£412
+126%vs Jun 2024Active13435611Private limited companyCroydon
CRYSTAL DAMP PROOFING & BASEMENTS LTD
Significant control: Lukasz Mikolajczyk (75–100%)
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
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What does Crystal Damp Proofing & Basements Ltd sell?
Registered activity: Plumbing, heat and air-conditioning installation (SIC 43220). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
CRYSTAL DAMP PROOFING & BASEMENTS LTD is an active private limited company (company number 13435611) incorporated on 3 June 2021, registered in Croydon. Its registered activity is plumbing, heat and air-conditioning installation (SIC 43220). Latest micro accounts cover the period ending 30 June 2025, showing net assets of £412, with 2 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets rose 126% on the prior period (£182).
Peer position · net assets
By net assets it sits in the lower half of 3,492 comparable companies in Greater London (median £4,840, upper quartile £27k).
02
Ownership and control
- Mr Lukasz Mikolajczyk
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.
03
Key dates
- Incorporated
- 3 June 20215 yrs ago
- Next accounts due
- 30 March 2027in 155 days
- Confirmation statement due
- 17 June 2027in 234 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 43220
- Plumbing, heat and air-conditioning installation
- SIC 43290
- Other construction installation
- SIC 43310
- Plastering
- SIC 43999
- Other specialised construction activities n.e.c.
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
2
−33%vs Jun 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 June 2025 | £412 | — | — | £35k | — | — | 2 |
| 30 June 2024 | £182 | — | — | £27k | — | — | 3 |
Current ratio0.95Current assets ÷ creditors within one year
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing; micro-entity accounts contain no profit and loss account.
06
Filing and accounts signals
- Net assets above zeroNet assets £412 at 30 June 2025
- Net assets up 10% or more on the prior period+126.4% vs prior period
- Current assets below creditors within one yearCurrent ratio 0.95
- Incorporated five or more years agoIncorporated 3 June 2021
Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.
07
Timeline
- Confirmation statement duein 234 days
- Next accounts duein 155 days
- Accounts period endNet assets £412 · micro accounts
- Accounts period endNet assets £182 · micro accounts
- Incorporated
08
Similar companies in Greater London
- BLOSSOM PROPERTIES ML LTDWallington · inc. Jun 2021
- PUMP MECHANICAL LTDGravesend · inc. Jun 2021
- KM CONTRACTORS LTDEdgware · inc. Jun 2021
- PLUMBDON LTDEnfield · inc. Jun 2021
- GLOW WARM LTDHounslow · inc. May 2021
- GR GAS&HEATING LIMITEDEpsom · inc. May 2021
All companies incorporated on 3 June 2021 · in Jun 2021.
09
Reminders for CRYSTAL DAMP PROOFING & BASEMENTS LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.