Travel plans are packages of measures tailored to meet the needs of individual sites, which aim to promote greener, cleaner travel choices and reduce reliance on the car. Travel plans deliver transport improvements in a cheap, quick, acceptable and effective way, but to work properly they require institutions such as employers and schools to participate, which they are often unwilling to do voluntarily. Consequently, in the UK travel plans are now often legally required by local authorities through the planning process. This means land developers are major travel plan stakeholders, yet little is known of their views. The aim of this paper is to help redress this by reporting the results of 10 exploratory interviews with informed developers on the topic. The paper highlights that developers are generally positive about travel plans, but have concerns relating to financial penalties and associated future costs.Recommendations are made for practice and policy.