Flatshare & renting glossary

Most-searched renting terms

What does PCM mean in renting?

PCM stands for per calendar month - the rent figure quoted on almost every London room ad. What to check: whether the quoted PCM includes bills, because a £950 PCM room with bills excluded is not the same as a £1,050 PCM all-in room.

Read the full PCM definition

What does PW mean in renting?

PW stands for per week, usually shown alongside PCM so you can compare weekly and monthly costs. What to check: multiply the PW figure by 52 and divide by 12 to get the true monthly cost - weekly quotes often look cheaper than they are.

Read the full PW definition

Also searched: Section 21 notice, Gas safety certificate, Renters' Rights Act, Right to rent check, and Section 8 notice.

Renting a room can feel like learning a new language - from PCM and holding deposits to periodic tenancies and right to rent. Short explanations of the terms you'll see most often when flatsharing in the UK (including post-Renters' Rights Act updates), plus links to full guides where we've gone deeper.

Money & deposits

Tenancy types & legal status

Notices & ending a tenancy

Checks & references

Documents & certificates

Property & listing terms

Full guides

These topics have in-depth guides - open the article instead of a short glossary page.