Carpentry and timber construction company for element construction, roof structures, conversions, renovations and interior finishing from Leuggern.
Holzbau Deppeler AG
Leuggern, SwitzerlandNew on Amplifa
About Holzbau Deppeler AG
Holzbau Deppeler AG is a timber construction and carpentry company based in Leuggern in the canton of Aargau. The company plans, manufactures and implements timber construction projects for private, commercial and public clients – from single-family homes to residential developments. The range of services includes conventional timber construction, timber element construction with prefabrication in its own workshop hall, roofing, roof windows and dormers, facade construction, storey additions, conversions and renovations as well as interior finishing and panelling work. Planning is carried out with CAD design, detailed planning and 3D visualisation; the prefabricated elements are produced weather-protected, delivered using crane and lifting technology and assembled on site. Materials used include softwoods such as spruce, fir, larch and pine as well as cross-laminated timber (BSP), Kerto, OSB, three-layer panels and modified woods such as Kebony and Accoya; the origin is disclosed by means of a wood declaration. Founded in 1988 as Holzbau Attiger & Deppeler, the company today employs 22 staff, including eight apprentices, and was handed over by founder Thomas Deppeler to Stephan Sutter as of 1 January 2026.
- Site
- Leuggern
- Processes
- Timber construction / carpentry (conventional timber construction, roof trusses, roof structures), Timber element construction (prefabrication of timber elements, cross-laminated timber BSP from, Prefabrication of timber elements in the workshop (weather-protected), followed by delivery and, Roofing (new roofs, roof renovation, roof repairs, storm damage repair, brand-name roof tiles), Roof window installation (new construction, replacement, renovation), Dormer / roof dormer installation, Interior finishing & panelling work (doors, stairs, cladding, wall/ceiling panelling, exposed beams,, Facade construction (timber facades, cladding, facade renovation)
- Materials
- Spruce, Fir, Nordic spruce, Domestic larch, Nordic pine, Larch, Pine, Beech
- Founded
- 1988
- Employees
- 22
- Industries
- Timber construction, Carpentry, Private clients, Commercial clients, Public sector clients
- 01
Planning and CAD design
- 02
Detailed planning
- 03
Prefabrication of timber elements in the company's own workshop hall
- 04
Delivery and logistics with crane and lifting technology
- 05
On-site assembly
- 06
Interior finishing, plastering and sealing work, roofing
- 07
Handover as well as cleaning & service
Wood species and materials
Spruce and fir
Main construction materials for structures, roof trusses and elements from Switzerland, Germany and Austria.
Larch and pine
Weather-resistant woods for facades, balconies and exterior elements.
Cross-laminated timber (BSP)
Elements sourced from a certified partner for wall, ceiling and roof structures in element construction.
Kerto Q&S
Laminated veneer lumber for load-bearing elements and structures from Finland.
OSB3+4 and three-layer panels
Panel materials for sheathing and element construction.
Modified woods (Kebony, Accoya)
Durable woods for particularly stressed facades and outdoor applications.
Douglas fir, Sipo, Radiata Pine
Wood species used for facades and exterior elements.
WPC
Material for terrace decking and its maintenance.
Locations
Leuggern
CHHeadquarters, workshop hall and production
- Materials
- Spruce, fir, larch, pine, BSP, Kerto, OSB
- Workshop hall for prefabrication of timber elements (commissioned 2014)
- CAD design and 3D visualisation software
- Crane and lifting technology for element delivery and assembly
- Fleet of eight vehicles
Construction services and components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Timber construction / carpentry (conventional timber construction, roof trusses, roof structures)Timber construction | – | – | – | – | Spruce, Fir, Larch, Pine, Douglas fir |
| Timber element construction (prefabrication of timber elements, cross-laminated timber BSP fromTimber construction | – | – | – | – | Spruce, Fir, Larch, Cross-laminated timber (BSP), Kerto |
| Prefabrication of timber elements in the workshop (weather-protected), followed by delivery andTimber construction | – | – | – | – | Wood |
| Roofing (new roofs, roof renovation, roof repairs, storm damage repair, brand-name roof tiles)Timber construction | – | – | – | – | Roof tiles, Tiles |
| Roof window installation (new construction, replacement, renovation)Timber construction | – | – | – | – | Wood, Glass |
| Dormer / roof dormer installationTimber construction | – | – | – | – | Wood |
| Interior finishing & panelling work (doors, stairs, cladding, wall/ceiling panelling, exposed beams,Timber construction | – | – | – | – | Wood, Reclaimed wood, Parquet, Vinyl, Cork |
| Facade construction (timber facades, cladding, facade renovation)Timber construction | – | – | – | – | Wood, Kebony, Accoya |
| Terrace and pergola construction (timber terrace, WPC, stone and concrete slabs)Timber construction | – | – | – | – | Wood, WPC, Stone, Concrete |
| Carport and shelter construction (free-standing, attached, bicycle/motorcycle shelters)Timber construction | – | – | – | – | Wood |
| Timber conservatory construction with glazed areasTimber construction | – | – | – | – | Wood, Glass |
| Storey additions (roof additions, additional storeys) in timber system constructionTimber construction | – | – | – | – | Wood |
| Renovation (insulation, sound insulation, energy efficiency, CAD planning)Timber construction | – | – | – | – | Wood |
| Custom timber solutions (bench, children's playground, timber decking, privacy fence,Timber construction | – | – | – | – | Wood |
| On-site assembly (assembly of prefabricated elements, interior finishing, plastering andAssembly | – | – | – | – | Wood |
| CAD design, detailed planning, structural calculations, 3D visualisationEngineering | – | – | – | – | – |
| Cleaning & service (roof cleaning, moss removal from tiles, gutter cleaning, roof windowSurface | – | – | – | – | Tiles, Wood, WPC, Stone, Concrete |
| Delivery with cranes and modern lifting technologyAssembly | – | – | – | – | – |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CAD design and 3D visualisation software | – | – | – | – | Leuggern |
| Crane and lifting technology for element delivery and assembly | – | – | – | – | Leuggern |
| Workshop hall / production hall for prefabrication of timber elements | – | 1 | – | 2014 (Bezu | Steiächerweg 4, 5316 Leuggern |
Additional services
Reference customers
Company history
- 1988
Founding of Holzbau Attiger & Deppeler by Thomas Attiger and Thomas Deppeler in Leuggern, in Hans Schwere's sawmill
- 1989
Christoph Moll joins the team
- 1994
Separation of the business partners; the company continues as Holzbau Deppeler AG
- 1998
10th anniversary with an open day
- 2001
First apprentice in training
- 2002
Timber Prize for the Rinderstall building in Tegerfelden
- 2008
20th company anniversary; 6–8 employees
- 2010
Founding of the subsidiary Holznest with Edi Wiederkehr (architecture office Haus + Plan)
- 2011
Land purchase for the company's own new building in Leuggern; major project Häfeli Brügger AG, Klingnau
- 2013
25th anniversary; 14 employees including 4 apprentices
- 2014
Move to the new workshop hall at Steiächerweg 4 in Leuggern
- 2017
Largest timber construction contract in the company's history: residential development Bären Würenlingen
- 2018
30th company anniversary; 16 employees
- 2025
Acquisition of the company by Stephan Sutter (handover from Thomas Deppeler)
- 2026
Stephan Sutter has been managing director and owner of Holzbau Deppeler AG since 1 January 2026; fleet expanded to eight vehicles; win at the Craftsman Olympics