A tourist beach resort is being built near Lasiana Beach, approximately 5 km east of Kupang in Timor, Indonesia. The resort will offer comprehensive services and facilities to international standards, with the first stage featuring detached bungalow accommodation units and a non recreational feature lake. This mosquito investigation has been commissioned by the developers as part of the environmental impact considerations. The aim of this investigation is to determine the presence of pre-existing mosquito problems in the development area, the nature of the problems, and how any problems can be reduced for both the development and surrounding residents.