UK SIC 2007 43999: Other specialised construction activities n.e.c.

Maps to NACE Rev. 2 43.99 and NACE Rev. 2.1 42.99, 43.22, 43.23, 43.35, 43.41 and 5 more. ISIC Rev. 4: 4390.

UK SIC 2007 code 43999 is "Other specialised construction activities n.e.c.". UK SIC 2007 follows NACE Rev. 2 at four digits and adds a national fifth digit, so the first four digits, 43.99, are the NACE Rev. 2 class "Other specialised construction activities n.e.c.". UK companies state one or more SIC codes when they file at Companies House, and the codes appear in the company record. In NACE Rev. 2.1 the NACE Rev. 2 class behind this code is split across 10 classes, so check the activity before you convert.

Conversion

Classification	Code	Label
UK SIC 2007	43999	Other specialised construction activities n.e.c.
NACE Rev. 2	43.99	Other specialised construction activities n.e.c.
NACE Rev. 2.1	42.99	Construction of other civil engineering projects n.e.c.
NACE Rev. 2.1	43.22	Plumbing, heat and air-conditioning installation
NACE Rev. 2.1	43.23	Installation of insulation
NACE Rev. 2.1	43.35	Other building completion and finishing
NACE Rev. 2.1	43.41	Roofing activities
NACE Rev. 2.1	43.42	Other specialised construction activities in construction of buildings
NACE Rev. 2.1	43.50	Specialised construction activities in civil engineering
NACE Rev. 2.1	43.91	Masonry and bricklaying activities
NACE Rev. 2.1	43.99	Other specialised construction activities n.e.c.
NACE Rev. 2.1	81.22	Other building and industrial cleaning activities
ISIC Rev. 4	4390

What the class includes (NACE Rev. 2 notes)

This class includes: - construction activities specialising in one aspect common to different kind of structures, requiring specialised skill or equipment: • construction of foundations, including pile driving • damp proofing and water proofing works • de-humidification of buildings • shaft sinking • erection of steel elements • steel bending • bricklaying and stone setting • scaffolds and work platform erecting and dismantling, excluding rental of scaffolds and work platforms • erection of chimneys and industrial ovens • work with specialist access requirements necessitating climbing skills and the use of related equipment, e.g. working at height on tall structures - subsurface work - construction of outdoor swimming pools - steam cleaning, sand blasting and similar activities for building exteriors - rental of cranes and other building equipment, which cannot be allocated to a specific construction type, with operator

What it excludes

This class excludes: - rental of construction machinery and equipment without operator, see 77.32

Other UK SIC codes in the same NACE class

43991 Scaffold erection

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UK SIC 2007: Companies House condensed list of the ONS classification (gov.uk, Open Government Licence v3.0), read 2026-10-05. NACE data: EU Vocabularies (CC BY 4.0). Information only.