Invisible Structures
Invisible Structures, founded 1982 in Aurora, Colorado, is a privately held manufacturer of porous pavers and stormwater management products — including Grasspave2, Gravelpave2, and Rainstore3 — molded from 100% recycled plastic and sold to commercial developers, municipalities, architects, and homeowners across the U.S.
- Company typePrivate
- Founded1982
- HeadquartersAurora, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Invisible Structures does
Invisible Structures, Inc. is a privately held, family-owned manufacturer of porous paving and stormwater management products, founded in 1982 in Aurora, Colorado, where it operates its headquarters and U.S. production facility. The company's core technology is a proprietary ring-on-grid design injection-molded from 100% recycled HDPE/PP plastic, yielding products with 92–94% void space, drainage rates of 32.5–38.5 inches per square foot per hour, and compressive strength of 2,295,000 psf (15,940 PSI). Its product portfolio spans six core lines: Grasspave2 (flexible grass paving), Gravelpave2 (flexible gravel paving), Rainstore3 (modular underground water containment with 94% void space), Slopetame3 (erosion control), Beachrings2 (portable access mats), and Draincore2 (subsurface drainage), plus the Hydrogrow soil amendment and the recently announced InvisiBrick modular construction system.
The business sells primarily through project-based direct sales (request-a-quote) supported by a domestic dealer network and an e-commerce storefront, with material pricing in the $2–$5 per square foot range and installation costs of $3–$8 per square foot. Target customers span four use-case segments — commercial property owners/developers, homeowners, government and municipal projects (stormwater, LEED, ADA), and a persona segment of architects and landscape professionals — reached via CEU webinars, trade events, technical content, and 70+ public case studies including Austin FC's Q2 Stadium, the U.S. Botanic Garden, Victoria Ward Park, the Santa Monica Water Garden, and the South Battery Park City resiliency project. The firm positions itself as a single-vendor integrated stormwater solution, combining surface pavers with subsurface storage, drainage, and erosion control.
Invisible Structures remains an independent, founder-influenced business under President Olivia Harris and founder William Bohnhoff, with no disclosed external investors, parent, or subsidiary structure, an estimated 11–50 employees, and operations limited to the United States. Its 40-year continuous operation, Made-in-USA manufacturing, and dominance of the recycled-plastic permeable-paving niche form the basis of its market position.
Invisible Structures firmographics
Firmographics- Name
- Invisible Structures
- Legal name
- Invisible Structures, Inc.
- Website
- https://invisiblestructures.com
- Company type
- Private
- Founded year
- 1982
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Invisible Structures, founded 1982 in Aurora, Colorado, is a privately held manufacturer of porous pavers and stormwater management products — including Grasspave2, Gravelpave2, and Rainstore3 — molded from 100% recycled plastic and sold to commercial developers, municipalities, architects, and homeowners across the U.S.
- Ownership category
- akta.pro rank
Invisible Structures industry classification
Industry- Product category
- Porous Paving & Stormwater Management
- NAICS
- Plastics Pipe, Pipe Fitting, and Unlaminated Profile Shape Manufacturing (32612)
- SIC
- Miscellaneous Plastics Products (3080)
- akta.pro primary industry
- Concrete Pavers, Hardscape & Retaining Wall Systems (IMADAAAE)
- akta.pro secondary industries
- Pavers & Permeable Paving Blocks (Clay/Concrete) (IMADABAH), Storage & Conveyance Structures (Reservoirs, Tanks, Culverts, Tunnels) (IMAFAGAE), Recycled Water Storage & Balancing Utilities (Reservoirs, Tanks, Equalization) (EUANAGAI)
Keywords
Where Invisible Structures is headquartered
LocationHeadquarters
- HQ city
- Aurora
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Invisible Structures business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Marketing or Sales, Personnel, Technology or R&D, Infrastructure
Revenue model
- Permeable Paving Products: Sale of physical porous paving products including Grasspave2, Gravelpave2, and related components. Products are manufactured in the USA from 100% recycled plastic and sold through direct sales and dealer networks.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Porous paving material costs range from $2 to $5 per square foot |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels8 records
Invisible Structures product offering
Product offeringCore offering
Invisible Structures manufactures and sells porous paving and stormwater management products made from 100% recycled plastic in the USA. Their core portfolio includes flexible grass and gravel pavers, modular underground water containment systems, erosion control grids, drainage mats, and portable access mats, all engineered around a proprietary ring-on-grid design that delivers high void space, rapid drainage, and H-20 load-bearing strength.
