neighbor's odors appear when their fans run | Usually the association |
| Outlets and recessed lights in shared ceilings | Smoke smell from above | Owner seals the unit side; association for larger issues |
| Balconies and open windows | Smoke drifting in from an adjacent balcony | Association rules; difficult to fix physically |
What a seller can and cannot change
Denver's condo stock spans everything from converted older buildings and mid-century towers in neighborhoods like Capitol Hill to newer mid-rise buildings downtown and in the suburbs. Older buildings in particular often have more gaps between units and older ventilation systems. A seller cannot rebuild the building, but can do a surprising amount inside the unit's own envelope.
Sealing gaps at pipes, wiring and outlets on shared walls with appropriate sealants and gaskets cuts transfer noticeably. A new door sweep and weatherstripping at the entry slows corridor air. Cleaning residue that has already built up in the unit, from a neighbor's smoke or from the unit's own history, matters too: a unit that absorbed smoke for years will keep smelling after the transfer stops.
What a seller cannot do alone is change a neighbor's habits or a shared system. That is where the association comes in, and where the timing of the listing matters. Raising it early gives the association time to act before showings.
General information for the Denver area, not a quote or professional advice. In an emergency, call 911.