This paper investigates the problem of financing infrastructure over time w
hen the number of users also changes. The problem is confronted in many fas
t-growing communities that need to coordinate the timing of infrastructure
and development, yet still achieve economics of scale where they exist. The
temporal free-rider problem is defined, whereby the group that finances th
e construction at a given time is not identical with the group that uses it
, The continuous recovery method, which effectively establishes a property
rights framework, for infrastructure. is described. Continuous recovery ena
bles existing residents to be appropriately compensated by new residents, i
ndependent of the number of now residents who ultimately arrive. The system
is illustrated and compared with practice in a case that uses a noncontinu
ous cost recovery system.