This is the 7146th most frequent Polish word.
investhouseplus
"Investhouseplus" is not a standard Polish word; it appears to be a brand name or business name rather than a dictionary term.
In this sentence, 'Investhouseplus' is used as a proper noun—the name of a company providing services.
Firma Investhouseplus oferuje usługi zarządzania nieruchomościami.
The company Investhouseplus offers property management services.
Here, 'Investhouseplus' is again a proper noun directly referring to the entity being addressed by the client.
Klient poinformował Investhouseplus o potrzebie dokonania naprawy w wynajmowanym mieszkaniu.
The client informed Investhouseplus of the need for repairs in the rented apartment.
In this usage, 'Investhouseplus' designates the participant in a dialogue regarding investment opportunities.