Unfortunately, many greenhouses get squeezed into odd corners of the garden with little thought given to the placement and logistics. Before deciding where to place your greenhouse, carefully assess your property for a suitable site, looking for some important features.
You will need as much light as possible, so site the greenhouse away from buildings and trees or bushes. Apart from shading your greenhouse, leaves will get into the gutters and sticky honeydew dropping from insects in a tree above your house will foul the glass causing dirt and grime to stick causing more problems.
Whilst you want to be some distance from trees, hedges, fences etc, can also be useful if they are between the house and the prevailing winds. Reducing wind will help keep the temperature up in the key times of spring and autumn and avoid the risk of your greenhouse being damaged in a storm.
You should also avoid building at the base of a slope as these are often frost pockets where cold air collects in a layer. This will cause your greenhouse to be colder, defeating the object. Level ground is best, avoiding water running into the house and making construction easier. You should also ensure that the land is well drained because this will enable you to cultivate the border soil at any time of year without it being too sticky.