Semble AI

Cover Block

Name	Semble AI
Tagline	AI automation for code-compliant building system design in construction [Semble AI, 2025]
Headquarters	San Francisco, CA, USA [Y Combinator, 2025]
Founded	2025 [Y Combinator, 2025]
Stage	Seed [Y Combinator, 2025]
Business Model	SaaS
Industry	Proptech
Technology	AI / Machine Learning
Geography	North America
Growth Profile	Venture Scale
Founding Team	Co-Founders (2)
Funding Label	Undisclosed (total disclosed ~$500,000) [Y Combinator, 2025][Wikipedia, 2026]

Links

• Website: https://www.sembleai.com/
• LinkedIn: https://www.linkedin.com/company/sembleai/
• Y Combinator: https://www.ycombinator.com/companies/semble-ai

Executive Summary

Semble AI automates the design of building systems like fire suppression and HVAC for construction firms, a process currently reliant on manual drafting and spreadsheets, by applying AI to generate code-compliant layouts and project estimates [Perplexity Sonar PRO BRIEF, 2025]. The company's early-stage appeal lies in its direct attack on a documented inefficiency within a large, established market, paired with the validation signal of its Y Combinator selection. Founded in 2025 by Stanford computer science graduates Jonathan Tyshler and Ethan Boyers, the company emerged from the founders' recognition of the slow, error-prone nature of traditional building system design [Y Combinator, 2025]. The core product promises to transform workflows that can take hundreds of engineering hours into automated processes completed in a few hours, starting with fire and life-safety systems [Semble AI website, 2025]. Tyshler's prior experience at Convergint, a building systems integrator, provides relevant domain insight, while Boyers' technical background anchors the AI development effort [RocketReach, 2026]. The company is backed by Y Combinator's F25 batch, with an initial seed round of $500,000 reported, operating on a SaaS model [Wikipedia, 2026]. Over the next 12-18 months, the key watchpoints will be the transition from technical development to named customer deployments, the validation of its code-compliance claims in real projects, and the expansion from its initial fire suppression wedge into adjacent mechanical and plumbing systems.

Data Accuracy: YELLOW -- Core company facts and YC backing are confirmed; market size and product capability claims are sourced from a single brief or the company's own website.

Taxonomy Snapshot

Axis	Classification
Stage	Seed
Business Model	SaaS
Industry / Vertical	Proptech
Technology Type	AI / Machine Learning
Geography	North America
Growth Profile	Venture Scale
Founding Team	Co-Founders (2)
Funding	Undisclosed (total disclosed ~$500,000)

How the Company Got Here

Semble AI was founded in 2025 by Stanford computer science graduates Jonathan Tyshler and Ethan Boyers [Y Combinator, 2025]. The company is headquartered in San Francisco, California. The founding narrative centers on applying AI to a complex, manual domain one of the founders knew from prior work, with Tyshler having experience at building systems integrator Convergint [RocketReach, 2026].

The company's primary public milestone to date is its acceptance into the Y Combinator F25 batch, announced in 2025 [Y Combinator, 2025]. This accelerator program serves as the company's launchpad and sole disclosed source of institutional backing.

Data Accuracy: YELLOW -- Foundational facts (founding year, HQ, YC participation) are confirmed by YC and Crunchbase. Team background details are partially corroborated by LinkedIn and RocketReach, but some sources have lower confidence.

Product and Technology

Semble AI's product is defined by a specific and ambitious claim: to automate the design of complex building systems, turning a process that can take hundreds of hours of manual engineering work into a task measured in hours [Semble AI, 2025]. The company's public materials focus on fire suppression, HVAC, plumbing, and security systems, promising to generate code-compliant device layouts, bills of materials, cost estimates, and client proposals [Perplexity Sonar PRO BRIEF, 2025]. The initial market wedge appears to be fire and life-safety systems [Crunchbase, 2025]. The core value proposition is not just speed, but the integration of localized building codes into the automated workflow, a critical pain point in a fragmented, regulation-heavy industry.

The underlying technology stack is not detailed in public sources. The company's hiring page indicates an active search for engineering roles, which suggests a focus on building a robust technical foundation [Y Combinator, 2025]. The requirement to parse architectural plans, apply complex and varying municipal codes, and output precise technical schematics points toward a system combining computer vision, knowledge graphs of building regulations, and generative design algorithms. No public demos, case studies, or detailed technical whitepapers have been released to substantiate the 300-hour-to-3-hour workflow transformation claim, which remains a company-stated aspiration rather than a verified metric.

Data Accuracy: YELLOW -- Product claims are sourced from the company website and a Y Combinator profile; technical capabilities and performance metrics are unverified by third parties.

