Short answer: after approval you must keep meeting stay, investment-holding, renewal and visit rules, or renewal and status can be at risk. Citizenship (e.g. CBI) usually has no stay requirement, but passports must be renewed and visa-free access can change.
By status type
| Type | Maintenance focus |
|---|---|
| Time-limited residence (e.g. Greece, Portugal) | Renew on time; meet stay days; keep the investment compliant |
| Permanent residence (e.g. Malta, Cyprus, Panama) | Visit or reside as required; some conditions on property or other terms |
| US green card | US as main home; long absences may need a re-entry permit |
| CBI citizenship | Usually no stay requirement; renew the passport; watch visa-free changes |
Practical tips
- Calendar renewal and visit dates with enough lead time.
- Before selling property or exiting a fund, confirm the effect on status.
- Green card holders should avoid absences that look like abandonment.
- Policies change — check official updates periodically.
Keeping status matters as much as the original due diligence — set a checklist at approval.