What Extragroup does

extragroup GmbH is a privately-held German software company headquartered in Münster (Pottkamp 19) with a development office in Karlsruhe (Waldstr. 49) that develops and distributes specialized CAD and ERP software for the woodworking trade. Its flagship product, interiorcad powered by Vectorworks, is a manufacturing-realistic 2D/3D CAD drawing program built for furniture and interior construction, offering features such as Korpusmöbel 3D, Bauteil 3D, Konturzug 3D, automatic bill-of-materials derivation, cutting optimization, photorealistic presentation, and CNC program output. The company pairs this CAD platform with Corpora by PinnCalc, an ERP system purpose-built for joiners that automatically ingests bills of materials from interiorcad, captures working times, calculates orders, and handles correspondence from quote to invoice — marketed as a tightly integrated "CAD und ERP aus einer Hand" workflow.

The company serves a primarily SMB customer base of German-speaking carpenters, joiners, cabinet makers, and shop/exhibition builders (Laden- und Messebauer), monetizing through software licenses/subscriptions, in-person and online seminars, e-learning courses (the Aufbau Kurs publicly priced at €199.99 incl. VAT for one year), and accessories including a published practice book now in its 6th edition. It also operates as a Vectorworks dealer and certified training partner for a defined German region (northern North Rhine-Westphalia and southwestern Lower Saxony), distributes free school versions to students and lecturers, and runs a Gründer-Stipendium founder-scholarship program offering 24 months of discounted software access to qualifying carpentry-trade startups.

Extragroup pursues a direct-sales GTM motion with named account managers covering prospects, Vectorworks, and schools, supplemented by personalized online demonstrations (Zoom/TeamViewer), a YouTube content channel, and a dedicated e-learning platform. The company is led by Managing Directors Lars Busch and Stefan Braatz, has no disclosed external funding, parent company, acquisitions, or patents, and reports no AI/ML capability in its current product set — consistent with an owner-operated, vertically-specialized niche software firm in the German Mittelstand.

Name

Extragroup

Legal name

extragroup GmbH

Website

https://extragroup.de

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Extragroup GmbH is a German privately-held software company that develops interiorcad (a Vectorworks-powered CAD platform) and integrates it with Corpora by PinnCalc ERP, serving SMB carpenters, joiners, and shop builders in the German woodworking trade.

Ownership category

akta.pro rank

Product category

Woodworking CAD and ERP Software

NAICS

Interior Design Services (54141)

akta.pro primary industry

Industrial/Product & Furniture Design (BPAHAKAM)

akta.pro secondary industry

Joinery, Millwork & Casework Installation (Cabinetry, Built-Ins) (IMAFANAJ)

Keywords

• Woodworking CAD software
• Carpentry ERP software
• Furniture design software
• Interior construction CAD
• CNC manufacturing software

Headquarters

HQ city

Münster

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Software Licenses and Subscriptions: Revenue from interiorcad powered by Vectorworks CAD software and Corpora ERP software sales, including version upgrades and licensing for carpenters, joiners, and shop builders.
2. E-Learning Courses: Online video courses for interiorcad training including beginner course, advanced course, and specialized courses for manufacturing strategies (CNC, 3D printing, laser, Shaper-Origin). Aufbau Kurs priced at €199.99 including VAT, valid for 1 year.
3. Training and Seminars: In-person and online seminars and training sessions for interiorcad software, offered at reduced rates (25%) for Gründer-Stipendium scholarship recipients.
4. Accessories and Books: Sale of the interiorcad exercise book 'Aller Anfang ist leicht' by Matthias Elbracht (now in 6th edition with new E-Learning course) and accessories.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

extragroup develops, distributes, and supports interiorcad powered by Vectorworks — a manufacturing-realistic CAD drawing program for furniture and interior construction — together with Corpora by PinnCalc, an integrated ERP system for the woodworking trade. The combined solution supports 2D/3D design, photorealistic presentations, CNC program generation, automatic bill-of-materials transfer, time tracking, quoting, and invoicing for carpenters, joiners, and shop/exhibition builders. The company also resells Vectorworks industry-specific branch versions as a certified dealer and training partner in northern North Rhine-Westphalia and southwestern Lower Saxony.

