UK SIC 2007 · 68100
Buying and selling of own real estate (SIC code 68100)
Property holding companies live here. Most are buy-to-let SPVs, property investment ltds and small portfolios. Letting on a fee basis is 68209. Building new schemes is 41100.
Division 68: Real estate activities
Real estate is one of the busiest corners of the register, and most of it is not estate agency. The dominant code is 68209, letting and operating of own or leased property. Next comes 68100, buying and selling own real estate. Between them they hold the huge population of buy-to-let vehicles and property SPVs. Many were incorporated to hold one building. Fee-based managing agents sit under 68320. High street and online agencies use 68310. Housing association landlords use 68201.
Who prospects SIC 68100 companies
So many entries are single-property vehicles that segmentation matters more here than almost anywhere else. Mortgage brokers, bridging lenders, insurance intermediaries, accountants and block management software firms all work the landlord codes. They watch for new incorporations, which often mean a purchase is under way. Agencies under 68310 buy different things: portals, proptech, photography and compliance services. A filing deadline hints that the company may switch accountant. Growth at a company under 68320 usually means it has won new management instructions.
Lead generation for insurance & financial brokers →How to read SIC 68100
SIC 68100 is a five-digit code, and the digits are not arbitrary. The first two, 68, are the division, real estate activities. Add the third and you have group 681; the fourth narrows it to a class, and the fifth to the subclass, which is the level Companies House actually asks a company to pick. The whole division sits under section L, real estate activities, the broadest tier there is. Reading a code left to right therefore goes from a whole sector down to one activity.
A company chooses its own codes when it incorporates and can change them on any confirmation statement. It may list up to four, and Companies House does not check whether they are right. That is why 68100 is worth reading as a claim the company made about itself rather than as a verified fact, and why the first-position and any-position counts above differ.
Measured on the August 2026 register, the busiest registered-office post towns for 68100 are London (61,473), Manchester (6,551), Birmingham (6,502), Glasgow (3,488), Leeds (3,150). Those are registered-office locations, which is where the paperwork sits rather than necessarily where the work happens, so treat them as where to start looking rather than as a service area.
Using SIC 68100 as a filter
275,961 companies is 5.3 per cent of the 5,190,464 active companies on the UK register, and ranks 68100 second most used of the 6 codes we track in division 68. That is the pool before any filter. Whether it is a big market for you depends on what you sell, but it is the number every other filter on this page cuts down from.
Almost everybody who uses 68100 means it: 247,689 of 275,961 companies put it first, leaving only 28,272 carrying it as a secondary code. That makes it an unusually clean filter. You can match on the code alone and trust that the companies you get really are in this line of work.
These companies are spread out. London is the largest single cluster at 22 per cent and the top five post towns together hold only 29 per cent, so the remaining 71 per cent sits across the rest of the country. A regional filter narrows this list without gutting it, which makes it a reasonable code to work territory by territory.
In practice the code on its own is rarely the whole filter. Pair 68100 with an incorporation date to catch companies in their first months, when they are still choosing suppliers, or with a filing deadline to reach them while the year end is on their mind. A worked example for this code: 68100, registered office in London, incorporated in the last ninety days, which turns a 275,961 company pool into a list you can write to in an afternoon. Add the poor-website filter if what you sell is a website, or a recent change of officer if you sell to whoever just took the job. Every company you pull carries the Companies House record, the director's name, a verified website and a verified email, and the ones we cannot complete are not charged.
Where SIC 68100 clusters in the UK
ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN · COMPANIES HOUSE REGISTER, AUGUST 2026
SIC 68100 companies, as leads
Live rows from the enriched register. Email and phone values are withheld until you sign up.
Tell us the kind of company you sell to and we find them on the public record. One credit is one lead: the record, the director, a verified website and a verified email. If we cannot complete it, you are not charged. 25 free to start, no card.
About SIC 68100
Why do BTL landlords file SIC 68100?
Tax. Holding buy-to-let property in a ltd company brings back mortgage interest relief that private landlords lost. Firms file 68100 when the company holds property as stock. They file 68209 when they let it on long-term contracts.
How do I tell SIC 68100 landlords from developers?
Developers file 41100 (development of building projects). Buy-to-let landlords file 68100 (buying and selling) or 68209 (letting). Some companies file all three. Accounting category is a good tiebreak, since developers are usually the larger entity.
Find UK SIC 68100 companies
✓ No card · ✓ 25 free leads · ✓ Cancel anytime