
Clients reserve a March–June install window, you complete design work over winter, and their pricing is locked until a set date. You promise a window, not a specific day. Dates are confirmed 2–4 weeks prior to account for weather.
"We're booked through [date]. Two options: if your scope fits what's left, we'll try to land it this season. Otherwise we can reserve a spring window now. We design over winter and lock today's pricing. To hold your window, we collect a design retainer and a 15% reservation that is credited to your project."
This is how $5M+ contractors smooth their cash flow and avoid winter panic. You're not discounting or begging for work, you're offering priority scheduling and price protection to clients who want certainty.