Core House
Kern-Haus AG is a German privately-held massivhaus home builder founded in 1980, designing and constructing individually planned architect-designed single-family homes for families and individuals across 15 regional offices in Germany, using proprietary DuoTherm solid construction with Energy Efficiency Class A+ as standard.
- Company typePrivate
- Founded1980
- HeadquartersRansbach-baumbach, Germany
- Headcount251–500
- GTM typeB2C
- OfferingServices
What Core House does
Kern-Haus AG (doing business as Kern-Haus) is a German massivhaus (solid construction) home builder founded in 1980 and headquartered in Ransbach-Baumbach, Germany. The company designs and constructs individually planned, architect-designed single-family homes for families, couples, and individuals across Germany, and has built over 15,000 homes since inception, with a current production capacity of approximately 450 houses per year. Its core technical offering is the DuoTherm massivbau construction system, a solid wall method combining internal and external insulation with steel-reinforced concrete, supplemented by traditional brick construction. Every home is built to Energy Efficiency Class A+ as standard, with optional Viessmann or Stiebel Eltron heat pumps and HomePlus photovoltaic systems, and is independently audited through a 5-phase TÜV Rheinland inspection.
The company operates a direct-to-consumer go-to-market model via 15 regional offices across Germany, supported by Musterhäuser (model homes) and exhibition centers where customers can experience homes firsthand. Named product lines include Familienhäuser, Stadtvillen, Bungalows, Bauhäuser, Doppelhäuser, Mehrfamilienhäuser, Tiny Houses, and the Nestbauhäuser entry-level series, with specific models such as Vision Plus, Signum, Linea, Karat, Vero, Allea, and Lucio. Pricing is turnkey and fixed for 24 months, backed by a 10-year warranty, with financing facilitated through approximately 300 partner banks and a plot search service leveraging a building plot database. The company is privately held, holds QNG sustainable building certification via DGNB membership, and serves exclusively German residential customers with no international footprint.
Core House firmographics
Firmographics- Name
- Core House
- Legal name
- Kern-Haus AG
- Website
- https://kern-haus.de
- Company type
- Private
- Founded year
- 1980
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Kern-Haus AG is a German privately-held massivhaus home builder founded in 1980, designing and constructing individually planned architect-designed single-family homes for families and individuals across 15 regional offices in Germany, using proprietary DuoTherm solid construction with Energy Efficiency Class A+ as standard.
- Ownership category
- akta.pro rank
Core House industry classification
Industry- Product category
- Residential Construction
- NAICS
- New Housing For-Sale Builders (236117)
- SIC
- General Bldg Contractors - Residential Bldgs (1520)
- akta.pro primary industry
- Single-Family Home Construction (Detached Homes) (IMAFABAA)
- akta.pro secondary industries
- Multi-Family Residential Construction (Apartments, Condos, Townhomes) (IMAFABAB), Residential Land Development & Subdivision Homebuilding (Build-to-Sell Communities) (IMAFABAL)
Keywords
Where Core House is headquartered
LocationHeadquarters
- HQ city
- Ransbach-baumbach
- HQ country
- Germany
- HQ region
- Europe
Offices4 records
Markets served
Core House business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Marketing or Sales, Infrastructure
Revenue model
- House Sales: One-time sales of custom-built massivhaus (solid construction) houses. Each house is individually planned by architects and built according to customer specifications. Revenue is generated per project with prices based on house model, customization, and location.
- Financing Services: Kern-Haus offers financing consultation services through approximately 300 banks, providing customers with mortgage and loan options for their house purchase.
- Land/Plot Services: Ground plot finding and acquisition support through the Kern-Haus property database containing thousands of building plots across Germany.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Multi-year contract | Turnkey house (Schlüsselfertig) including foundation slab |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels5 records
Core House product offering
Product offeringCore offering
Kern-Haus AG (trading as Core House) plans and builds individually designed, solid-construction (Massivhaus) single-family homes for private buyers across Germany, delivered as turnkey projects with fixed-price guarantees. The company operates 15 sales and construction locations nationwide and has delivered over 15,000 homes since 1980, using in-house civil-engineering and carpentry crews and a 5-phase TÜV/DEKRA inspection process.
Product overview
Kern-Haus is a German massivhaus (solid construction) home builder offering individually planned architect houses with over 45 years of experience and 15,000+ built homes across 15 locations in Germany. The company provides a comprehensive portfolio of house types including family houses, city villas, bungalows, semi-detached houses, Bauhaus style homes, multi-family houses, and tiny houses. All houses are customizable and built using solid construction methods (traditional brick or modern DuoTherm steel concrete). The company offers integrated services including turnkey construction, smart home systems, heat pumps (air-water and ground-source), photovoltaic installations, TÜV quality inspections, plot search services, and financing support. Specific named house models include Vision Plus, Signum, Linea, Karat, Vero, Allea, Easy, Lucio, Anteo, Lumina, and the Nestbauhäuser series. Equipment packages like Edition 26 provide premium fittings including electric shutters and branded bathroom fixtures.
Differentiator
Problem solved
Functional benefit
Products and services
- Individually planned architect houses (Architektenhäuser) Custom-designed single-family homes planned individually for each private buyer and built in solid construction (Massivhaus), offered for owner-occupier families across Germany.
- Turnkey solid-construction home construction End-to-end turnkey home building service covering planning, civil engineering, carpentry and handover, delivered with a fixed-price guarantee for private homeowners.
