When the POs built our house, they created an 18'x24' slab for the purpose of building a detached garage. We've been here almost 12 years and haven't been able to afford to doing anything with it. Now our financial situation has improved enough that it might be possible. However, I'd like something bigger than 18x24. Is it possible to expand the existing slab, or would we need to start from scratch? I'm just talking about the concrete / structural aspect. Logistically, I'm not sure which way to expand it. It's currently 11' from the property line on one side and I haven't checked the local codes to see how close it can be. Expanding the other side may involve relocating some underground lines. Expanding the back will involve relocating some fencing. I may just have to **** it up and build on what I've got... assuming I ever get around to it. 

