Wedding & Event Venues, Instant Availability & Package Quote Booking Tool
Couples check a date's availability and get a real package quote instantly instead of waiting days on email and phone tag, and can put down a deposit on the spot to hold the date before a faster-responding competitor gets the booking instead.
This blueprint is free. Copy the master prompt below, build it with your own time, and the only outlay is a few low-cost tool subscriptions. Use it inside your own business, or sell it to clients. The numbers further down are what you can charge, not what you pay.

The Venue That Lost A Wedding Because They Answered On Thursday
Read the articleWho you sell it to
Independent wedding and event venues currently running availability checks and quoting entirely through phone calls and email, losing bookings to whichever competing venue happens to respond to a couple's inquiry first.
If you sell it, here is the money picture:
The first tile is the value of your client's own jobs, which is the reason they will pay you. The other two tiles are what you charge them.
How it works
A couple selects a date and event type, and the app checks live availability instantly, returning a real package quote built from the venue's own tiered pricing rather than a generic number. An unavailable date routes to the nearest open dates instead of a dead end. A couple can put down a deposit immediately to lock the date, which prevents a double-booking the moment payment clears.
Inquiries for popular dates or arriving after hours get flagged for a fast personal follow-up, since the relationship still closes the booking, the instant quote just keeps the couple engaged long enough for that follow-up to happen.
What to expect
The availability-and-quote logic needs to be bulletproof against double-booking, since a venue's entire trust with a couple collapses if two parties both believe they've secured the same date. Test the concurrent-inquiry edge case specifically, two people checking and paying a deposit on the same date within minutes of each other, before treating the build as done. Expect the win-back list of non-converted inquiries to become one of the more useful parts of the tool once real data accumulates, a personal follow-up call to someone who got a quote but never booked converts at a real rate and is easy to forget without a system surfacing it.
The seasonal and day-of-week pricing logic often needs a round of real-world calibration once the venue sees their actual pricing tiers reflected back at them, budget time in the pilot for that adjustment rather than assuming the first pass is final. Once the base build works, common follow-up requests include a virtual tour or photo gallery embedded in the quote screen, a guest-count-based catering add-on calculator, and integration with whatever accounting software the venue already uses for tracking event revenue.
Master prompt
You are an expert full-stack builder. Build a production-ready tool that… (the complete master prompt, custom input fields, build phases, pricing guidance and sales script are part of this blueprint.)
Build phases
Required tools
Stripe
Twilio
Urgent inquiry alerts to staff and payment reminders to couples
~$0.0079/SMS in the US, phone number ~$1.15/month
Sign upSupabase
Availability calendar, inquiry, and booking data storage
Free tier available, ~$25/month for production use
Sign upAppBuild.DIY (Vibes)
Wraps the finished build into native iOS/Android apps and a PWA with push notifications for urgent inquiry and payment alerts
Free to start, paid tiers from $49/month
Sign up