Company directory · Harpenden
Trade and construction companies in Harpenden
299 active trade and construction companies registered in Harpenden, Hertfordshire, by trade.
Trade companies in Harpenden in numbers
From the Companies House register and filed balance sheets, as of 1 Oct 2026. The longest-established is Amalgamated Properties Limited, incorporated in 1923.
Still trading, by year incorporated
Companies still active today, by the year they were incorporated; 2026 is the year so far.
Trades in Harpenden
- Property developers62
- Builders42
- Electricians22
- Motor traders22
- Plumbers and heating engineers22
- Specialist contractors17
- Civil engineering15
- Finishing trades13
- Cleaning companies12
- Machinery repair and installation12
- Mechanics and garages11
- Facilities management10
- Installers10
- Floor and wall tilers5
- Landscapers and gardeners5
Every company on these pages is an active private limited company that files small or micro-entity accounts. Each one has to deliver accounts to Companies House within 9 months of its year end, pay corporation tax 9 months and 1 day after it, and file a CT600 with HMRC within 12 months.
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