# FJ Labs' Construction Investments: 10 Startups in Its Portfolio (2026) > The 10 Construction startups FJ Labs has backed, by stage: $129M raised between them. From the rounds we track; updated nightly. Source: https://millionrounds.com/portfolio-maps/fj-labs-construction-portfolio (Millionrounds; every figure on the page links to its filing or article) ## Stage not reported 4 - [SmartBarrel](https://millionrounds.com/company/smartbarrel) - [Flexcavo](https://millionrounds.com/company/flexcavo) - [BuildCasa](https://millionrounds.com/company/buildcasa) - [*T* Tread](https://millionrounds.com/company/tread) ## Series A 4 - [YardLink](https://millionrounds.com/company/yardlink) - [Assembly OSM](https://millionrounds.com/company/assembly-osm) - [Downstream](https://millionrounds.com/company/downstream) - [Heave](https://millionrounds.com/company/heave) ## Pre-seed and seed 2 - [Envizzo](https://millionrounds.com/company/envizzo) - [StruxHub](https://millionrounds.com/company/struxhub) ## Segment by segment ### Stage not reported 4 startups · $26M raised - [**SmartBarrel**](https://millionrounds.com/company/smartbarrel) SmartBarrel is construction time tracking software built for specialty contractors and self-perform GCs who need accurate labor hours. United States $9.9M - [**Flexcavo**](https://millionrounds.com/company/flexcavo) ConTech venture focused on workflow automation for construction companies. Germany $8.0M - [**BuildCasa**](https://millionrounds.com/company/buildcasa) BuildCasa is a California-based real estate development firm founded in 2022 by Ben Bear and Paul Steidl. United States $6.6M - [*T* **Tread**](https://millionrounds.com/company/tread) TREAD is an online fitness startup. Canada $1.1M ### Series A 4 startups · $95M raised - [**YardLink**](https://millionrounds.com/company/yardlink) YardLink is a B2B digital marketplace and supply chain management platform focused on the construction industry. United Kingdom $42M - [**Assembly OSM**](https://millionrounds.com/company/assembly-osm) Assembly OSM delivers architecturally distinctive high-rise buildings through their innovative building systems. United States $38M - [**Downstream**](https://millionrounds.com/company/downstream) Downstream is an enterprise-ready software solution that helps large brands and agencies automate and optimize their advertising campaigns. United States $8.0M - [**Heave**](https://millionrounds.com/company/heave) Heave is a convenient equipment sourcing platform offering heavy machinery equipment sales and rentals from suppliers in the industry. United States $7.0M ### Pre-seed and seed 2 startups · $8.5M raised - [**Envizzo**](https://millionrounds.com/company/envizzo) Envizzo is a New York-based online marketplace and full-service platform founded in 2016. United States $4.5M - [**StruxHub**](https://millionrounds.com/company/struxhub) StruxHub is a construction technology startup that offers an all-in-one site operations platform designed to enhance construction United States $4.0M **How this map is made.** Every startup here works in Construction and has raised money in a round we track that names FJ Labs as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026. ## More portfolio maps [All portfolios](https://millionrounds.com/portfolio-maps) [Sector portfolio **FJ Labs' Fintech portfolio** 88 startups · $7.1B](https://millionrounds.com/portfolio-maps/fj-labs-fintech-portfolio)[Sector portfolio **FJ Labs' AI portfolio** 72 startups · $3.2B](https://millionrounds.com/portfolio-maps/fj-labs-ai-portfolio)[Sector portfolio **FJ Labs' E-commerce portfolio** 34 startups · $1.7B](https://millionrounds.com/portfolio-maps/fj-labs-e-commerce-portfolio)[Sector portfolio **FJ Labs' Web3 & Crypto portfolio** 25 startups · $2.5B](https://millionrounds.com/portfolio-maps/fj-labs-web3-crypto-portfolio)[Sector portfolio **FJ Labs' Consumer Apps portfolio** 20 startups · $420M](https://millionrounds.com/portfolio-maps/fj-labs-consumer-apps-portfolio)[Sector portfolio **FJ Labs' Logistics portfolio** 20 startups · $976M](https://millionrounds.com/portfolio-maps/fj-labs-logistics-portfolio) ## Raising from investors like FJ Labs? Find the investors who back startups like yours, with their cheques, rounds and partners, in the app with filters, lists and exports. [Find investors](https://millionrounds.com/login?join=1&next=/app/investors)[Market maps](https://millionrounds.com/market-maps)