Baugeschäft H. Kaspar GmbH

H. Kaspar GmbH is an established and versatile partner for all construction, conversion, and renovation work in southern Aargau. Based in Oberkulm (5727), we have been successfully completing projects for private builders and companies for many years—from minor renovations to comprehensive refurbishments.

As a construction company with regional roots, quality, reliability, and customer focus are at the heart of everything we do. Our experience and expertise in the building trade guarantee professional execution of all work – on time, cleanly, and with a clear focus on your individual needs. With us, you receive reliable advice, fair prices, and personal support from start to finish.

Our range of services includes a wide variety of renovations and conversions: we carry out bathroom and kitchen renovations, complete house refurbishments, and comprehensive conversion work. This also includes the planning and implementation of new room layouts, the installation of subfloors or underfloor heating, and the installation of new plaster ceilings.

An important part of our work involves traditional masonry and extensions. Whether you are looking to build a garage, parking space, or conservatory, we will carry out your project reliably. We also undertake concrete, tiling, and plastering work, ensuring durable, high-quality results.

Outdoor work is also one of our strengths: we build attractive and functional composite stone patios, paths, and garden areas that enhance your living environment and increase the usability of your outdoor spaces. We also take care of facade insulation to improve energy efficiency and living comfort—an important contribution to the sustainable modernization of your property.

Our team not only has technical expertise, but also years of experience in dealing with a wide variety of construction tasks and materials. We attach great importance to high-quality materials, solid workmanship, and clean construction site management. In this way, we create spaces for our customers in which they can feel comfortable in the long term.

As an owner-managed company with strong regional ties, we have a thorough understanding of the local requirements and building regulations in Aargau. This enables us to plan projects efficiently, execute them smoothly, and provide optimal support—even for challenging conversions or renovation work. Our customers appreciate the direct communication, personal on-site consultation, and our commitment to completing every project to their satisfaction.

H. Kaspar GmbH stands for competent interior and exterior construction services and provides professional support throughout your construction project – whether it's a small renovation, a major conversion, or a complete refurbishment. Put your trust in our experience, quality craftsmanship, and a team that is passionately dedicated to your construction project.

Contact us for a no-obligation consultation or quote – we look forward to turning your ideas into reality.