This is a fundamental question. A good place to start is with a survey of your property. Most municipalities have a maximum percentage of your lot that you can build on and standard setbacks from your property lines that you will need to adhere to without needing to request special permission to build. On a photocopy of your survey you can draw in what your local setbacks are in order to define the location within which you will be permitted to build. In a best-case scenario, you will have the space to build without compromising too much on space or location; otherwise, you may need to request a minor variance, which would allow you to circumvent an obsta­cle such as a setback.

Cutting sandpaper is a quick way to dull your scissors or utility knife blade. Instead, I fastened a hacksaw blade to the edge of my workbench. I slipped a washer behind the blade at each of the mounting holes so a sheet of sandpaper to easily slides in behind the blade. I fold the paper where I want to cut, just as a reference. — Kim Boley. Try some of these storage solutions!

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Is your cellar damp? If so, you may have to correct that problem before installing your tools and lumber supplies. Insulate pipes to prevent condensation. Make sure your gutters outside keep rainwater running away from the house. Cracks in the cement floor or walls should be filled with hydraulic cement; a high water table may necessitate a sump pump to collect water at a low point and pump it out. Any or all of these circumstances may also require a dehumidifier. In any case, dampness is unacceptable where power tools are to be used because of the risk of electric shock.
Through my cabinet-shop connections, I managed a snappy deal ($200) on a used cabinet saw with a 54-in. commercial rip fence. That price would be hard to match, but it is possible to find a hybrid or used cabinet saw with a high-quality fence for $600 to $1,200. Some of them will run on 120v household current, meaning you won’t have to rewire your shop for 240v service, but be sure to check for compatibility before you buy.
My advice here is to make a detailed list of what the various parts of the build will be (drawings, permits, foun­dation, framing, electrical, etc.) and decide what you would like to do yourself and what you will need to hire others to do. Get quotes on the work that you would like to hire out and estimate the materials you will need to do your por­tion. You may want to factor in your time into the cost as well, especially if you will be passing up other income to work on the project. At some lumberyards, you will be able to give detailed drawings to an estimator on staff who will do a material takeoff list for you of what you’ll need and what it will cost. When all the numbers come in, you can put together a budget and plan for an overrun allowance of around 15 percent. If you keep track of the materials and subcontract costs as you go, you can stay on track and make decisions as you go about the latter stages of the project without regretting it later. If it is challenging to obtain fund­ing for a complete build, you may want to stage the build so that initially the frame goes up and the exterior is finished, and then you finish the interior work as you have time or as funds become available.
Let’s be clear about one thing: No workshop is perfect for everyone. If there were, I could simply give you a precise plan to follow with clear dimensions. Every person who comes to the hobby, avocation, or profession of woodworking has his own particular collection of tools and his own peculiar work style, skills, and desires for the kind of woodworking he wants to do that gives him a unique approach as to how he will lay out a shop: where the tools should go, where lumber and supplies are stored, and how much bench area he needs.