Where the Demand Sits

The opportunity for automation in construction system design is driven by a persistent labor shortage and a growing backlog of projects, which forces firms to seek productivity gains wherever they can find them. Semble AI targets the building-system integration market, which a third-party brief valued at $600 billion globally [Perplexity Sonar PRO BRIEF, 2025]. This figure encompasses the design, installation, and integration of mechanical, electrical, and plumbing (MEP) systems, including fire suppression, HVAC, plumbing, and security.

Demand for automated design tools is propelled by several structural tailwinds. The construction industry faces a well-documented shortage of skilled engineers and drafters, which extends project timelines and increases costs. Simultaneously, building codes are becoming more complex and localized, raising the compliance burden on design teams. These pressures create a clear incentive for contractors and system integrators to adopt software that can compress design cycles and reduce error rates.

Key adjacent markets include broader construction management software, estimated at $10.9 billion in 2023 and projected to grow to $19.1 billion by 2028 (analogous market, MarketsandMarkets) [MarketsandMarkets], and the computer-aided design (CAD) software market, valued at approximately $11.5 billion (analogous market, Grand View Research) [Grand View Research].

Metric	Value
Total Building-System Integration Market	$600B

Data Accuracy: YELLOW -- Market sizing from a single third-party brief; adjacent market sizes from analogous industry reports.

Competitive Landscape

Semble AI enters a market defined by manual processes and fragmented software tools, positioning its AI agents as a direct replacement for incumbent design workflows rather than a feature within existing platforms.

• Incumbent design software. Established platforms like Autodesk (Revit) and Trimble provide the foundational CAD and BIM environments where manual design occurs.
• Specialized engineering consultants. The labor market itself is a competitor, comprising MEP (mechanical, electrical, plumbing) and fire protection engineering firms.
• Adjacent construction tech. A wave of startups is applying AI to various construction tasks, from layout planning (e.g., OpenSpace, Dusty Robotics for site work) to scheduling (e.g., ALICE Technologies).
• Potential future entrants. Large generalist AI platforms (e.g., OpenAI, Anthropic) or building information modeling suites could theoretically develop similar agents.

Semble's claimed edge rests on two pillars: automation specificity and regulatory navigation. The company is not building a general-purpose design tool but agents trained explicitly on fire suppression and security system logic. This focus, coupled with the founders' background in system integration, aims to create a product that understands the constraints of the National Fire Protection Association (NFPA) codes or International Building Code (IBC) sections relevant to its niche.

Data Accuracy: YELLOW -- Competitive mapping is inferred from market structure and cited product claims; no direct competitor profiles are publicly confirmed.

Opportunity

The prize for automating the design of building systems is a significant share of the $600 billion integration market currently managed through manual, error-prone processes [Perplexity Sonar PRO BRIEF, 2025].

Scenario	What happens	Catalyst	Why it's plausible
Dominant Design Tool	Becomes the standard software for MEP and fire safety engineers at top 100 construction firms.	A major general contractor or engineering firm publicly adopts the tool for a flagship project, validating its code-compliance engine.	The company's initial focus on code-compliant outputs directly addresses a primary pain point of liability and rework [Crunchbase, 2025].
Embedded System Integrator API	The AI design engine is licensed and embedded into the workflow software of large building system manufacturers.	A strategic partnership with a major manufacturer to power the design module of their own customer-facing software.	The product's claimed output aligns with the core deliverables of manufacturer design tools [Perplexity Sonar PRO BRIEF, 2025].

Data Accuracy: YELLOW -- Market size and product claims are cited from secondary briefs and the company website; founder backgrounds are corroborated by YC and LinkedIn.

Sources

1. [Semble AI, 2025] Semble AI - AI-Powered Building System Design | https://www.sembleai.com/
2. [Y Combinator, 2025] Semble AI: Autonomous building-system design for construction companies. | https://www.ycombinator.com/companies/semble-ai
3. [Crunchbase, 2025] Semble AI - Crunchbase Company Profile & Funding | https://www.crunchbase.com/organization/semble-ai
4. [Perplexity Sonar PRO BRIEF, 2025] Perplexity Sonar PRO BRIEF |
5. [Wikipedia, 2026] Y Combinator - Wikipedia | https://en.wikipedia.org/wiki/Y_Combinator
6. [RocketReach, 2026] Jonathan Tyshler Email & Phone Number | Semble AI (YC F25) CEO Contact Information | https://rocketreach.co/jonathan-tyshler-email_836755127
7. [McKinsey] McKinsey |
8. [MarketsandMarkets] MarketsandMarkets |
9. [Grand View Research] Grand View Research |
10. [LinkedIn, 2026] Ethan Boyers - CTO @ Semble AI (YC F25) | Stanford Math... | https://www.linkedin.com/in/ethan-boyers/