Los Altos Hills leaders seek ADU input, possible housing requirement ‘carve out’ Courtesy of the Town of Los Altos Hills The town of Los Altos Hills is asking residents to take an ADU survey through Feb. 26. The town of Los Altos Hills has extended the deadline for a survey meant to, in part, gauge residents’ appetite for the construction of accessory dwelling units. The survey is available online through Friday (Feb. 26). Town leaders are encouraging the constructing of ADUs because, in a town that prides itself on requiring lots to measure at least an acre in size, they are its chief mechanism for meeting state-mandated low-income housing allocations.