Illoca, a San Ramon, CA-based AI-native design interface for architects, has raised $13M in seed funding led by Bessemer Venture Partners. The company's Tracing Paper tool enables sketching, markups, references, and natural language prompts to generate editable 2D floor plans and 3D massing models that integrate with BIM/CAD tools like Revit and Rhino. The capital will support product scaling following the recent launch and early adoption by partners like Kajima Corporation.
Generative AI Design Funding Surges
The raise arrives as investor interest in AI for architecture intensifies, with Maket.ai securing $2.5M seed in 2025 and Finch3D raising $2.7M seed in 2022 per market analysis. Illoca's human-in-the-loop approach differentiates by preserving architects' creative flow, unlike competitors focused on parametric optimization or residential-only generation. This seed round, backed by tier-1 VCs, signals conviction in tools bridging ideation and production.
Manual Design Steps Slow Iteration
Architects explore ideas fluidly but face interruptions from manual drawing and modeling, limiting iterations and outcomes. Current CAD/BIM workflows demand precise inputs that disrupt creative momentum. Generative AI addresses this by automating representations, yet many tools produce static outputs lacking editability or professional integration.
Tracing Paper Preserves Design Flow
Illoca's Tracing Paper introduces an augmented sketch interface where markups and prompts yield agentic refinements, instant facades, and BIM-exportable models. Unlike Maket.ai's residential zoning focus or Finch3D's parameter-heavy Rhino plugins, Illoca emphasizes natural inputs and human control over AI outputs. Early partner Kajima Corporation validates its workflow fit for professional firms.
As Illoca co-founder Chin-Yi Cheng's team noted in launch materials:
"Architects design by exploring ideas… but each step still has to be tested through drawings and models, and creating those representations manually interrupts the flow."
Bessemer Leads Proptech AI Bet
Bessemer Venture Partners led the round, joined by AIX Ventures, Root Ventures, and others including SH Fund and angel Adam Zobler. Bessemer's Built World AI roadmap and Procore IPO highlight strategic alignment with construction software. AIX's generative AI expertise from Hugging Face investments adds technical validation, while Root's deep tech seed focus underscores Illoca's moat.
Generative Design Market Expands
The generative AI in architecture market stands at $2.07B TAM in 2026, growing at 40.9% CAGR. Competitors like Architechtures target mass residential optimization, while ArkDesign.ai focuses on developer feasibility. Illoca positions for broader studio use via multimodal AI advances in sketch processing and BIM integration.
DeepMind Expertise Drives Innovation
Co-founder Chin-Yi Cheng brings experience from Google DeepMind, enabling Illoca's credit-based, architect-controlled generations. This domain expertise from AI research bolsters differentiation in agentic design tools. The 2024-founded team's focus on professional workflows attracted top VCs early.
Enterprise Traction Builds Momentum
Kajima Corporation's early use of Tracing Paper accelerates iterations for design teams. A free trial invites broader adoption among architecture firms facing labor shortages. With $13M secured at launch, Illoca eyes scaling amid 45% of firms exploring generative design per industry reports.