Generally, a safety management system deals with the on-site construction however, the display homes and sales offices are workplaces and need to be considered carefully as these places are sometimes remote and very few other persons around at closing times.

Your sales staff also have a higher proportion of females who are working many times on their own.

Your sales team should be treated just as fairly as any other worker at a workplace and  these safety procedures are a good start to provide some direction and process for these situations.