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- Durham Damp Proofing Ltd.
Durham Damp Proofing Ltd.
- Company number
- 13949838
- Incorporated
- 2 Mar 20224 years trading
- Registered office
- 36 Woodlands Avenue, Wheatley Hill, Durham, DH6 3LG
- Nature of business
- Other construction installation
Durham Damp Proofing Ltd. is a 4-year-old private limited company registered in Durham, company number 13949838, one of 31 installation companies (insulation, lifts, shutters and similar) in Durham. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 up £9,459 (+100.5%) on the year before, to £19K.
- Current assets of £14K against £13K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £19K | £9,283 | £14K | £13K | 1 |
| 31 Mar 2024 | £9,413 | £6,645 | £7,329 | £26K | 1 |
| 31 Mar 2023 | £14K | £13K | £35K | 1 |
Where Durham Damp Proofing Ltd. is registered
The registered office is in Durham (DH6), in the County Durham local authority area, North East. Show DH6 3LG on a map.
Other trade companies in DH6
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- Guardian Pest & Property Services LtdCleaning companies
- Ideal Fencing Solutions LimitedInstallers
- J. Philippe Group LtdBuilders
- PH Roads LtdBuilders
- Mpmgroundworks LtdBuilders
- K&C Construction and Development LtdBuilders
- JJ Restorations LimitedMechanics and garages
What happens if Durham Damp Proofing 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 13949838
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 March 2022 (4 years ago)
- Registered office
- 36 Woodlands Avenue, Wheatley Hill, Durham, DH6 3LG
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 17 April 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Durham
Other active installation companies (insulation, lifts, shutters and similar) registered in Durham.
- Ellpro Ltd2025
- Fibretec Telecommunications Limited2020
- FJM Groundworks Limited2025
- Foxcover Limited1998
- Green Spark Energy Ltd2023
- GW Crosby Ltd2016
- HFR Paving Ltd2024
- HLS Renovations Ltd2025
All installation companies (insulation, lifts, shutters and similar) in Durham · All trades in Durham · Installers across the UK
Frequently asked questions
When are Durham Damp Proofing Ltd.'s accounts due?
Durham Damp Proofing Ltd.'s next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Durham Damp Proofing Ltd.'s CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Durham Damp Proofing Ltd. still trading?
Durham Damp Proofing 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 Durham Damp Proofing Ltd. do?
Durham Damp Proofing Ltd. is registered under Other construction installation (SIC 43290).
How old is Durham Damp Proofing Ltd.?
Durham Damp Proofing Ltd. was incorporated on 2 March 2022, 4 years ago.
What is the penalty if Durham Damp Proofing 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 Durham Damp Proofing 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.