- Energy-efficient home packages (DuoTherm / heat pump / PV) Energy-efficiency features integrated into Core House homes as standard, including DuoTherm insulation, heat pumps, photovoltaic systems and controlled residential ventilation for sustainable owner-occupied homes.
Quantifiable outcome
- All houses built to Energy Efficiency Class A+ as standard
- +2 more outcomes
Companies that use Core House
Customer profileNamed customers13 records
Segments3 records
Ideal customer profiles1 record
Core House technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Core House partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core.
- Rheinquartier GmbH & Co. KGcoreKern-Haus served as development partner in the Rheinquartier residential project in Oberlahnstein near Koblenz, creating 13 custom architect houses (Rheinbogenhäuser) in the Victoriaviertel quarter, developed since 2015 in coordination with the city of Lahnstein.
- Deutsche Gesellschaft für Nachhaltiges Bauen (DGNB)coreKern-Haus is a member of DGNB and offers QNG-certified (Qualitätssiegel Nachhaltiges Gebäude) massivhaus constructions. DGNB experts support customers through the certification process for KfW 'Klimafreundlicher Neubau' funding eligibility.
- ViessmanncoreKern-Haus installs Viessmann heat pumps (air-water and ground-source) and ventilation systems with heat recovery for energy-efficient heating and hot water in their houses.
- Stiebel EltroncoreKern-Haus installs Stiebel Eltron air-water heat pumps for heating and hot water supply in their massivhaus constructions.
- TÜV RheinlandcoreKern-Haus has implemented a 5-phase TÜV quality inspection process where independent TÜV appraisers check all relevant construction phases for quality assurance.
Scale indicators5 records
Recent moves6 records
Expansion highlights6 records
Core House competitors and assessment
Company assessmentDirect peers
- WeberHaus: One of Germany's largest prefabricated and solid construction home builders, headquartered in Rheinau. Directly competes with Kern-Haus in the individually planned family home segment with comparable energy efficiency positioning and nationwide distribution.
- Town & Country Haus: Mass-market German home builder with a franchise network of regional partners. Competes directly with Kern-Haus in entry-level family homes but with a more standardized product line and volume positioning.
- FingerHaus: German family-owned home builder based in Frankenberg offering individually planned Massivhaus and prefabricated homes. Direct competitor in the custom architect house category with similar energy efficiency and full-service offering.
- Allkauf Haus: German home builder (part of DFH Group) offering massivhaus and prefabricated homes. Comparable in customer base, product range, and direct-to-consumer sales model across Germany.
- Bien-Zenker: German home builder (part of DFH Group) offering individually planned family homes in solid and prefabricated construction. Direct competitor with overlapping product portfolio and national distribution.
- Roth-Massivhaus: German solid construction home builder based in Hainichen, Saxony. Overlaps with Kern-Haus in Massivhaus construction, energy efficiency positioning, and direct sales to families in Eastern and Central Germany.
- HELMA Eigenheimbau AG: Publicly-listed German home builder specializing in solid construction (Massivhaus) single-family homes and multi-family projects. Comparable in customer base, energy efficiency positioning, and direct sales model.
- SchwörerHaus: German family-owned home builder offering solid construction and prefabricated houses with strong energy efficiency credentials. Comparable in product range, energy positioning, and direct-to-consumer sales model.
- Viebrockhaus: German Massivhaus specialist focused on energy-efficient family homes in Northern Germany. Direct competitor in the solid construction segment with similar energy efficiency class positioning.
- Heinz von Heiden Massivhäuser: One of Germany's largest Massivhaus builders, part of the Mensching Group. Direct competitor in the solid construction family home segment with comparable nationwide presence and full-service approach.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Core House social profiles
Digital presenceCore House compliance and trust
Trust signalCompliance3 records
Core House financial estimates
Financial estimateRevenue estimate
Valuation estimate
Core House leadership team
Management profileNumber of profiles
Core House funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Core House M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Core House
What does Core House do?
Kern-Haus AG (trading as Core House) plans and builds individually designed, solid-construction (Massivhaus) single-family homes for private buyers across Germany, delivered as turnkey projects with fixed-price guarantees. The company operates 15 sales and construction locations nationwide and has delivered over 15,000 homes since 1980, using in-house civil-engineering and carpentry crews and a 5-phase TÜV/DEKRA inspection process.
Is Core House a public or private company?
Core House is a private company. It is classified as unknown and is currently operating.
When was Core House founded?
Core House was founded in 1980. It employs 251 to 500 people.
Where is Core House based?
Core House is headquartered in Ransbach-baumbach, Germany, in the Europe region.
How does Core House make money?
Three revenue lines are on record. House Sales are the primary driver. The others are financing Services and land/Plot Services.
Who are Core House's main competitors?
Direct peers on record are WeberHaus, Town & Country Haus, FingerHaus, Allkauf Haus, Bien-Zenker, Roth-Massivhaus, HELMA Eigenheimbau AG, SchwörerHaus, Viebrockhaus and Heinz von Heiden Massivhäuser.
Does Core House have an API?
No public API is recorded for Core House.
What industry is Core House in?
Core House's product category is Residential Construction. Its primary akta.pro industry code is IMAFABAA, Single-Family Home Construction (Detached Homes), with a secondary code of IMAFABAB, Multi-Family Residential Construction (Apartments, Condos, Townhomes). Its NAICS code is 236117 and its SIC code is 1520.