Organiser's notes
This page favours houses with a ground-floor bedroom where the agency lists one, and the bigger farmhouses, manors and country houses that tend to have a proper dining room. Houses whose listing bans parties are excluded; a 60th with speeches is a party by most agencies’ definition.
Ground-floor bedroom and bathroom. The single most important thing if an older parent is coming. “Ground-floor bedroom” in the chips means the agency listed one; check it has a bathroom on the same level, and whether the bath has a shower over it or a walk-in.
A table that seats everyone. Sixteen people in a kitchen built for eight is a long weekend. Look at the photos for a dining room with one long table, or two rooms that open into each other.
Parking. Three generations arrive in six cars. The agency page usually gives a number; the property page here notes it where the feed does.
Noise and neighbours. A 60th is rarely loud, but a house with no immediate neighbours saves you from worrying about it. The quiet-hours rule still applies even when celebrations are welcome.
Catering. For a big family dinner, a caterer who comes to the house is often cheaper than a restaurant for 18 and far easier with small children. Ask the agency whether outside caterers are allowed; most are fine with it.
Dogs. Someone will want to bring the dog. Filter for dog friendly on the region page, and check the number allowed; “one well-behaved dog” is common.
Minimum stay and changeover. Many of the larger country houses only let Friday to Friday in summer. Outside school holidays, short breaks are more widely available and a lot cheaper.
Deposit. Expect a few hundred pounds held as security. Decide who pays it and who collects the money from everyone else; that person should also be the lead name on the booking.
Sorted biggest first, then cheapest. Dates and the full price are on the agency page.