# STO Building Group

> STO Building Group is a VC fund in New York backing Software and SaaS. See 7 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: New York, United States
- Total investments: 7
- Last investment: Mar 2026
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/structure-tone
- X (Twitter): https://twitter.com/structuretone?
- Website: https://stobuildinggroup.com
- Facebook: https://www.facebook.com/StructureTone/

STO Building Group is a construction management company that offers site selection, design review and modernization services.

## Contacts

5 contacts available for STO Building Group. Shizune tracks 4 team members at STO Building Group. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/sto-building-group?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 4 | 57% |
| SaaS | 2 | 29% |
| Construction | 2 | 29% |
| Apps | 1 | 14% |
| FinTech | 1 | 14% |

16 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 3 | 43% |
| Funding Round | 3 | 43% |
| Series A | 1 | 14% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| James K Donaghy | Executive Chairman | 0 | https://shizune.co/investors/profile/james-k-donaghy |
| Brett Phillips | CFO | 0 | https://shizune.co/investors/profile/brett-phillips-05e7 |
| Greg Dunkle | Chief Administrative Officer | 0 | https://shizune.co/investors/profile/greg-dunkle-958e |
| Robert Mullen | CEO | 0 | https://shizune.co/investors/profile/robert-mullen-a3f7 |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Skema | Skema powers next-level BIM with AI, helping AEC firms transform through partnerships with architects, designers & contractors. |  | Seed | Mar 02, 2026 |  |
| Trunk Tools | Trunk Tools is a construction financial technology company that aligns workers’ incentives through measurable goals based on best practices in psychology and cutting-edge AI. | $20M | Series A | Aug 20, 2024 |  |
| Outbuild | ProPlanner empowers construction professionals by providing an efficient platform for project planning, scheduling, and receiving real-time. | $2.7M |  | Jun 23, 2022 |  |
| Outbuild | Outbuild is an innovative scheduling and field coordination software solution designed to support collaboration between construction teams worldwide. As the first fully-integrated platform created exclusively for the construction industry, Outbuild brings together scheduling, lookaheads, weekly plans, and analytics in one powerful tool. Thiscomprehensive solution empowers teams to stay coordinated, minimize delays, and drive efficient project delivery. | $2.7M |  | Jun 23, 2022 |  |
| Outbuild | Outbuild is an innovative scheduling and field coordination software solution designed to support collaboration between construction teams worldwide. As the first fully-integrated platform created exclusively for the construction industry, Outbuild brings together scheduling, lookaheads, weekly plans, and analytics in one powerful tool. Thiscomprehensive solution empowers teams to stay coordinated, minimize delays, and drive efficient project delivery. | $2.7M | Seed | Jun 23, 2022 |  |
| T2D2 | T2D2 is a cloud SaaS AI company for engineers, architects, building owners and managers to store, organize and analyze inspection imagery in the cloud. Our AI computer vision software allows for automated analyses of exterior conditions, dramatically reducing the time it takes to complete condition assessment reports. Combined with ourinternational network of inspection data capture partners, T2D2 delivers a complete suite of tools for exterior condition assessment. T2D2 is used on over three continents on commercial real estate, sporting arenas, bridges, and even power plants.Images can be captured using photos or videos from any type of capture device, including drones. The T2D2 web portal allows users to see individual asset or entire portfolio data in one place. Engineers are able to annotate the defects identified by T2D2. Deterioration can be viewed over time as new photos are uploaded. | $1.7M | Seed | Jan 01, 2022 |  |
| Join | Join optimizes product and material selection and usage, based on project's unique characteristics. They provide contractors and manufacturers with clarity to drive industrial execution and empower architects with the deep material expertise of fabricators and manufacturers to drive whole-building performance. |  |  |  |  |

7 of 7 investments shown.

## Co-investors
- [Thornton Tomasetti](https://shizune.co/investors/profile/thornton-tomasetti) — VC Fund, 5 deals together
- [Suffolk Technologies](https://shizune.co/investors/profile/suffolk-construction) — VC Fund, 4 deals together
- [Dysruptek](https://shizune.co/investors/profile/dysruptek) — VC Fund, 3 deals together
- [Insight Partners](https://shizune.co/investors/profile/insight-partners) — VC Fund, 3 deals together
- [AEC Angels](https://shizune.co/investors/profile/aec-angels) — VC Fund, 2 deals together
- [Redpoint](https://shizune.co/investors/profile/redpoint-ventures) — VC Fund, 2 deals together

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does STO Building Group invest in?

STO Building Group invests primarily in Software, SaaS and Construction startups, most often at Seed and Funding Round stage. Most of the 7 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact STO Building Group?

Public channels for STO Building Group include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### Who are the partners at STO Building Group?

The team at STO Building Group includes James K Donaghy (Executive Chairman), Brett Phillips (CFO) and Greg Dunkle (Chief Administrative Officer). The Team section lists each member with their title, investment count and links.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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