- Companies
- Finishing trades
- Lowestoft
- A2Z Dampproofing Ltd
A2Z Dampproofing Ltd
- Company number
- 12740460
- Incorporated
- 14 Jul 20206 years trading
- Registered office
- 3 Sanctuary Close, Kessingland, Lowestoft, Suffolk, NR33 7SX
- Nature of business
- Other building completion and finishing
A2Z Dampproofing Ltd is a 6-year-old private limited company registered in Lowestoft, company number 12740460, one of 39 building finishing companies in Lowestoft. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 £15 (+0.7%) on the year before, to £2,284.
- Net assets rose in 4 of 4 year-on-year comparisons on record.
- Current assets of £19K against £21K owed within a year: 0.9 times cover.
- 2 employees on average, down from 9 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £2,284 | £19K | £21K | 2 | |
| 30 Sep 2024 | £2,269 | £19K | 9 | ||
| 30 Sep 2023 | £2,139 | £70K | £72K | 9 | |
| 30 Sep 2022 | £790 | £52K | £53K | 9 | |
| 30 Sep 2021 | £427 | £2,356 | £2,783 | 8 |
Where A2Z Dampproofing Ltd is registered
The registered office is in Lowestoft (NR33), in the East Suffolk local authority area, East of England. Show NR33 7SX on a map.
Other trade companies in NR33
- SH24 Properties LimitedProperty developers
- Hasa24 Properties LimitedProperty developers
- R Willis Building Services LtdBuilders
- East Anglia Campers LtdMotor traders
- JB Brickwork Ea LtdBuilders
- TCM Consultants LtdBuilders
- Blackbelt Diagnostics LtdMechanics and garages
- Stellan Group LtdBuilders
Also registered at this address
22 other companies use the same registered office as A2Z Dampproofing Ltd.
- A1 Property Preservation (E.A.) LimitedFinishing trades
- A2Zdampcontrol LimitedSpecialist contractors
- Damp(UK) LtdSpecialist contractors
- Grosvenor Grass and Flooring LimitedLandscapers and gardeners
- Home Energy Consultants LimitedFinishing trades
- Homechoice Improvements LtdGlaziers
- Homechoice Installations LimitedSpecialist contractors
- Joe McBride Plumbing & Heating LimitedPlumbers and heating engineers
- Mend A Main South LimitedMachinery repair and installation
- National Renewable Electrical Services LimitedPlumbers and heating engineers
- NH Paving & Civil Engineering LimitedCivil engineering
- Niki D Plumbing & Heating LimitedPlumbers and heating engineers
- Pearce Tiling LimitedFloor and wall tilers
- R K J Plumbing & Heating LimitedPlumbers and heating engineers
- S B Watson Services LimitedPlumbers and heating engineers
- Sam Doy Carpentry and Construction LimitedJoiners and carpenters
- SN Groundcare LimitedLandscapers and gardeners
- Toby Yeaman Electrical LimitedElectricians
- Zenith Buildings LimitedSpecialist contractors
- Zenith Renewables LimitedSpecialist contractors
- Zenith Trade Windows LimitedGlaziers
- Zenith Windows LimitedFinishing trades
What happens if A2Z Dampproofing 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 12740460
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 July 2020 (6 years ago)
- Registered office
- 3 Sanctuary Close, Kessingland, Lowestoft, Suffolk, NR33 7SX
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 16 July 2026
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Lowestoft
Other active building finishing companies registered in Lowestoft.
- Anglian Installations Limited2018
- Aspect Home & Garden Limited2021
- Bagshaw Builders Limited2003
- Bane Building Services Ltd2020
- Bec (East Anglia) Limited2018
- CJS Builders East Anglia Ltd2025
- Codling Building and Landscaping Ltd2020
- DP Renovations (East Anglia) Limited2023
All building finishing companies in Lowestoft · All trades in Lowestoft · Finishing trades across the UK
Frequently asked questions
When are A2Z Dampproofing Ltd's accounts due?
A2Z Dampproofing Ltd's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is A2Z Dampproofing Ltd's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is A2Z Dampproofing Ltd still trading?
A2Z Dampproofing 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 A2Z Dampproofing Ltd do?
A2Z Dampproofing Ltd is registered under Other building completion and finishing (SIC 43390).
How old is A2Z Dampproofing Ltd?
A2Z Dampproofing Ltd was incorporated on 14 July 2020, 6 years ago.
What is the penalty if A2Z Dampproofing 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 A2Z Dampproofing 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.