General cleaning of buildings (SIC code 81210)
Commercial cleaning firms file here. Offices, retail premises and light industrial units are the core work. Window cleaning is 81221. Specialised industrial cleaning is 81222. Everything else is 81229.
24,221active UK companies list SIC 81210 among their codes on the public recordCompanies House · counts as of August 2026
SIC 81210 in numbers
24,221 companies is 0.47 per cent of the 5,190,464 active companies on the UK register. 81210 is the most used of the 8 codes we track in division 81.
17,442 put 81210 first and 6,779, 28 per cent, list it in one of their other three slots. First code only gives the tighter list; any position gives more of them.
ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN (WHERE THE PAPERWORK SITS, NOT NECESSARILY THE WORK) · COMPANIES HOUSE PUBLIC RECORD, AUGUST 2026
London is the largest cluster at 21 per cent and the top five post towns hold 28 per cent, so the other 72 per cent sit across the rest of the country. A regional filter narrows the list without gutting it.
A worked example: 81210, registered office in London, incorporated in the last ninety days, from a pool of 24,221. Each lead you get arrives with a working website and a real email, and the director's name when the record has one. If we cannot complete one, you pay nothing.
SIC 81210 companies, as leads
Live rows from the enriched public record. Email addresses are withheld until you sign up. Phone numbers come with paid plans.
Cleaning companies in one town or city
Choose a place and see 3 of them there, before you sign up.
Tell us who you sell to. We find them, with a real email. 100 free leads, no card.
This division is home to the cleaning and grounds trades. General building cleaning sits under 81210.
Related SIC codes
How to read SIC 81210
SIC 81210 reads as division 81 (services to buildings and landscape activities), group 812, class 8121, then the full five digits, inside section N, administrative and support service activities. A company picks its own codes, up to four, and Companies House does not check them, so 81210 is the company's own description of what it does, and 17,442 list it first where 24,221 list it anywhere.
Who sells into division 81
These are classic local service businesses, so the sellers are familiar ones. Insurance brokers offer public liability.
About SIC 81210
Are domestic cleaning agencies filed under SIC 81210?
No. Cleaning in private homes falls under 97000 (activities of households as employers). 81210 is for business premises only.
How seasonal is SIC 81210?
Barely. Commercial cleaning runs all year round. Demand lifts for a short spell in Q1, for post-Christmas deep cleans, and again in Q3 as offices fill back up.
Find UK SIC 81210 companies
Filter Companies House by this code. Each lead arrives with a working website and a real email, or you pay nothing. 100 free leads, no card.
✓ No card · ✓ 100 free leads · ✓ Nothing to cancel