Blocking the block
How Many Hotel Rooms Should You Block for a Wedding?
By Jared Waterworth · Updated June 10, 2026 · 5 min read
Reserve too few rooms and guests scatter across town. Reserve too many and the attrition clause bills you for the empties. Here's the middle.
The quick answer
Estimate rooms as (out-of-town guests × ~60% uptake) ÷ 2 guests per room, then add a ~10% buffer. For 100 traveling guests that works out to about 30 rooms, so open with an initial block of roughly 33.
Skip to the numbers
Use the hotel block calculator for your wedding.
A hotel room block makes travel easy for guests and often unlocks a group rate. Block too many rooms, though, and you can owe the hotel for the empties. The goal is a block that's big enough to be convenient and small enough to be safe. Here's the math, plus how to read an attrition clause. To size yours, use the hotel block calculator.
The block-sizing math
Estimate the rooms you need like this:
- Rooms = (out-of-town guests x uptake%) / guests per room
- Default uptake: about 60% of traveling guests book within the block.
- Default occupancy: about 2 guests per room.
For the suggested initial block, add roughly a 10% buffer so early bookers don't exhaust the rooms before everyone has reserved.
Say 100 guests are traveling
- 100 guests x 60% uptake = 60 guests likely to book
- 60 guests / 2 per room = 30 rooms
- Over a two-night stay: 30 x 2 = 60 room-nights
- With a 10% buffer, suggest an initial block of about 33 rooms
Watch the attrition clause
Many contracts include an attrition clause making you responsible for a share of rooms that go unbooked, sometimes 80% or more of the block. I've never seen a couple regret a block that ran a little small; the oversized ones are what cost real money. To protect yourself:
- Start smaller (around 80% of your estimate) and add rooms as the block fills. It's far easier to expand than to pay for empty rooms.
- Ask for a courtesy block, which reserves rooms at a group rate with no minimum and no financial liability.
- Confirm the cutoff date after which unbooked rooms are released back to the hotel.
Where couples get burned
- Blocking too many rooms. The most expensive mistake: an aggressive block plus an attrition clause means paying for empties. Start at ~80% and add as it fills.
- Not reading the attrition clause. Know exactly what share you're on the hook for, or ask for a no-liability courtesy block instead.
- Counting heads instead of rooms. Couples share rooms; estimate at about 2 guests per room, not one room per guest.
- Missing the cutoff date. Rooms release back to the hotel on a set date, so remind guests a couple of weeks beforehand or they lose the rate.
- Forgetting to share the link. A block nobody can find goes unused. Put the booking link on your website and save-the-dates.
Coordinate the rest of travel
Once you know where guests are staying, plan how they'll get to the venue with the shuttle calculator, and keep the room block in your overall costs using the wedding budget calculator. A clear block and a simple shuttle plan are two of the kindest things you can do for traveling guests.
Frequently asked questions
How many hotel rooms should I block for a wedding?
Estimate rooms as (out-of-town guests x uptake%) / guests per room. A good default is 60% uptake and about 2 guests per room. Then add a small buffer (~10%) for the initial block. For 100 out-of-town guests, that is roughly 30 rooms plus buffer.
What is an attrition clause?
Many room block contracts hold you responsible for a percentage of rooms that go unbooked. To limit that risk, start with a smaller block (around 80% of your estimate) and add rooms as they fill, or ask the hotel for a courtesy block with no minimum.
How do I count room-nights?
Multiply the number of rooms by the number of nights guests will stay. Thirty rooms over a two-night stay is 60 room-nights, which is the figure hotels use when quoting rates and attrition terms.
What uptake rate should I assume?
About 60% of out-of-town guests typically book within the block; the rest stay elsewhere, with friends, or use points. Adjust up for a destination wedding where most guests must travel, and down if many locals are attending.
Should I block rooms at more than one hotel?
It's common to offer two price points (one nicer property, one budget-friendly option nearby) so guests can choose. Keep them close together, ideally sharing a shuttle route, and split your room estimate between them rather than blocking the full count at each.
When should I set up the room block?
Lock in the block before you send save-the-dates (typically 6–9 months out) so the group rate and link are ready when guests start planning travel. Set the booking cutoff for about 2–4 weeks before the wedding, and put the link on your wedding website.
Sources
Last reviewed June 2026 by Jared Waterworth. Estimates use widely accepted wedding-planning rules of thumb — see how we estimate. Numbers vary by region, season, and vendor, so verify before you book or buy.