UK SIC 2007 · 16230
Manufacture of other builders' carpentry and joinery (SIC code 16230)
Manufacture of other builders' carpentry and joinery is UK SIC code 16230. It sits in division 16 (Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials) of the SIC 2007 list. On the August 2026 Companies House register, 8,021 active UK companies list 16230 among their SIC codes. 7,908 of them list it first. That makes it the most used code in its division.
The official title is long, but in the UK this division is mostly joinery workshops. The main code is 16230, other builders' carpentry and joinery. Firms using it make staircases, doors, window frames, roof trusses and bespoke timber parts for the building trade. Sawmilling and timber treatment businesses also sit here, in much smaller numbers. One thing separates 16230 from the installation codes in division 43. It is the workshop. These companies make the product before anyone fits it.
Related SIC codes
Who prospects SIC 16230 companies
Joinery manufacturers sell almost entirely into construction. So the people selling to them mirror the building supply chain: timber merchants, machinery dealers, CNC tooling suppliers and trade credit insurers. Builders and fit-out contractors use the same data the other way round, to find local workshops for bespoke jobs. A new incorporation often means an experienced joiner setting up alone. That is the moment for equipment finance and workshop insurance. Plenty of workshops win work by reputation and let their website slide. The poor-website filter turns that into a clear list.
Lead generation for trades & construction →How to read SIC 16230
SIC 16230 is a five-digit code, and the digits are not arbitrary. The first two, 16, are the division, manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials. Add the third and you have group 162; 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 C, manufacturing, the broadest tier there is. Reading a code left to right therefore goes from a whole sector down to one activity.
More on how SIC 16230 is built
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 16230 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 16230 are London (667), Bristol (115), Birmingham (92), Leicester (70) and Glasgow (67). 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 16230 as a filter
8,021 companies is 0.15 per cent of the 5,190,464 active companies on the UK register, and ranks 16230 most used of the 3 codes we track in division 16. 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.
More on filtering by SIC 16230
Almost everybody who uses 16230 means it: 7,908 of 8,021 companies put it first, leaving only 113 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 8 per cent and the top five post towns together hold only 13 per cent, so the remaining 87 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 16230 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: 16230, registered office in London, incorporated in the last ninety days, which turns a 8,021 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 16230 clusters in the UK
ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN · COMPANIES HOUSE REGISTER, AUGUST 2026
SIC 16230 companies, as leads
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About SIC 16230
How many UK companies use SIC code 16230?
8,021 active UK companies list 16230 (Manufacture of other builders' carpentry and joinery) among their registered SIC codes. Each company may register up to four. Of those, 7,908 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
Should a joinery business choose 16230 or 43320?
Use 16230 if you make joinery in a workshop: staircases, doors, trusses and the like. That holds whether or not you fit them yourself. Use 43320, joinery installation, if your work is fitting products made by others on site. Firms that truly do both can list both codes. The split mainly affects how buyers and insurers read your company. Companies House never queries it.
How does a company change its SIC code if the business shifts from site work to manufacturing?
File your next confirmation statement (form CS01) with the new codes. The change shows on the public register once it is accepted. There is no separate application, no evidence to supply and no decision to wait for. You can add codes instead of replacing them, up to four in total. That suits a business moving between activities slowly.
Find UK SIC 16230 companies
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