RTB Byg ApS
Private limited companyCVR 45975592FrederiksværkActive
RTB Byg ApS is a private limited company, based in Frederiksværk, active in construction of buildings, founded in 2025. The company is new and has been registered for 1 years.
What has changed
calculated from recorded figures and datesManagement and owners, last 24 months
- New in management: Justina Buivydiene (director, 21/10/2025).
- New owners registered: J.T.B. Holding ApS (21/10/2025).
Calculated from the latest two annual reports in sequence and from registrations in CVR. A figure that is missing in either year gives no line, and we derive no figures.
Employees
monthly figures from CVRCompare with the industry
Construction of buildings- RTB Byg ApS–
- Per Aarsleff A/SDKK 739.2m
- NCC Danmark A/SDKK 720.4m
- RTB Byg ApS–
- Per Aarsleff A/SDKK 279.8m
- NCC Danmark A/SDKK 316.9m
- RTB Byg ApS–
- Per Aarsleff A/SDKK 1.5bn
- NCC Danmark A/SDKK 538.1m
- RTB Byg ApS4
- Per Aarsleff A/S2,957
- NCC Danmark A/S1,748
Latest financial year per company. Choose up to three companies from the largest in the industry.
Owners and group
from the Public Ownership Register- J.T.B. Holding ApS100%
Management
1 active registrationsExecutive management
| Name | Role | Appointed |
|---|---|---|
| Justina Buivydiene | Director | 21/10/2025 |
- Founders
- J.T.B. Holding ApS
Signing rule: Selskabet tegnes af en direktør alene.
Address and production units
1 active production unitsEllevej 81
3300 Frederiksværk
| Production unit | Address | Employees | P number |
|---|---|---|---|
| RTB Byg ApS | Ellevej 81, 3300 Frederiksværk | 3 | 1031786831 |
Purpose
Selskabets formål er at udøve virksomhed med handel og service samt aktiviteter i tilknytning til dette.
The purpose is quoted from the register in Danish.
Changes year by year
3 registered events20253 changesfounded 1 · management 1 · ownership 1
- FoundedRegistered as RTB Byg ApS
- ManagementJustina Buivydiene appointed director
- OwnershipJ.T.B. Holding ApS registered as owner (100%)
Related companies
Same industry in Halsnæs
- Skovgårds Have ApS9 employees
- Lars Voss ApS8 employees
- Elementmontøren ApS6 employees
- Nordbyg ApS2 employees
- F.a. Entreprise ApS2 employees
- Engle Byg ApS2 employees
Largest in the industry
- Per Aarsleff A/SDKK 739.2m
- NCC Danmark A/SDKK 720.4m
- MT Højgaard Danmark A/SDKK 499.7m
- HusCompagniet Danmark A/SDKK 412.6m
- Nordstern ApSDKK 402m
- Lind & Risør A/SDKK 383.3m
Source and updates
The information comes from the Danish Central Business Register (Danish Business Authority) and from annual reports filed with the Danish Business Authority. Last synchronised 24/10/2026. The company is protected against advertising; contact details are not shown, and the data must not be used for marketing.