Product overview
Invisible Structures offers a portfolio of six core porous paving and stormwater management products: Grasspave2 (grass-filled flexible paving), Gravelpave2 (gravel-filled flexible paving), Rainstore3 (modular underground water containment for detention/retention/harvesting), Slopetame3 (erosion control), Beachrings2 (portable access mats), and Draincore2 (drainage systems). The company also provides Hydrogrow soil amendment as an add-on for Grasspave2 installations, and recently announced InvisiBrick as a new modular construction product. All products are made from 100% recycled plastic and feature a proprietary ring-on-grid design. The products work together as an integrated stormwater management solution, with porous pavers at the surface layer and Rainstore3 providing underground water storage capacity.
Differentiator
Problem solved
Functional benefit
Products and services
- Grasspave2 Flexible grass porous paving system with ring-on-grid design, 92% void space, and drainage rate of 32.5 inches per square foot per hour; supports H-20 loading and ships in easy-to-install rolls for fire lanes, parking lots, driveways, and trails.
- Gravelpave2 Gravel porous paving solution with ring-on-grid design, 92% void space, drainage rate of 38.5 inches per square foot per hour, and compressive strength 5x that of concrete; supports virtually any vehicle weight.
- Rainstore3 Modular, stackable underground water containment system with 94% void space; designed for subsurface detention basins, retention/harvesting systems, water/rain gardens, green roofs, and sports field drainage; stores nearly 25 gallons per unit and up to 600 gallons at maximum stack height.
- Slopetame3 Erosion control product with trademark interlocking ring-on-grid design and crossbars on every row, providing immediate and permanent solution to erosion and sedimentation problems.
- Beachrings2 Slip-resistant and ADA-compliant plastic portable access mat designed for beaches, snow, and other tricky terrain.
- Draincore2 Drainage product for sports fields, golf greens, roof decks, and planter drainage applications.
- Hydrogrow Natural, anionic, non-toxic, pH-neutral soil additive that absorbs water and dissolved nutrients; helps grass grow in sand-based root zones with rapid growth response.
- InvisiBrick Modular construction system made from 100% recycled polypropylene plastic; injection-molded bricks that snap together and interlock to form layers and stacks for applications including retaining walls, foundations, roofs, and submerged structures.
Quantifiable outcome
- 92% void space enables drainage rate of 38.5 inches per square foot per hour (6x faster than concrete pavers at 6.4 inches/hour)
- +5 more outcomes
Companies that use Invisible Structures
Customer profileNamed customers7 records
Segments4 records
Ideal customer profiles4 records
Invisible Structures technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Invisible Structures partnerships and signals
Strategic signalScale indicators3 records
Recent moves6 records
Expansion highlights5 records
Invisible Structures competitors and assessment
Company assessmentOthers
- Tensar International (Geosynthetics): Tensar provides geogrid and geosynthetic products used in site stabilization, sub-base reinforcement, and erosion control — complementary to but not directly substitutable for Invisible Structures' products. Often specified alongside permeable pavers in the same civil engineering projects.
Direct peers
- ACO Drain / ACO StormBrixx: ACO manufactures modular stormwater management and drainage systems including underground storage cells analogous to Rainstore3. They compete directly for subsurface detention and retention projects in municipal and commercial infrastructure.
