From Longman Dictionary of Contemporary Englishin housein houseBECif you work in house, you work at the offices of a company or organization, not at home → in-house → housein-houseˌin-ˈhouse adjective, adverb BBCIN/INSIDEworking within a company or organization We have an in-house training unit. The keyboarding is done in-house.
Examples from the Corpus
in-house• All of our product design is done in-house.• All our artwork is done by in-house designers; we don't normally use freelance people.• Many companies run in-house management courses for their staff.• an in-house training programFrom Longman Business Dictionaryin-housein-ˈhouse adverbHUMAN RESOURCES if a job is done in-house, it is done within an organization, especially by the organization’s own staffMost of its advertising continues to be handled in-house.Government agencies discover they can pay less by contracting out jobs instead of doing them in-house. —in-house adjectiveMany businesses are introducing in-house training.the top in-house lawyer of General Electric Co 