The log store optional extra is available all shed designs.
All three of the available bike shed designs can offer one of its side walls (left or right can be specified) as a space to stack your logs.
The roof and walls are extended out by an extra 400mm which is enough to take most sizes of logs. The floor of the log store is built in treated slats to allow good air flow under the logs. The wall behind the logs is the side wall of the Classic (with the cladding type specified on the rest of the shed). The only consideration is that there needs to be a good amount of space around the side of the shed to access the logs.