Heynssens & Grassman

- 580 Old Skokie Rd, Park City, IL 60085

For discerning homeowners across the northern suburbs of Chicago, transforming an outdoor space from simple yard to a luxurious, custom-designed living area requires the specialized skills of a landscape architect and a capable general contractor. Heynssens & Grassman, based locally in Park City, Illinois, has positioned itself as a distinguished design/build firm focusing on complex and high-end residential landscape projects. Operating primarily across Lake and Cook Counties, they bring over two decades of experience to clients seeking comprehensive, architecturally-informed outdoor solutions.

The firm is led by a husband-and-wife team of landscape architects, bringing a unique blend of creative design and construction management expertise to every engagement. Their work often involves creating entire compositions of trees, shrubs, and flowers, complemented by substantial hardscaping features like stone terraces, custom patios, and even architecturally significant elements such as gazebos and water features. Projects handled by Heynssens & Grassman typically span a wide scope, from the revitalization of urban lots to the development of sprawling estates with complex environmental and historical considerations across the North Shore.

A key part of their general contractor offering is the specialization in large-scale residential amenities. One customer highlights the custom, thoughtful design work, noting how Renee created a "beautiful herb garden" with a subsequent redesign of the rest of the yard to achieve a cohesive, beautiful balance. This focus on detail—whether it is the creation of a functional Italian-style herb garden or the integration of a custom swimming pool—demonstrates their capacity to handle projects that are both intensely practical and deeply personal to the Illinois homeowner. However, it is important for prospective clients to be aware that, like any major contractor, experiences can vary. One review, unfortunately, details a difficult experience involving a necessary legal resolution to recover remediation costs, emphasizing the critical need for clear communication and meticulous project oversight in any large-scale contracting job.

Despite varied individual experiences, the firm's longevity and focus on architectural landscape design demonstrate their long-standing presence and recognized niche in the high-end Illinois outdoor design and build market.

Heynssens & Grassman maintains their field office in Park City, a strategically located municipality in Lake County, Illinois. This base allows them to efficiently manage and deploy resources across their primary service area, which includes the affluent northern suburbs of Chicago.

Park City is ideally situated near the intersection of several major regional thoroughfares, including Skokie Road and the Tri-State Tollway (I-94). The office itself is located on Old Skokie Road, which is a key business and economic corridor for the city. This accessibility is vital for a general contractor handling large-scale construction and landscape remodeling projects across a wide geographic footprint in Cook and Lake Counties. The proximity to areas like Libertyville, Lake Bluff, and Lake Forest—where many of their specialized residential projects are located—ensures that the team can maintain site supervision and respond to project needs effectively.

The official field office address and contact details are:

Address: 580 Old Skokie Rd, Park City, IL 60085, USA

Heynssens & Grassman operates as a full-service design/build general contractor for outdoor environments, specializing in high-end, architectural landscape and hardscape construction. Their services are centered on creating complete, custom outdoor living spaces.

• Landscape Architectural Design: Professional services encompassing environmental assessment, detailed site planning, and complete detail design for residential and commercial spaces.
• Custom Hardscape Construction: Expertise in installing durable and aesthetically pleasing paving surfaces, including intricate Brick Patio installations and custom brick driveways.
• Custom Water Features: Specializing in the construction of diverse aquatic elements, such as Custom Swimming Pools, natural lily ponds, and sculptural water features.
• Comprehensive Landscape Remodeling: Full Landscape Project implementation and Landscape Remodeling, involving complete overall site preparation and installation of plant materials (perennial borders, tree compositions, etc.).
• Architectural Outdoor Structures: Construction of structural elements like stone terraces, garden gates, romantic rose arbors, and all-purpose gazebos.
• Utility and System Installation: Installation of necessary utility systems to support the new landscape, and construction management of all elements.
• Specialty Gardens: Design and installation of highly customized garden features, such as tailored perennial gardens, spring flowering bulb gardens, and functional Harvest Gardens like the beautiful herb garden created for a client.
• Maintenance Services: Offering maintenance of completed landscape projects, though their primary focus is on the design and build phase.

The unique value proposition of Heynssens & Grassman in the competitive Illinois contracting landscape stems from their blend of high-level architectural expertise and hands-on construction capability.

• Professional Landscape Architects: The firm is led by a husband and wife who are both professional landscape architects, ensuring that all projects are grounded in sophisticated design principles and technical site planning expertise.
• Niche in High-End Residential Projects: They specialize in large and complex residential projects, often involving historical properties or extensive estates in Chicago's North Shore suburbs, which typically require a higher level of general contractor skill and precision.
• Custom Swimming Pool Contractors: A notable and specialized feature is their capability as a general contractor for Custom Swimming Pools, a complex construction element that few landscape companies offer internally.
• Full Design/Build Model: They manage the project from environmental assessment and site design to full implementation and construction management, providing clients with a single point of contact for the entire process.
• Wide Hardscape Expertise: The team is capable of implementing a variety of materials and structures, from elegant stone terraces and retaining walls to durable paver driveways and custom brick installations.
• Aesthetic Detail and Personalization: Successful projects highlight an ability to translate personal desires, such as a client’s love for Italian herbs, into meticulously designed, functional, and beautiful garden spaces that integrate seamlessly with the overall yard design.

For Illinois residents in the greater Chicago North Shore area looking to engage a landscape architect and general contractor for a custom outdoor remodel or a new, large-scale project, contact Heynssens & Grassman directly.

Address (Field Office): 580 Old Skokie Rd, Park City, IL 60085, USA

Phone: (847) 360-0440

Mobile Phone: +1 847-360-0440

Choosing a general contractor for a high-value outdoor project in Illinois should be based on a proven track record for specialized, complex work, which is where Heynssens & Grassman excels. Their core strength lies in their identity as landscape architects first, meaning every Brick Patio, Landscape Remodeling, or Custom Swimming Pool project begins with sophisticated, professional design and site planning—not just simple installation. This focus is particularly valuable for North Shore homeowners with challenging terrain, historical properties, or unique aesthetic visions.

However, potential clients must exercise due diligence, especially given the publicly available information indicating past client difficulties requiring legal action for project remediation. For complex and expensive projects, clear contract terms, scheduled progress checks, and defined quality benchmarks are paramount. For the client who requires the high level of technical and artistic expertise necessary for a truly custom project—such as integrating water features or designing a harmonious, full-scale garden composition—Heynssens & Grassman offers a rare, architect-led design/build capacity in the region. Their portfolio of specialized features like Custom Swimming Pools and custom-designed herb gardens shows they can deliver on unique, client-specific demands, provided the project management aligns with the client's expectations for completion and quality. Their longevity suggests that for many clients, this design and build synergy is precisely what they need to create their enduring outdoor masterpiece.

Heynssens & Grassman

580 Old Skokie Rd, Park City, IL 60085, USA