A renovation budget is more than a list of builder prices. Purchase cost, professional fees, contingency, finance and the finished property value all affect whether a vacant-property project makes sense.
For an early feasibility check, use ranges and replace them with written quotations once the property has been inspected.
Instead of asking only “what will renovation cost?”, ask “what will the complete project cost and what does the finished property need to be worth for the numbers to work?”