- Permeable Pavers (various — TRUEGRID, Paving Stones Direct): TRUEGRID and other permeable plastic paver makers offer comparable grass/gravel porous paving products. They directly compete with Grasspave2 and Gravelpave2 in the same contractor, landscape architect, and homeowner channels.
- Presto Geosystems (GEOPAVE): Presto's GEOPAVE and GEOBLOCK permeable pavers are direct competitors to Grasspave2 and Gravelpave2, serving the same commercial parking, fire lane, and access road use cases with HDPE plastic grid systems.
- Wavin (Stormwater management): Wavin's Q-Bic and other stormwater infiltration/attenuation crates directly compete with Rainstore3 for underground stormwater storage. Both serve municipal and developer infrastructure projects with modular plastic storage systems.
- StormTank: StormTank manufactures modular plastic subsurface stormwater detention and retention systems that compete directly with Rainstore3. They target similar civil engineering and commercial development customers with comparable void-space and storage value propositions.
Emerging players
- Uni-Eco / Naturelover permeable pavers: Smaller emerging plastic permeable paver brands entering the US market through online channels. They represent a long-tail competitive threat at the residential and small commercial end of the market.
Broad incumbents
- NDS (Stormwater / Drainage): NDS offers a broad portfolio of drainage and stormwater products including Flo-Well and Spee-D Channel systems. It competes with Rainstore3/Draincore2 in subsurface water management and is widely distributed through landscape and irrigation channels.
- Belgard (permeable pavers): Belgard is a major concrete hardscape manufacturer offering permeable concrete paver lines as alternatives to plastic porous pavers. Competes with Invisible Structures on aesthetics, durability, and LEED-eligible surfacing for commercial and residential projects.
- Oldcastle Infrastructure (Stormwater): Oldcastle Infrastructure (CRH) is a broad construction products incumbent offering stormwater management systems including plastic chambers, vaults, and permeable pavers. It competes in the same downstream infrastructure project pipeline but as part of a much wider portfolio.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Invisible Structures social profiles
Digital presenceInvisible Structures financial estimates
Financial estimateRevenue estimate
Valuation estimate
Invisible Structures leadership team
Management profileNumber of profiles
Profiles2 records
Invisible Structures funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Invisible Structures M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Invisible Structures
What does Invisible Structures do?
Invisible Structures manufactures and sells porous paving and stormwater management products made from 100% recycled plastic in the USA. Their core portfolio includes flexible grass and gravel pavers, modular underground water containment systems, erosion control grids, drainage mats, and portable access mats, all engineered around a proprietary ring-on-grid design that delivers high void space, rapid drainage, and H-20 load-bearing strength.
Is Invisible Structures a public or private company?
Invisible Structures is a private company. It is classified as family owned and is currently operating.
When was Invisible Structures founded?
Invisible Structures was founded in 1982. It employs 11 to 50 people.
Where is Invisible Structures based?
Invisible Structures is headquartered in Aurora, United States, in the North America region.
How does Invisible Structures make money?
One revenue line is on record: permeable Paving Products.
Who are Invisible Structures's main competitors?
Tensar International (Geosynthetics) is listed as an others. Direct peers are ACO Drain / ACO StormBrixx, Permeable Pavers (various — TRUEGRID, Paving Stones Direct), Presto Geosystems (GEOPAVE), Wavin (Stormwater management) and StormTank. Uni-Eco / Naturelover permeable pavers is listed as an emerging player. Broad incumbents are NDS (Stormwater / Drainage), Belgard (permeable pavers) and Oldcastle Infrastructure (Stormwater).
Does Invisible Structures have an API?
No public API is recorded for Invisible Structures.
What industry is Invisible Structures in?
Invisible Structures's product category is Porous Paving & Stormwater Management. Its primary akta.pro industry code is IMADAAAE, Concrete Pavers, Hardscape & Retaining Wall Systems, with a secondary code of IMADABAH, Pavers & Permeable Paving Blocks (Clay/Concrete). Its NAICS code is 32612 and its SIC code is 3080.