Investment is needed: but by who?  Housing is required, however, a crucial component within the debate is who needs to provide funding and be involved in decision making; does it need to be the government? The consequences of investment are influenced by the actors involved. With the need for quality control adamant, greater recognition of who is investing, and for what purpose, is needed. Allowing everything to be done by private firms will often mean evictions and houses just being made so as to increase rent or to sell to those who are not long term residents.  Otiso (2003) provides a case of slum upgrading in Mathare 4, which showcases the need for a tri-sector partnership - involving public, private, and voluntary actors, for upgrading to meet need and resolve shortages in housing. The question might go further; can the community fund upgrading itself, if so is it the best allocation of funding and how is payment to be kept equitable?