Private ¡ Company ¡ Aksjeselskap
SERWENT TT-TEKNIKK AS
940 484 871 âConstruction of utility projects for fluids ¡ NACE 42.210Lillestrømwww.tt-teknikk.no â
ⳠBrreg ¡ companies
Won a public contractOct 2025 ¡ Oslo kommune v/ Boligbygg Oslo KF
Group financialsNOK
FY22 ¡ 248MFY23 ¡ 259MFY24 ¡ 253M
RevenueNet profit
Regnskapsregisteret ¡ company_revenue
Job ads on NAV Arbeidsplassen12 MO
SEPNOVJANMARMAYJUL
NAV only â jobs posted elsewhere are invisible to us.
NAV Arbeidsplassen ¡ company_job_ad_months
Public contracts ¡ won â est. expiryaward dates from Doffin/TED ¡ hatched = our estimate, end dates aren't published
Oslo kommune v/ Vann- og avløpsetaten
kr 41.5M
Oslobygg KF
â
Oslo kommune v/ Boligbygg Oslo KF
â
2024202620282030
Doffin/TED ¡ company_tender_wins
Key figuresBrønnøysund
FY22FY23FY24TREND
Revenue248M259M253M
Operating result10M-6M9M
Net result7M-7M4M
Regnskapsregisteret ¡ company_revenue
MoneyNOK
Revenue
kr 253.3M
Operating result
kr 8.77M
Net result
kr 4.28M
Total assets
kr 121.4M
Equity
kr 49.1M
FY2024 kr 253.3M vs FY2023 kr 259.3M ¡ -2% revenue
Regnskapsregisteret ¡ company_financials ¡ FY2024 (company)
Activitylast 24 mo
1
1 vacancies ¡ last ad 2026-07-22
totals on file ¡ ads-over-time series not yet in Intelligo
Registry changes
Accounts filed ¡ last_annual_accounts_year2024 â 20252026-08-03
Employees137 â 1412026-07-25
Field change ¡ registreringsdatoAntallAnsatteEnhetsregisteret2026-06-13 â 2026-07-152026-07-17
Field change ¡ registreringsdatoAntallAnsatteNAVAaregisteret2026-06-10 â 2026-07-102026-07-17
Employees137 â 1412026-07-17
NAV + JobStream ¡ company_hiring ¡ Brreg ¡ company_changes
From the FY2025 accounts
FILEDAccounts filed for FY2025.
AUDITAudited by ERNST & YOUNG AS.
BALANCEEquity kr 49.1M.
Regnskapsregisteret + Brreg roles ¡ the annual-report PDF is a paid Brønnøysund document, so these are the filed facts, not extracted prose
Timelineall sources
accounts_filed: last_annual_accounts_year2024 -> 2025Registry ¡ 2026-08-03
employees_change: employees137 -> 141Registry ¡ 2026-07-25
Ănsker du ĂĽ bli en del av et markedsledende selskap innen rørfornying og avløpstjenester?Rørlegger â LILLESTRĂMJob ad ¡ 2026-07-22
employee_change: antallAnsatte137 -> 141Registry ¡ 2026-07-17
field_change: registreringsdatoAntallAnsatteNAVAaregisteret2026-06-10 -> 2026-07-10Registry ¡ 2026-07-17
field_change: registreringsdatoAntallAnsatteEnhetsregisteret2026-06-13 -> 2026-07-15Registry ¡ 2026-07-17
employee_change: antallAnsatte141 -> 137Registry ¡ 2026-06-21
field_change: registreringsdatoAntallAnsatteNAVAaregisteret2026-05-10 -> 2026-06-10Registry ¡ 2026-06-21
field_change: registreringsdatoAntallAnsatteEnhetsregisteret2026-05-12 -> 2026-06-13Registry ¡ 2026-06-21
employee_change: antallAnsatte136 -> 141Registry ¡ 2026-05-14
field_change: registreringsdatoAntallAnsatteNAVAaregisteret2026-04-10 -> 2026-05-10Registry ¡ 2026-05-14
field_change: registreringsdatoAntallAnsatteEnhetsregisteret2026-04-14 -> 2026-05-12Registry ¡ 2026-05-14
employee_change: antallAnsatte137 -> 136Registry ¡ 2026-04-16
field_change: registreringsdatoAntallAnsatteNAVAaregisteret2026-03-10 -> 2026-04-10Registry ¡ 2026-04-16
field_change: registreringsdatoAntallAnsatteEnhetsregisteret2026-03-12 -> 2026-04-14Registry ¡ 2026-04-16
employee_change: antallAnsatte140 -> 137Registry ¡ 2026-03-13
field_change: registreringsdatoAntallAnsatteNAVAaregisteret2026-01-10 -> 2026-03-10Registry ¡ 2026-03-13
field_change: registreringsdatoAntallAnsatteEnhetsregisteret2026-01-13 -> 2026-03-12Registry ¡ 2026-03-13
Won: Oslo kommune v/ Boligbygg Oslo KFOslo kommune v/ Boligbygg Oslo KFTender won ¡ 2025-10-14
Lost: Utførelsesentreprise for rehabilitering etter kjøp- Deichmannsgate 6Oslo kommune v/ Boligbygg Oslo KFTender lost ¡ 2025-02-11
Audit opinionErnst & Young AS issued an unmodified opinion for 2024. â gir arsregnskapet et rettvisende bilde av selskapetsfinansielle stiling per 31....Annual report ¡ 2024-12-31
Going concernThe board states the accounts are prepared on a going-concern basis and expects continued growth in 2025. â Arsregnskapeterutarbeidet und...Annual report ¡ 2024-12-31
Post balance sheet eventThe board reports no special uncertainty and no events after the balance sheet date not reflected in the accounts. â Styret serikke at rs...Annual report ¡ 2024-12-31
Share capitalShare capital of NOK 3 252 000 divided into 3 252 shares of NOK 1 000. â Aksjekapitalen pa 3 252 000 bestar av 3 252 aksjer a kr 1 000Annual report ¡ 2024-12-31
OwnershipParent company is Serwent Holding AS at Vollsveien 19, Lysaker. â MorselskapetSerwent HoldingASharforretningskontoriVollsveien19,1366Lysa...Annual report ¡ 2024-12-31
OwnershipThe parent is part of the Surf BidCo AS group; Surf Top Holding AS is exempt from consolidated accounts due to temporary ownership. â inn...Annual report ¡ 2024-12-31
OwnershipRelated-party note shows the parent was Recover for Jan-Jul 2024, indicating a change of parent during the year. â Morselskap -Recover 2...Annual report ¡ 2024-12-31
OwnershipThe company holds 15% of the shares in Akershus Miljø AS, carried at cost of NOK 1 200 000. â Selskapet eier 15% av aksjene i Aksershus M...Annual report ¡ 2024-12-31
Pledge or guaranteeUnder a share pledge agreement dated 30.10.2024 the company's shares are pledged to lenders via the parent Serwent Holding AS. â Selskape...Annual report ¡ 2024-12-31
Loan or financingThe pledge covers a total loan amount of TNOK 610 as of 31.12.2024 to a bank syndicate lending to Surf Bidco AS. â BidcoAS,oggjelderforet...Annual report ¡ 2024-12-31
Skiwo ¡ company_events
Tenders3 wins ¡ 1 loss
Won â buyer Oslo kommune v/ Boligbygg Oslo KF
Won â buyer Oslobygg KF
Won â buyer Oslo kommune v/ Vann- og avløpsetaten
Lost â buyer Oslo kommune v/ Boligbygg Oslo KFinferred
2025-02-11
Relevant open tenders â matched NACE 42.210 â CPV
subscribers sharpen matches with per-company keywords
open-tender matching (NACE â CPV) awaits Intelligo's open-tenders view
Doffin/TED ¡ company_tender_wins ¡ 2026-08-03
People3 roles
registered roles only ¡ website-employee lookup awaits the crawler
Roles from Brreg, shown for business contact only. No birth date is shown or exported (purpose limitation, GDPR Art. 6(1)(f)).
Brreg ¡ company_people
Structure
OWNERSHIP CHAIN ¡ ULTIMATE â THIS
65%SURF TOP HOLDING AS
100%SURF TOPCO AS
100%SURF BIDCO AS
95%SERWENT HOLDING AS
self
Owned by â ¡ top 2
SERWENT HOLDING AS
95.0%SERWENT HOLDING AS
5.0%AksjonÌrregisteret ¡ company_ownership ¡ 2025 ¡ both directions
LocationLillestrøm
Lillestrøm
municipality only ¡ street address + coordinates not yet in Intelligo
Brreg ¡ registered municipality