Architecture + Energy

What Architecture + Energy does

Architektur + Energie is a Stuttgart-based sole proprietorship offering integrated architecture and energy consulting services to private residential clients, property developers, and municipalities in Baden-Württemberg and selectively elsewhere in Germany. The firm operates under owner Heinz Peter Matheis, a registered independent architect (Freier Architekt, Architektenkammer Baden-Württemberg Kammernummer 055050) with dual credentials in engineering and energy economics, and combines architectural design with energy advisory under one roof. Its service portfolio is organized into five modules: Neubau (energy-efficient new construction to KfW 40/70/100/115 standards), Sanierung (renovation and barrier-free conversion), Öffentlich (public-sector projects), Gutachten (expert assessments including Sanierungsfahrplan, Energieausweis, Thermografie, and Sanierungsgutachten), and Wettbewerb (competition participation).

The firm's core technology is the integration of architectural design — facade, material selection, interior layout — with energy supply planning, delivered through formal credentials that include BAFA energy consulting for residential buildings and WTA certification for historic monuments (Baudenkmale). This dual credentialing enables the firm to advise on KfW/BAfA subsidies and to undertake Denkmalschutz-protected renovations, while a specialized barrier-free design capability is informed by the principal's personal experience with multiple sclerosis. A proprietary rooftop heat-pump concept that extracts environmental energy from beneath and under the building represents a notable engineering innovation on top of conventional practice.

The business model is project-based fee-for-service, with pricing quoted per mandate and not publicly disclosed; disclosed reference construction budgets range from approximately €400,000 for a KfW 70 single-family home in Weinstadt to approximately €1.8 million for an 18-unit multi-family renovation in Stuttgart-Mühlhausen. The firm has no external funding, no parent or subsidiary structure, and no employees disclosed beyond a 1-10 headcount band. Customer acquisition relies on a single-website digital presence (architekturundenergie.info), direct telephone and email outreach, personal referrals within the Stuttgart regional network, and selective cooperation with peer firms (Einsiedel Architekten, Gujber Architekten) to extend capacity on public buildings, competitions, and larger residential mandates.

Name

Architecture + Energy

Legal name

Heinz Peter Matheis, Freier Architekt

Website

https://architekturundenergie.info

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

Stuttgart-based sole proprietorship offering integrated architecture and energy consulting — designing and renovating residential and public buildings to KfW efficiency standards, with rare dual BAFA and WTA heritage-energy credentials serving homeowners, developers, and municipalities in Baden-Württemberg.

Ownership category

akta.pro rank

Product category

Sustainable Architecture & Energy Consulting Services

NAICS

Architectural Services (54131), Architectural, Engineering, and Related Services (5413), Engineering Services (54133)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industries

Energy Systems & Power Engineering Consulting (BPAHAIAG), Space Planning & Workplace Design (BPAHAKAI)

Keywords

• Energy-efficient architecture
• Building renovation services
• Energy consulting
• Heritage building renovation
• Barrier-free design

Headquarters

HQ city

Stuttgart

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations

Distribution channels1 record

Marketing channels3 records

Core offering

Architecture + Energy is a Stuttgart-based architecture office operated by freelance architect Heinz Peter Matheis that delivers integrated architectural design and energy consulting services. The firm designs energy-efficient new buildings (to KfW 40/70/100/115 standards) and renovations, combines facade design, material selection, and interior design with energy supply planning, and produces expert assessments including energy certificates, thermography, and renovation roadmaps for both private clients and public institutions.

Product overview

Architektur + Energie is an architecture firm based in Stuttgart, Germany, offering integrated architecture and energy consulting services. The company provides a comprehensive portfolio of building design, renovation, and assessment services organized into distinct service lines: Neubau (energy-efficient new construction to KfW standards), Sanierung (building renovation and modernization), Öffentlich (public sector projects), Gutachten (expert assessments including Sanierungsfahrplan, Energieausweis, Thermografie, and Sanierungsgutachten), and Wettbewerb (architecture competition participation). The firm's core offering centers on the integration of architectural design with energy efficiency expertise, delivered through services like energy consulting, project management, and on-site construction management.

Differentiator

Problem solved

Functional benefit

Products and services

• Neubau (Energy-Efficient New Construction) Energy-efficient new building design services for residential and multi-family homes built to KfW efficiency standards (KfW 40, KfW 70, KfW 100, KfW 115), targeting private homeowners and property developers.
• Sanierung (Building Renovation) Building renovation and modernization services transforming existing structures into energy-efficient, barrier-free living spaces, including comprehensive rehabilitation and conversion projects for private clients and public institutions.
• Öffentlich (Public Building Architecture) Architecture and energy consulting services for public buildings including schools, daycare centers, community centers, town halls, and student dormitories in Germany.
• Gutachten (Expert Assessments) Professional assessment services encompassing renovation roadmaps, energy certificates, thermographic inspections, and renovation assessments for heritage buildings, delivered to private and public sector clients.
• Sanierungsfahrplan (Renovation Roadmap) Step-by-step renovation planning document outlining recommended energy efficiency improvements for existing buildings over time, used by private homeowners and property owners seeking funding-eligibility roadmaps.
• Energieausweis (Energy Performance Certificate) Official energy performance certificate documenting a building's energy consumption and efficiency rating as required by German law, issued to private property owners, developers, and municipalities.
• Thermografie (Thermographic Inspection) Thermal imaging analysis to identify heat loss, thermal bridges, and insulation deficiencies in building envelopes, used to inform renovation decisions for private homeowners and public building operators.
• Sanierungsgutachten (Heritage Building Renovation Assessment) Comprehensive renovation assessment for historic monuments and heritage buildings, evaluating structural condition and energy improvement potential to meet federal funding requirements (e.g., BMU model projects).
• Wettbewerb (Architecture Competitions) Participation and submission services in architectural competitions for cultural institutions, residential complexes, and public facilities, including competition preparation and design entries.

Quantifiable outcome

• Buildings designed to KfW 40, KfW 70, KfW 100, and KfW 115 energy standards — achieving up to 30% less fuel consumption compared to comparable new buildings.
• +3 more outcomes

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Einsiedel ArchitektencoreStrategic or Co-development PartnerLong-standing cooperation partner on numerous projects including public buildings (Kunstakademie Karlsruhe), residential renovations (Stuttgart, Waiblingen), and competitions (Jakob-Andreä-Haus Waiblingen). Einsiedel Architekten provides architectural co-development on projects requiring specialized team capacity or complementary expertise.
• Gujber ArchitektenminorStrategic or Co-development PartnerCooperation partner on the International House project in Schwäbisch Gmünd (2015 invitation competition, realized 2018) and the Verbindungshaus student dormitory in Stuttgart (2016 renovation).
• Architektenkammer Baden-WürttembergminorOthersHeinz Peter Matheis is registered as a member of the Architektenkammer Baden-Württemberg (Chamber of Architects) under Kammernummer 055050. This is a mandatory professional membership required for independent architects in Germany, providing licensing and regulatory standing.

Recent moves6 records

Expansion highlights5 records

Market position

Competitive moat3 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/architektur-energie

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Architecture + Energy