Currently there are no fire spread models evaluated for use in wildland-urban interface (WUI) fires. A number of possible model approaches can be applied to WUI fires. They can range from the relatively simple rule or empirically based to the very complex physics based. Each approach has merit, depending on the needs and resources of the user (e.g, required prediction accuracy, computer resources, amount of input information known, turn-around time requirements). In the proposed work, a number of model approaches will be developed and evaluated. The approaches will differ by the degree of physics-based modeling used to capture the fire/fuel and fire/atmosphere interactions. The user input procedure and visualization package will be the same for all models. Evaluations of the approaches will result in recommendations for the next generation WUI fire spread models, for given user needs. The models and visualization package will be publicly downloadable. Beta users from the Forest Service will provide valuable feedback and input during the project.