- Company number
- 15612763
- Incorporated
- 3 Apr 20242 years trading
- Registered office
- 1 Waterside, Station Road, Harpenden, AL5 4US
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Architectural activities; specialised design activities
The Building Specialists Ltd is a 2-year-old private limited company registered in Harpenden, company number 15612763, one of 42 building contractors in Harpenden. Companies House shows its accounts as overdue: they were due on 3 January 2026.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Who runs and owns The Building Specialists Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** O*** | Director | Apr 2024 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| A*** U*** | Director | Apr 2024 | Oct 2024 |
Person with significant control
Where The Building Specialists Ltd is registered
The registered office is in Harpenden (AL5), in the St Albans local authority area, East of England. Show AL5 4US on a map.
Other trade companies in AL5
- M&T Building Services LimitedBuilders
- Rolfe Groundworks LtdGroundworks and demolition
- Rolls and Sons LtdProperty developers
- WM Holdings Group LtdProperty developers
- A Hussain Motor Group LtdMotor traders
- Harpenden Window Cleaning LtdCleaning companies
- Honey Bear Energy LimitedPlumbers and heating engineers
- M&D Paving LtdCivil engineering
Also registered at this address
7 other companies use the same registered office as The Building Specialists Ltd.
- Intech Blinds LtdRepair services
- Lddpro LimitedBuilders
- Mira Developments LimitedProperty developers
- Regal PPF LimitedMechanics and garages
- Resource Interlink LimitedCleaning companies
- Solar Am LtdMachinery repair and installation
- Velari Collective LtdMotor traders
What happens if The Building Specialists Ltd files late
If the accounts reach Companies House today, the late filing penalty is £1,500 (£3,000 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 4 Jan 2026 to 3 Feb 2026 | £150 |
| 1 to 3 months late | 4 Feb 2026 to 3 Apr 2026 | £375 |
| 3 to 6 months late | 4 Apr 2026 to 3 Jul 2026 | £750 |
| More than 6 months late | From 4 Jul 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2026 | £200 |
| 3 months late | 30 Jul 2026 | another £200 |
| 6 months late | 30 Oct 2026 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 2027 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 15612763
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 April 2024 (2 years ago)
- Registered office
- 1 Waterside, Station Road, Harpenden, AL5 4US
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Architectural activities (SIC 71111)
specialised design activities (SIC 74100) - Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 28 November 2024
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Harpenden
Other active building contractors registered in Harpenden.
- Wentbridge Construction Ltd2000
- A1Z Construction Limited2019
- Acg Construction and Refurbishment Limited2021
- Aiv Engineering Ltd2019
- Alban Developments Limited1963
- Anfora Properties Ltd2019
- Ayrton Lawrence Ltd2024
- B&N Building and Electrical Limited2019
All building contractors in Harpenden · All trades in Harpenden · Builders across the UK
Frequently asked questions
When are The Building Specialists Ltd's accounts due?
The Building Specialists Ltd's accounts were due at Companies House on 3 January 2026 and the register shows them as overdue.
When is The Building Specialists Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 2 April 2025, due by 2 April 2026, and one for the period to 30 April 2025, due by 30 April 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is The Building Specialists Ltd still trading?
The Building Specialists Ltd is listed as active on the Companies House register (checked 13 Oct 2026). Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does The Building Specialists Ltd do?
The Building Specialists Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Architectural activities (SIC 71111); specialised design activities (SIC 74100).
How old is The Building Specialists Ltd?
The Building Specialists Ltd was incorporated on 3 April 2024, 2 years ago.
Who runs The Building Specialists Ltd?
The Building Specialists Ltd has 1 active director, the longest-serving appointed in Apr 2024. Their names and service addresses are on the Companies House register.
Who owns The Building Specialists Ltd?
One person or company has significant control of The Building Specialists Ltd: an individual (owns 75% or more of the shares).
What is the penalty if The Building Specialists Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View The Building Specialists Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.