Concept Drafts › Resource center › Rules, safety and professionals
Rules, safety and professionals
Permits, inspections, safe power and the people who sign off.
Your guided 4-step sequence
Looking for something specific?
Calculators for this path
Free calculator
DC wire size (voltage drop) calculator
The smallest copper wire size that keeps voltage drop under your limit on a DC run.
Free calculator
Solar panel and battery size calculator
How many panels and how much battery you need for your daily energy use.
More guides
How to write a great concept draft request2 min readFrom concept draft to a real build2 min readHow to budget a build2 min readChoosing materials for your build2 min readHow to read a concept draft2 min readHow to get real quotes from a parts list2 min readMeasure your space before you plan2 min readKeep your plan current while you build2 min read
Start with an idea. Finish with a plan.
Describe it in one sentence. Specs, drawings, parts with prices and the rules to check, in about a minute.
For planning only: have a qualified professional check any design before you build or use it.