1. Look and contain it
Document what's happening, prevent further damage where safely possible, and note relevant history.
2. Assess the house and lot
How it's installed, the flashing work, sill condition, frame material, glass package, trim restoration, and how much coastal sun and salt air the wall takes on matter as much as the window itself.
3. Get the scope in writing
Preparation, protection, materials, access, permits, testing, cleanup, finish restoration, exclusions, and change-order handling should all be spelled out.
4. Weigh the bids
Check credentials and compare the reasoning and boundaries behind each proposal, not just the total price.
5. Finish the job right
Confirm testing was done, cleanup is complete, documentation is handed over, warranties are clear, and ongoing maintenance is understood.