In 2009, a new fire station was built of solid wood in Steinbach am Ziehberg in Upper-Austria. The distinctive feature of this building is that production and manufacturing of the wood construction parts completely happened on a local basis. The present case study deals with the ecological aspects of the construction phase of the building project by calculating the environmental indicators: ecological rucksack, carbon footprint and cumulative energy demand. In order to compare two construction alternatives, one of solid wood and the other of mineral construction material, a virtual substitution of the solid wood bearing units by mineral construction material was assumed. The comparison of the solid wood building with a building constructed of mineral materials reveals savings of construction material. With that, savings are revealed in total material requirement of the ecological rucksack by a factor of 3,55, in carbon footprint by a factor of 7,99 and in cumulative energy demand by a factor of 4,33. With the combination of the ecological aspects and the regional value added (SEEBACHER, 2012) the direct conclusion can be drawn, that the consideration of construction alternatives is of ecological relevance. The case study shows that economic benefit has to be considered separately from resource requirement. The calculation of three different ecological indicators provides a picture for each indicator in respect to communication, the application of the methods for other building projects and the mode of calculation in view of implementation by decision makers.