MentionFox lists 25 Construction companies for 2026. Of them, 11 are Y Combinator companies (the newest batch here is Summer 2026, with 5); 14 filed a Form D notice with the SEC. Across the 12 Form D notices in the table that report an amount sold, the median is $560,000; the largest is $52.8M, by EarthGrid PBC (its Form D, filed Aug 10, 2026).
Other years
Construction startups in 2026
| Company | What it does | Date | Amount | Round / stage | Record |
|---|---|---|---|---|---|
| Brite Bird LLC | Filed Sep 22, 2026 | $211,853 | SEC Form D | ||
| Ascend Works, LLC (funding history) | Filed Sep 18, 2026 | SEC Form D | |||
| Stirlingshire Investments, Inc. (funding history) | Filed Sep 14, 2026 | SEC Form D | |||
| Streamline Glass, Inc. | Filed Aug 28, 2026 | $620,000 | SEC Form D | ||
| HeavyTech,Inc. | Filed Aug 24, 2026 | $125,000 | SEC Form D | ||
| Modlogiq, Inc. | Filed Aug 14, 2026 | $7.1M | SEC Form D | ||
| EarthGrid PBC | Filed Aug 10, 2026 | $52.8M | SEC Form D | ||
| Kumio Inc. | Filed Jul 1, 2026 | $200,000 | SEC Form D | ||
| Alloovium | The company brain for construction companies | Summer 2026 | Y Combinator batch | Y Combinator listing | |
| Applied Electrodynamics, Inc. | A new kind of camera that can see through walls. | Summer 2026 | Y Combinator batch | Y Combinator listing | |
| Cosmic Robotics | Autonomous construction on Earth and beyond | Summer 2026 | Y Combinator batch | Y Combinator listing | |
| FlowManual | AI for Construction's Back Office | Summer 2026 | Y Combinator batch | Y Combinator listing | |
| SubVysion | Autonomous rovers to make the ‘Google Maps’ of underground utilities | Summer 2026 | Y Combinator batch | Y Combinator listing | |
| Eloo, LLC | Filed May 12, 2026 | $340,000 | SEC Form D | ||
| Konstructiq, Inc. (funding history) | Filed May 1, 2026 | $4.8M | SEC Form D | ||
| PLAN0 AI | Construction Cost Intelligence. | Spring 2026 | Y Combinator batch | Y Combinator listing | |
| Twolabs | Humanoid robot platform for builders. | Spring 2026 | Y Combinator batch | Y Combinator listing | |
| Gearflow Inc. | Filed Mar 31, 2026 | $3.6M | SEC Form D | ||
| Permit Beacon Inc. | Filed Mar 27, 2026 | $300,000 | SEC Form D | ||
| Phoenix Boring Inc. | Filed Feb 18, 2026 | $4.6M | SEC Form D | ||
| Yard Inc. | Filed Feb 13, 2026 | $500,000 | SEC Form D | ||
| AutoSitu | The AI operating system for the built world | Winter 2026 | Y Combinator batch | Y Combinator listing | |
| Envariant | Interpretability and reasoning infra for foundation models. | Winter 2026 | Y Combinator batch | Y Combinator listing | |
| Foreman | Keeping contractors on the job site, not behind a desk. | Winter 2026 | Y Combinator batch | Y Combinator listing | |
| Galactic Resource Utilization Space, Inc. (GRU Space) | Moon Hotel -> The Intergalactic Construction Company of Earth | Winter 2026 | Y Combinator batch | Y Combinator listing |
Selling to these companies?
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Figures come only from the record linked in each row; a blank means the record gives none. How these lists are built.