Doweled Wood Buildings

We build your dream house

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K-Plus Haus

We build your dreams

Lorem Ipsum is simply dummy text of the printing and typesetting industry.Lorem Ipsum has been the industry’s standard dummy text ever since the when an unknown printer.

Doweled Wood System

We build your dream house

Lorem Ipsum is simply dummy text of the printing and typesetting industry.Lorem Ipsum has been the industry’s standard dummy text ever since the when an unknown printer.

Highest living comfort

We build your dreams

Lorem Ipsum is simply dummy text of the printing and typesetting industry.Lorem Ipsum has been the industry’s standard dummy text ever since the when an unknown printer.

Ecological and healthy

We build your dreams

Lorem Ipsum is simply dummy text of the printing and typesetting industry.Lorem Ipsum has been the industry’s standard dummy text ever since the when an unknown printer.

individual architecture

We build your dreams

Lorem Ipsum is simply dummy text of the printing and typesetting industry.Lorem Ipsum has been the industry’s standard dummy text ever since the when an unknown printer.

K-Plus Haus

We build your dreams

Lorem Ipsum is simply dummy text of the printing and typesetting industry.Lorem Ipsum has been the industry’s standard dummy text ever since the when an unknown printer.

We build your dream house

We build your dream house

Lorem Ipsum is simply dummy text of the printing and typesetting industry.Lorem Ipsum has been the industry’s standard dummy text ever since the when an unknown printer.

Highest living comfort

Solid wood building envelope made of dowel wood without thermal bridges

Maximum energy efficiency

Energy-efficient heat pumps and geothermal buffers

Innovative house technology

Individual architecture and freedom of design

Ecological, healthy and sustainable

unique living climate due to warm surface temperatures

Welcome to K-Plus Haus


Dowel wood buildings
made in Germany

We are excited about your visit and would like to introduce ourselves as the exclusive American partner of the German manufacturer Kaufmann GmbH. Kaufmann has designed this innovative solution to achieve extreme energy efficiency known as the K-Plus Haus made at its core of solid doweled wood walls.

The goal of the K-Plus Haus is to reach the highest possible energy efficiency at the most effective price point thus providing the lowest possible energy costs. We have developed synergies with natural materials and trusted components, the central one being the solid doweled wood walls, to create a uniquely comfortable and healthy environment to live in. The K-Plus system eliminates off-gassing and makes it possible for all interior surfaces to have similar temperatures.

The K-Plus heating technology makes you independent of fossil fuels as the energy is obtained through geothermal ground coils and a particularly effective heat pump. The K-Plus Komfort Ventilation System provides each room with fresh air and recovers up to 90% of the heating/cooling energy through an effective cross-flow heat exchanger. The heating and ventilation load can easily be supplied by a photovoltaic system which can also be optimized to include power storage. The total concept of an air tight building envelope that effectively eliminates thermal bridging constructed out of solid doweled wood walls mixed with ultra-efficient technology makes it possible to generate more energy throughout the year than the house consumes for heating.

There are many more details to the K-Plus Haus concept that combine the advantages of proven masonry and log/timber framing construction methods with cutting edge building science. To achieve this solution to the energy consumption problem worldwide, Kaufmann GmbH has pushed the limits of German engineering and quality control utilizing 25 years of building experience.

Florian Dengel – President Alp Built

Your Advantages


Solid wood air-tight building envelope

eliminates thermal bridging

Individual architecture

Guaranteed energy usage

Efficient heat pump

Comfort air ventilation system

with cross-flow energy recovery

Highest comfort of living

All surfaces have

the same comfortable temperature

Health conscious building materials

Fresh filtered air

570 completed projects


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Passivhaus Building Envelope with no Thermal Bridging

K-Plus Houses have a specially developed and very well insulated building envelope, with the use of ecological insulation layers, thermal bridges have been effectively eliminated. It is important to make sure that all insulation is installed evenly.

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Sustainable & Healthy Materials

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R-Value Solid Doweled Wall: R40

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Temperature Phase Shift: 19 Hours Wall / 17 Hours Roof

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Triple Glazed Passivhaus Windows: U-Value 0.6

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Any Internal Surface Temperature only +/- 4º to Air Temperature

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Higher Sound, Fire and Radiation protection from the mass of wood

Advantages & disadvantages of house construction methods


Bauzeit Statik Brandschutz Schallschutz Strahlenschutz Wohnklima Baukosten Werterhalt
K-Plus Haus
Holzständerhaus
Ziegelhaus

Advantagese K-Plus Haus


Annual energy requirement

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Efficient and Future Proof Technology

The innovative building technology in the K-Plus Haus increases the feeling of comfort and provides energy efficiency compared to conventional sources of heat like gas, oil, pellet or forced air. The system with geothermal coils(free energy from your yard), energy efficient heat pump and comfort ventilation system with heat recovery is well suited to use with a photovoltaic array. The overall  system can produce more energy throughout the year than it consumes for heating.

  • K-Plus Haus 10% 10%
  • Holzständerhaus 50% 50%
  • Ziegelhaus 75% 75%

Savings through K-Plus details

Content coming soon! Dies ausgefeilten Details im K-Plus Haus sparen bis zu ca. 20% Energie.

build your dream house

The Alp Development LLC team is ready to answer any questions you may have. We look forward to hearing from you.

contact persons


Florian Dengel

Florian Dengel

President Alp Development LLC

Phone 540.935.0380
Mobile 703.447.4778
fdengel@alpbuilt.com

James Hutt

James Hutt

VP of Sales & Marketing

Phone 540.935.0380
Mobile 540.272.1177
jhutt@alpbuilt.com

Jack O‘Neill

Jack O‘Neill

Western Regional Representative

Phone 540.935.0380
Mobile 703.283.6885
joneill@alpbuilt.com

Timm Bever

Timm Bever

Midwestern Region Representative

Phone 540.935.0380
Mobile 540.905.9481
tbever@alpbuilt.com