In OpenSolar you can use Manual 3D Design when there are not 3D data available.
By leveraging on Manual 3D you can still get the same accuracy and precision as the automatic 3D and Shade Analysis.
This video will help you build Advanced Multi-Layer Houses when the address you are using does not have any 3D Data available.
You will learn how to build very advance designs: building different roof types, creating different types of dormers and adding chimneys.
Watch this video below to learn more: