I.S.O.N.
Building contractor for turnkey homes, renovations, smart-home systems and historic-building restoration in Slovakia
Highlights
- ProfitableFY2025 net profit €41k · RÚZ
- New on EvolcAdded 2026-11-09
About I.S.O.N.
I.S.O.N. provides project planning, permitting, engineering and turnkey construction. Its work includes prefabricated and low-energy homes, mobile homes, smart-home systems, and renovations and restoration of historic buildings.
The company serves residential customers and organizations with building and restoration projects, offering consulting, design, coordination and construction services.
I.S.O.N. spol. s r.o. was founded in 2007 and is based in Zvolenská Slatina, Slovakia. It uses Loxone smart-home controls, heat pumps and NILAN active heat-recovery systems.
Product: Project planning, permitting, turnkey construction, prefabricated homes, smart-home systems, and building renovation and restoration services.
Financials
| FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | |
|---|---|---|---|---|---|
| Revenue | €3.4M | €3.1M | €3.1M | €3.0M | €2.2M |
| Growth | +10% | −1% | +2% | +41% | — |
| EBITDA | €267k | €184k | €314k | €143k | €160k |
| Operating profit | €91k | €45k | €230k | €88k | €93k |
| Net profit | €41k | €13k | €165k | €59k | €64k |
| Net margin | 1.2% | 0.4% | 5.3% | 1.9% | 3% |
| Personnel costs | €668k | €549k | €502k | €435k | €329k |
| Total assets | €2.0M | €1.9M | €1.3M | €898k | €957k |
| Cash | €818k | €400k | €292k | €59k | €558k |
| Liabilities | €1.4M | €1.3M | €705k | €538k | €656k |
| Equity | €661k | €620k | €608k | €360k | €301k |
As filed with RÚZ (Slovak register of financial statements). Each year links to its statement.
Public contracts
Contracts I.S.O.N. signed since 1 Nov 2024, from the Slovak and Czech public contract registers. Values as published; amendments are not counted.
Customers
17 contracts with 11 buyers · €7.3M
| Contracts | Value | |
|---|---|---|
| Banskobystrický samosprávny kraj | 1 | €1.9M |
| Obec Hrochoť | 2 | €1.3M |
| Obec Bartošova Lehôtka | 1 | €968k |
| Mesto Banská Bystrica | 1 | €658k |
| TECHNICKÉ SLUŽBY Žiar nad Hronom, spol. s r.o. | 3 | €620k |
| Obec Bzovík | 2 | €422k |
| Obec Stará Kremnička, Stará Kremnička 198, 965 01 Stará Kremniča | 2 | €402k |
| Obec Jastrabá | 1 | €366k |
Open public tenders for I.S.O.N. →
Latest contracts
- 10 Sep 2026 for Ústav ekológie lesa SAV, v.v.i., Organizačná zložka Arborétum Mlyňany · Zmluva o dielo · €137k register
- 20 Aug 2026 for Obec Bartošova Lehôtka · Zmluva o dielo - Obnova kultúrneho domu Bartošova Lehôtka · €968k register
- 11 Aug 2026 for Obec Hrochoť · Zmluva o dielo · €69k register
- 8 Jul 2026 for Mesto Banská Bystrica · Zmluva o dielo č. 1690/2026/ORA na realizáciu stavby · €658k register
- 28 May 2026 for Obec Jastrabá · Zmluva o dielo · €366k register
- 8 May 2026 for Obec Bzovík · Zmluva o dielo_NKP kláštor premonštrátov Bzovík · €205k register
Public tenders won
3 tenders won since 1 Jan 2024 from 3 public buyers in Slovakia, worth €2.6M as awarded. From EU award notices (TED) that name I.S.O.N. by its registry number.
- 13 Jul 2026 Mesto Banská Bystrica · Rekonštrukcia a modernizácia ZŠ Jozefa Gregora Tajovského v Banskej Bystrici · €535k notice
- 5 Jun 2025 Banskobystrický samosprávny kraj · Stavebné úpravy a rekonštrukcia priestorov Strednej odbornej školy drevárskej vo Zvolene · €1.9M notice
- 16 Aug 2024 Horehronské múzeum · Revitalizácia meštianskeho domu č. 13, Brezno – 1 · €160k notice
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Website technologies
Tools and platforms detected on this company’s website, grouped by purpose. Dates record when Evolc observed them.
Analytics
- Google Universal AnalyticsMedium confidence
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Detection evidence
- Integration code on pageinitialization/configuration expression
- Integration code on pageinitialization/configuration expression
- Integration code on pageinitialization/configuration expression
Content management
- WordPressHigh confidence
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- Website resourcedeclared script/iframe or software asset
Forms
- Contact Form 7High confidence
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- Website resourcedeclared script/iframe or software asset
Frontend frameworks
- jQueryHigh confidence
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- Website resourcedeclared script/iframe or software asset
Website detection does not establish a paid subscription or company-wide use. Tools loaded after consent or sign-in may be missed. “No longer observed” does not prove the company stopped using a tool.