Singapore-based OnSite has closed a S$1.7 million seed round led by Tin Men Capital and Alter Global, with Hustle Fund and Gondor Capital also participating. The startup is building an AI-powered communication platform for construction and facilities management teams – one that organises voice notes, photos, and text by project, location, and timeline, automatically. The focus is Southeast Asia, where multilingual worksites and WhatsApp-dependent workflows are creating a well-documented, expensive problem.
WhatsApp runs construction. That’s not a knock on the industry – it’s just the reality on worksites across Southeast Asia, and honestly, a lot of the world. Site supervisors send voice notes. Subcontractors share photos in group chats. Project managers try to piece together what happened, when, and where from threads that nobody can search or audit. When a dispute lands, the evidence is buried inside someone’s phone.
OnSite, a Singapore-based startup, is building around that problem. The company raised $1.7 million in seed funding to develop an AI communication platform designed specifically for construction and facilities management teams. The round was co-led by Tin Men Capital and Alter Global, with Hustle Fund and Gondor Capital also participating.
The pitch is direct: keep the messaging behaviour that site workers already use, but give it a structured data backbone. Every voice note, photo, and text message gets tagged automatically to a project, location, and timestamp – without anyone needing to do the filing themselves.
What OnSite Actually Does
A messaging layer with a memory
The core product works like a purpose-built messaging system for construction teams. Workers communicate the way they already do – voice notes, photos, text – but the platform automatically organises that material by project, location, and timeline. Nothing gets lost in a group chat. Everything is searchable. And critically, it’s designed to work without formal training, even in environments where crew members are switching between Mandarin, Tamil, Bengali, Cantonese, Malay, and English in the same conversation.
That multilingual capability isn’t a feature add-on – it’s central to the product’s relevance in Southeast Asia, where construction workforces are typically diverse and the communication overhead is high. OnSite currently supports more than eight languages, which covers a solid portion of the regional labour mix.
The founders – Poh Yong Han (CEO) and Liam Appelson (CPO) – both come from construction family backgrounds, in Singapore and New York respectively. Poh holds a PhD in anthropology from Oxford; Appelson studied physics at Yale and has hands-on experience in carpentry and industrial design. The combination gives the company an unusual research-and-craft foundation for a ConTech startup. They’re currently in beta with design partners in Singapore and Hong Kong.
“The core problem in construction is that documentation and communication are chaotic, unsearchable, and disconnected from the physical worksite, often resulting in costly disputes, delays, and lawsuits.”Poh Yong Han, CEO and co-founder, OnSite
The Market They’re Going After
Singapore is a beachhead, not the ceiling
Singapore’s construction sector is larger than it often gets credit for in tech circles, with projected output of S$47-53 billion in 2026. OnSite estimates that digital inefficiencies alone cost the local sector more than S$1.1 billion annually. That’s the addressable pain in one city-state. Scale that thinking regionally – across Malaysia, Indonesia, Hong Kong, and beyond – and the numbers get considerably bigger.
The global figure OnSite cites is striking: bad data and fragmented workflows cost the worldwide construction industry an estimated S$2.47 trillion in 2020. That number comes from a widely referenced industry analysis, and while trillion-dollar addressable market claims should always be taken with some skepticism in early-stage pitch decks, the underlying problem is real and well-documented. Construction has one of the worst data retention and retrieval problems of any major sector.
The Singapore ConTech funding environment is still relatively thin. According to Tracxn data cited by OnSite, construction tech companies in Singapore raised just S$3.2 million across two rounds last year, and S$140.7 million over the past decade. This seed round represents a meaningful slice of that total, and signals some early conviction from regional investors that the communication and documentation layer is worth backing.
- Disputes start with missing records. When a subcontractor claims they flagged an issue and the general contractor has no record of it, the fight is expensive for everyone. A searchable, timestamped communication trail changes that dynamic substantially.
- WhatsApp isn’t going away. The behaviour is too embedded to fight. Products that work with existing habits – rather than asking workers to adopt entirely new systems – have a better shot at actual adoption on site.
- SME contractors carry the most risk. OnSite’s focus on small and mid-sized contractors is deliberate. These firms often lack the admin infrastructure to manage documentation properly, but they carry the same legal and commercial exposure as larger players.
The Investor Rationale
Tin Men Capital’s regional construction bet
Tin Men Capital is the lead investor, and this isn’t their first construction tech position. The Singapore-focused VC already holds stakes in Hubble and Ailytics – both operating in the AEC and built environment space. Co-founder Jeremy Tan framed the investment around the need for tools that fit the specific, culturally complex workflows of Southeast Asian construction, rather than products built for Western markets and ported across.