Product overview

Extragroup offers a unified CAD and ERP software portfolio for carpenters, cabinet makers, shop fitters, and trade show builders. The core offering consists of two integrated product lines: (1) interiorcad powered by Vectorworks — a manufacturing-realistic CAD program for 2D/3D drafting, photorealistic rendering, and CNC output; and (2) Corpora by PinnCalc — a branch-specific ERP system for bill-of-materials, time tracking, quoting, and invoicing. Both products are deeply integrated with each other. Extragroup also resells Vectorworks Branchen (industry-specific variants of Vectorworks) and offers profacto as an additional ERP option. The company supplements its software with e-learning courses, a founder scholarship program, a free tier of Corpora, and a practice book — forming a comprehensive ecosystem for vocational training, startup, and operational use in the woodworking trade.

Differentiator

Problem solved

Functional benefit

Brands

• interiorcad powered by Vectorworks: Manufacturing-realistic CAD drawing program for furniture and interior fitting, supporting 3D and 2D design, photorealistic presentations, and CNC programs.

Products and services

• interiorcad powered by Vectorworks Manufacturing-realistic CAD drawing program for furniture and interior construction, supporting 2D and 3D drafting, photorealistic presentations, and CNC program output, including Corpusmöbel 3D, Bauteil 3D, Konturzug 3D, bills of materials, component derivation, and cutting optimization. Built for carpenters, joiners, and shop/exhibition builders.
• Corpora by PinnCalc ERP software integrated with interiorcad that automatically transfers bills of materials, captures working times, calculates orders, and handles business correspondence from quote to invoice for the woodworking trade.
• Vectorworks Branchen (Industry Branch Versions) Resale, training, and support for Vectorworks industry-specific branch versions — Basics, Architecture, Landscape, Spotlight, and Designer — distributed by extragroup as a certified dealer and training partner for northern North Rhine-Westphalia and southwestern Lower Saxony.
• E-Learning Courses for interiorcad (Einsteiger / Aufbau / interiorcad für alle Fälle) Paid online video courses covering interiorcad usage: beginner course, advanced Aufbau course (€199.99 including VAT, 1-year validity) focused on operational/production workflows, and a specialized course covering export options for laser, 3D printing, Shaper Origin, and CNC. Sold via the lernen.extragroup.de platform.
• Gründer-Stipendium (Founder Scholarship) Software Bundle 24-month discounted software bundle for qualifying founders or business acquirers in the woodworking trade who learned interiorcad in vocational or master schools. Includes the Master package of interiorcad and the full version of Corpora ERP, plus 25% reduced seminar rates.
• interiorcad Übungsbuch 'Aller Anfang ist leicht' (Practice Book) Printed and digital practice book authored by Matthias Elbracht accompanying interiorcad learning, available through the extragroup Zubehör-Shop (accessories shop).
• profacto ERP/business management software offered alongside interiorcad for business process mapping and order management, available to prospects through online presentation demonstrations via Zoom or TeamViewer.

Named customers4 records

Segments2 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• VectorworkscoreChannel Partner/ Reseller/ Distributorextragroup is a Vectorworks dealer and training partner for the northern North Rhine-Westphalia and southwestern Lower Saxony region. They distribute and provide training for Vectorworks Basics, Architecture, Landscape, Spotlight and Designer versions. interiorcad is powered by Vectorworks technology.
• PinnCalc (Corpora)coreTechnology or Integrationextragroup integrates PinnCalc's Corpora ERP software with interiorcad powered by Vectorworks. Corpora is the commercial software that perfectly complements interiorcad, enabling automatic bill of materials transfer, time tracking, order calculation, and correspondence from quote to invoice.

Recent moves6 records

Expansion highlights6 records

Market position

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@interiorcad
• LinkedInlinkedin.com/company/extragroup-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

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 Extragroup