Partner with complimentary service providers
Depending on the cross-cultural service, you will have different partners. If your clients are expats, here are a few partners to consider. Contact other Cross-Cultural Consultants, Language Providers, Translation Services, Relocation Companies, Movers, Temporary Housing, EAP (Employee Assistant Programs), IEAP (International Employee Assistant Programs), Embassies, Consulates, Immigration Attorneys, Universities, and Real Estate Agents. For my business, relocation companies have been the most beneficial partners.
Meet with potential partners to determine their clients needs and explain the benefits of cross-cultural services. Determine how both partners can benefit from the business relationship. I attend local and national relocation events and conferences to develop relationships with partner companies. For example, the ERC Employee Relocation Council hosts an annual event in the US. Another partner for CBC has been companies who provide services (financial, taxes, payroll, HR) for businesses expanding globally. If you can recommend your partners services to others, then both parties will succeed.