@Anish Patel
I can only speak for myself, of which I’m sure many are very thankful, but here goes…
My SOW on a property that size would probably span 12-20 pages. I’m including everything, because if it isn’t on the SOW, it’s not included, period.
If I’m meeting with someone and they want a “bid”, the first thing I’m going to ask for are drawings, their SOW, and their materials schedule. Which often induces the “deer in the headlights” expression.
If you can’t hand me those your not ready for a bid of any type. You still have design work to do. I charge for that, because I will easily put 15 hours or more into developing those three ítems.
The way you are doing it you’re going to get a contractors interpretation of what you want. You are doing yourself a disservice as well because you aren’t offering an apples to apples to the contractors. They are left to fill in the gaps. Not trying to beat you up, it’s the “you don’t know what you don’t know” conundrum.