
Custom-made products from our own joinery: built-in furniture, kitchens, upholstery and complete interior fitting from a single source.

Raumideen Christoph Oberste e.K.
Iserlohn · DortmundNew on Amplifa
About raumideen
Raumideen Christoph Oberste e.K. is a furnishing house with locations in Iserlohn and Dortmund that has been offering interior design, furnishing and craft services from a single source for over 30 years. Its manufacturing services include custom-made products in the company's own furniture workshop: built-in wardrobes, cabinet systems, kitchens, cloakrooms and built-in furniture made of solid, edge-glued laminated and veneered wood, combined with stainless steel, metals and glass. The in-house paint shop lacquers furniture fronts and surfaces in all RAL colours, including curved fronts and special dimensions. The in-house upholstery and sewing workshops produce and rework upholstered furniture such as sofas, armchairs, benches and seat cushions for commercial projects by hand. As a SieMatic studio provider, kitchens are also planned and implemented. The company furnishes private customers, businesses, hotels and holiday properties, operates nationwide and internationally, and provides consulting, planning with 3D visualisation, lighting and acoustics planning as well as delivery and installation.
- Site
- Iserlohn
- Processes
- Furniture joinery / made-to-measure furniture (custom production of built-in furniture, cabinets,, Lacquering of furniture fronts and surfaces (own paint shop), Upholstery: re-padding, re-upholstering and new production of upholstered furniture (sofas,, Sewing shop (upholstery fabrics, seam work, stitching, sewn-in appliqués), Installation of furniture and fittings (in-house installation team, delivery and assembly), Interior fitting (complete interior fitting with trade partners), Room concepts & interior design (planning, 3D visualisation, project management), Lighting and acoustics planning
- Materials
- Wood (solid), Edge-glued laminated wood, Veneer, Stainless steel, Metals, Glass, Lacquer (RAL colours), Leather
- Certificates
- ISO 9001
- Industries
- Private customers, living, B2B commercial furnishing (offices, hotels, businesses), Holiday properties
- 01
Consultation and needs analysis
- 02
Planning and 3D visualisation
- 03
Custom manufacturing in the workshop (joinery, paint shop, upholstery, sewing
- 04
Delivery and installation
- 05
Trade coordination during renovations
Materials and Processes
Solid, edge-glued laminated and veneered wood
Main material of the furniture workshop for built-in furniture, cabinet systems and kitchens.
Lacquer in all RAL colours
Surface lacquering of furniture fronts in the company's own paint shop, including on curved fronts.
Stainless steel and metals
Combined with wood, produced with long-standing partner companies.
Glass
Used in custom-made products via partner glaziers.
Leather
Upholstery material for upholstered furniture, including elaborate stitching and appliqués.
Foam, pocket springs, webbing
Upholstery materials for new production and refurbishment of seat and back cushions.
Upholstery fabric and home textiles
Processed in the sewing shop and interior decoration work.
Locations

Iserlohn
DEFurnishing house, headquarters, workshops
- Lot size
- Single-item production from 1 piece
- Materials
- Wood, veneer, lacquer, leather
- Fully machine-equipped joinery
- Own paint shop
- Upholstery workshop
- Sewing shop

Dortmund
DEFurnishing house, SieMatic studio
Products and Components



Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Furniture joinery / made-to-measure furniture (custom production of built-in furniture, cabinets,Assembly | – | – | – | 1 piece (single-item production) | Solid wood, Edge-glued laminated wood, Veneer, Stainless steel, Metals, Glass |
| Lacquering of furniture fronts and surfaces (own paint shop)Surface | – | – | – | – | Wood, Lacquers in all RAL colours |
| Upholstery: re-padding, re-upholstering and new production of upholstered furniture (sofas,Assembly | – | – | – | 1 piece | Leather, Upholstery fabric, Foam, Pocket springs, Webbing |
| Sewing shop (upholstery fabrics, seam work, stitching, sewn-in appliqués)Assembly | – | – | – | – | Leather, Fabric |
| Installation of furniture and fittings (in-house installation team, delivery and assembly)Assembly | – | – | – | – | – |
| Interior fitting (complete interior fitting with trade partners)Assembly | – | – | – | – | – |
| Room concepts & interior design (planning, 3D visualisation, project management)Engineering | – | – | – | – | – |
| Lighting and acoustics planningEngineering | – | – | – | – | – |
| Interior decoration (curtains, home textiles, wall/floor design)Assembly | – | – | – | – | Fabric, Textiles |
| Age-appropriate / barrier-free renovations including coordination of all tradesAssembly | – | – | – | – | – |
| Commercial furnishing / B2B outfitting of businesses and hotelsAssembly | – | – | – | – | – |
| Kitchen studio / sales and planning of SieMatic designer kitchensEngineering | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Fully machine-equipped joinery | – | – | – | – | raumideen workshop (with system partner master joiner Stephan Huber) |
| Own paint shop | – | – | – | – | raumideen workshop |
| Upholstery workshop | – | – | – | – | raumideen workshop (upholsterer Norbert Posor) |
| Sewing shop | – | – | – | – | raumideen workshop |
Additional services
Reference customers
Quality
Production is carried out as master craftsmanship in the company's own workshops with system partners such as master joiner Stephan Huber; no certificates are known.
| Evidence | Iserlohn | Dortmund |
|---|---|---|
| ISO 9001 |
History
Over 30 years on the market (as of website)
System partner Stephan Huber brings over 20 years of experience to the furniture joinery