That’s a fair read of the regional dynamic. Construction software developed in the US or Northern Europe often struggles with adoption in Southeast Asia because the workforce profile, communication norms, and procurement structures are different enough to matter. Alter Global, Hustle Fund, and Gondor Capital complete the cap table – a combination that suggests OnSite is being positioned as a Southeast Asian category builder with potential to export the model.
“If it takes training, we’ve failed.”Liam Appelson, CPO and co-founder, OnSite
What Comes Next
From messaging layer to project intelligence
The seed capital will go toward expanding the engineering team and building out the product roadmap. Planned features include a construction-specific AI assistant trained on project chat data, predictive risk assessment tools, project analysis capabilities, and integrations with third-party systems. That arc – from communication capture to structured project intelligence – is a sensible progression, and it’s one playing out across the broader ConTech AI space.
The comparison to draw here is less with Procore or Autodesk and more with lightweight, mobile-first tools that have found traction in markets where enterprise software doesn’t land well. If OnSite can build a reliable data layer under the communication habits workers already use, the AI features on top become genuinely useful rather than bolted on. Data quality first, intelligence second – that’s the sequence that matters.
OnSite vs. the Broader ConTech Communication Stack
How it compares to adjacent tools
| Tool | Primary Use Case | Target Market | Multilingual Support | AI Features | Stage |
|---|---|---|---|---|---|
| OnSite | Site communication and documentation | SME contractors, SEA | Yes (8+ languages) | Auto-tagging, assistant (planned), risk tools (planned) | Seed / Beta |
| Procore | Full project management suite | Mid-to-large contractors, global | Limited | Analytics, document review integrations | Public / Enterprise |
| PlanGrid (Autodesk) | Field collaboration and drawings | Enterprise contractors | Limited | Drawing management, RFI tracking | Enterprise |
| Fieldwire | Task and punch list management | Mid-market, global | Moderate | Basic reporting | Growth / Part of Hilti |
| Hubble (SG) | Equipment and site management | SEA contractors | Moderate | Asset tracking, utilisation analytics | Series A |
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Join 2,500+ ReadersFrequently Asked Questions
OnSite is targeting the communication and documentation gap that sits underneath most construction disputes and delays. Site teams in Southeast Asia typically rely on WhatsApp groups, phone calls, and paper to manage day-to-day project communication. That creates unstructured, unsearchable records that are difficult to use when disputes arise or when project managers need a clear picture of what happened on site. OnSite organises that communication automatically – tagging messages, photos, and voice notes by project, location, and time – without requiring workers to change their behaviour or go through formal training. (Source: IT Brief Asia)
The S$1.7 million seed round was co-led by Tin Men Capital and Alter Global. Hustle Fund and Gondor Capital also participated. Tin Men Capital is a Singapore-based VC focused on business software and frontier technology in Southeast Asia, and already has construction tech exposure through Hubble and Ailytics. Alter Global invests in technology companies operating in emerging markets globally. (Source: IT Brief Asia)
The platform supports more than eight languages commonly used on Southeast Asian worksites, including English, Mandarin, Tamil, Bengali, Cantonese, and Malay. The founders have emphasised that this isn’t just translation – it’s about building a system that works naturally in environments where workers switch languages mid-conversation, which is standard practice on many regional sites. The goal is zero training required, regardless of which language a worker is using. (Source: IT Brief Asia)
OnSite cites estimates that digital inefficiencies cost Singapore’s construction sector more than S$1.1 billion annually. At the global level, the company references an estimate that bad data and fragmented workflows cost the worldwide construction industry S$2.47 trillion in 2020. Singapore’s construction market alone is projected at S$47-53 billion in 2026, making it a substantial beachhead market before any regional expansion. In terms of the local funding environment, construction tech companies in Singapore raised just S$3.2 million across two rounds last year according to Tracxn data, which underlines how early-stage the local ConTech ecosystem still is. (Source: IT Brief Asia)
The seed capital is earmarked for engineering team expansion and product development. The planned roadmap includes a construction-specific AI assistant trained on project chat data, predictive risk assessment tools, project analysis features, and integrations with third-party systems. The company is currently in beta with design partners in Singapore and Hong Kong. The trajectory points toward building a full project intelligence layer on top of the communication data the platform captures. (Source: IT Brief Asia)
Procore and similar enterprise platforms are built around formal project management workflows, typically targeting large contractors with dedicated admin teams and significant software budgets. OnSite is designed for the other end of the market – small and mid-sized contractors, mobile-first environments, and multilingual teams that don’t have the resources or appetite for full enterprise software rollouts. The core design principle is consumer-grade usability with enterprise-grade data structure underneath, which is a deliberate departure from the training-heavy implementations that have historically held back construction tech adoption at the SME level. We’ve covered the broader AI shift in construction workflows in more depth here. (Source: IT Brief Asia)
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