Yes and no. Our site inspection at our initial meeting will consider site review, design review and a current structure review (renos/extensions) for the purposes of preparing a future proposal.
A likely budget or ballpark figure, made up on the spot, usually leads to misinformation and disappointment. Our solution to this is to engage a third party to prepare a feasibility forecast for a small fee. They have no interest in ‘getting you locked in on a low price and increasing later’ and are usually 95% accurate.