- Company number
- 05172036
- Incorporated
- 6 Jul 200422 years trading
- Registered office
- 9 Merlin Court, Esh Winning, Durham, DH7 9JT
- Nature of business
- Construction of commercial buildings
A.T. Construction & Maintenance Co. Ltd is a 22-year-old private limited company registered in Durham, company number 05172036, one of 120 building contractors in Durham. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £14K (-9%) on the year before, to -£174K.
- Net assets rose in 0 of 7 year-on-year comparisons on record.
- 3 employees on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | -£174K | £147K | 3 | ||
| 31 Jul 2024 | -£159K | £130K | 3 | ||
| 31 Jul 2023 | -£119K | -£14K | -£5,761 | £91K | 3 |
| 31 Jul 2022 | -£79K | £13K | £48K | £152K | 3 |
| 31 Jul 2021 | -£78K | £63K | £153K | 3 | |
| 31 Jul 2020 | -£19K | £37K | £133K | £168K | 3 |
| 31 Jul 2019 | -£4,071 | £14K | £102K | £127K | |
| 31 Jul 2018 | £138 | £27K | £101K | £127K |
Where A.T. Construction & Maintenance Co. Ltd is registered
The registered office is in Durham (DH7), in the County Durham local authority area, North East. Show DH7 9JT on a map.
Other trade companies in DH7
- Kenny's Groundworks LimitedCivil engineering
- Fastfit Automotive LimitedMechanics and garages
- Adobe Builders LtdFinishing trades
- Unlimited Labs LtdCivil engineering
- HLS Domestic Installations LtdInstallers
- J Moore Brickwork LtdBuilders
- Signature Developments (Ne) LtdBuilders
- D.R Groundworks & Landscaping Services LtdBuilders
Also registered at this address
1 other company uses the same registered office as A.T. Construction & Maintenance Co. Ltd.
- Taylor Home Design LimitedFinishing trades
What happens if A.T. Construction & Maintenance Co. Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 2028 | 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
- 05172036
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 July 2004 (22 years ago)
- Registered office
- 9 Merlin Court, Esh Winning, Durham, DH7 9JT
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 6 July 2026
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 Durham
Other active building contractors registered in Durham.
- Abbotside Construction Ltd2026
- Acquire Construction Limited2022
- Aht Construction Ne Ltd2023
- Ao Building & Development Ltd2020
- Awm Groundworks Ltd2024
- Aykley Construction Darras Hall Ltd2025
- B & W Bricklayers Ltd2020
- B Ferris Construction Ne Ltd2021
All building contractors in Durham · All trades in Durham · Builders across the UK
Frequently asked questions
When are A.T. Construction & Maintenance Co. Ltd's accounts due?
A.T. Construction & Maintenance Co. Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is A.T. Construction & Maintenance Co. Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is A.T. Construction & Maintenance Co. Ltd still trading?
A.T. Construction & Maintenance Co. Ltd is listed as active on the Companies House register as of 1 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 A.T. Construction & Maintenance Co. Ltd do?
A.T. Construction & Maintenance Co. Ltd is registered under Construction of commercial buildings (SIC 41201).
How old is A.T. Construction & Maintenance Co. Ltd?
A.T. Construction & Maintenance Co. Ltd was incorporated on 6 July 2004, 22 years ago.
What is the penalty if A.T. Construction & Maintenance Co. 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 A.T. Construction & Maintenance Co. Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 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.