SEHED Byggmastargruppen AB is a Sweden-based construction and property refurbishment contractor specializing in renovation, conversion, and extension (ROT) services for residential and commercial properties. Founded in 1989 and headquartered in Stockholm, Sweden, the company primarily operates across the Greater Stockholm metropolitan area and the broader Malardalen region. SEHED Byggmastargruppen AB delivers specialized building lifecycle services to housing cooperatives (bostadsrattsforeningar), municipal housing companies, institutional property owners, and commercial real estate managers. The company's core offerings and business activities encompass complete building envelope services, including facade restoration, masonry work, exterior plastering, roof replacements, balcony renovations, and energy-efficient window installations; interior and technical building modernizations, including comprehensive plumbing and pipe replacements (stambyten), bathroom and kitchen refurbishments, electrical upgrades, and tenant adaptations; environmental and damage remediation, including moisture measurement, structural drying, dehumidification, and mold decontamination; and general contracting, project management, and energy-saving retrofits such as thermal insulation upgrades and ventilation system overhauls. In recent developments, the company finalized its public listing on the Nordic Growth Market (NGM) under the ticker SEHED B, executed a group-wide organizational restructuring to integrate its specialized subsidiary brands under unified management, expanded its dedicated green-renovation and energy-optimization service capabilities to support client compliance with European Union energy performance standards, and entered strategic regional partnerships to capture growing demand in municipal infrastructure and housing modernization projects.