Construction Tech Startups

SIGMA manufactures water infrastructure products including fittings, restraints, castings, and enclosures for municipal and utility applications.

1 investor

SignOnSite is construction safety software that lets site workers complete inductions, safety forms, and daily briefings from their phones, while giving managers digital tracking of compliance, project document archives, and automated safety reporting. It serves construction companies and site/safety teams looking to replace paper-based safety processes.

1 investor

SILA is a real estate services and development platform in India that provides facility management, material handling solutions, real estate advisory, and property development services. The company operates across facility management (450+ million sq. ft. assets under management), development advisory (₹25,000 crore in deals advised), and construction services, serving over 280+ clients with a team of 60,000+ skilled professionals.

1 investor

Turnkey offsite framing solutions for multifamily and single-family residential projects.

1 investor

SIRATI provides consulting services in geotechnical engineering, engineering geology, environmental and hydrogeology for public and private sector clients across infrastructure, construction, and environmental projects. The firm delivers expertise in planning, design, and construction support for pipelines, tunnels, buildings, transportation systems, dams, water treatment facilities, and other civil infrastructure.

1 investor

Sirken operates a network of self-service hubs in Norway where quality-checked new and used building materials, as well as office furniture, are sold for pickup. It lets consumers and business customers buy reused construction materials and lets sellers drop off surplus materials for resale, tracking CO₂ savings through a rewards point system.

1 investor

SiteFuel provides on-site fuel delivery and fuel management services for large construction projects, including data center builds, temporary power generators, and fleet fueling. It serves mega construction, industrial, and logistics fleet operations across the United States, combining project management with a technology platform.

1 investor

SiteHive builds hardware devices and cloud software for real-time environmental monitoring of noise, dust, vibration, water, and weather on project sites. Its system combines automated monitoring devices with AI-classified images and audio to help teams track and manage environmental impact.

1 investor

Sitelink is a mobile BIM viewer toolkit for construction field teams, using AR overlay, indoor positioning, and LiDAR 3D capture to align building models with as-built site conditions for QA/QC and trade coordination. It lets crews capture georeferenced issues, scans, and photos and sync them to project management systems like Procore, Autodesk Construction Cloud, and Revizto, serving projects such as datacenters, hospitals, and infrastructure megaprojects.

1 investor

SitelogIQ helps organizations modernize buildings to improve energy efficiency, health, sustainability, and productivity while reducing carbon emissions. The company works across schools, hospitals, apartments, offices, factories, warehouses, and retail centers to deliver facility solutions.

1 investor

Sitepace offers AI-powered CCTV monitoring for construction and industrial sites, detecting safety violations, PPE non-compliance, and unauthorized zone access in real time. The platform provides automated alerts, worker movement tracking, and analytics for site operations and compliance documentation.

1 investor

SiteRecon provides AI-based remote property takeoff measurements, generating square footage, linear feet, and multi-layer service maps from aerial and satellite imagery. It serves landscaping, snow removal, and outdoor service contractors bidding on residential, commercial, HOA, and multi-site properties.

1 investor

Six&Kane is a restored 1897 building in Kane, Pennsylvania that was redeveloped into what it describes as North America's first Passive House EnerPHit Plus office building, featuring on-site electricity generation and high-performance building materials. Located at the gateway of the Allegheny National Forest in the PA Wilds region, it is positioned as a high-performance office and gathering space.

1 investor

SixAxis manufactures fall protection equipment, loading racks, and access ramps for industrial and commercial customers across vertical markets including food & beverage, chemical, and aerospace & defense. The company produces American-made products under the SafeRack, ErectAStep, and Upside Innovations brand families.

1 investor

Sixpenny provides custom metal fabrication and architectural metalwork services for architects, artists, designers, and developers, using both digital fabrication techniques and traditional methods to deliver precision-engineered components and installations.

1 investor

Skema converts schematic architectural designs into coordinated, native Revit BIM models, letting firms capture reusable design assemblies and iterate layouts in-browser with bi-directional sync. It serves architecture, engineering, and construction (AEC) teams across sectors including retail, residential, healthcare, hospitality, education, and data centers.

1 investor

Skilpod manufactures modular residential housing units that can be configured as single dwellings, small developments, or large-scale apartment complexes for individual and institutional investors seeking to address housing shortages.

1 investor

Skyeer IT is a platform for construction and infrastructure monitoring that compares actual site conditions against CAD designs, automatically measures earthwork volumes, and generates detailed digital terrain models with sub-centimeter precision. The platform integrates with drone systems, surveying equipment, and enterprise IT systems to track project progress and detect deviations in real time.

1 investor

VELUX manufactures skylight systems that open and close to provide daylight and fresh air ventilation for residential homes.

1 investor

Slade is a multi-disciplined construction and program management firm offering general contracting, environmental services, construction material testing, geotechnical services, and urban planning. It serves public and private sector clients including federal agencies, state and local government, healthcare, education, industrial, and real estate development organizations.

1 investor

Slate Technologies builds an AI-powered project intelligence platform for the architecture, engineering, and construction (AEC) industry, unifying data from tools like Procore, Autodesk, BIM, and ERP systems to deliver predictive insights. Its platform aims to reduce rework, mitigate risk, and protect project ROI by turning a company's own project data into a lessons-learned knowledge base.

1 investor

Slidedrain makes a SINTEF-approved modular floor drain system for wet rooms, including drain pots, adjustable drain tops, and 25+ tile-insert drain channels and grates. It is aimed at plumbers, project managers, and bathroom builders in Norway, with products designed and manufactured in Norway.

1 investor

SLK Aarhus A/S is a Danish construction and development company that partners early in projects to design and build residential and mixed-use buildings such as row houses and apartment blocks. It emphasizes cost transparency and sustainable construction.

1 investor

Smart is a Japanese demolition and dismantling specialist that handles plant, building, foundation, and pile-extraction work, along with soil contamination treatment, hazardous-material processing, site clearing, and the purchase of idle equipment and valuable materials. It positions itself as a partner for business restructuring and environmental-focused projects.

1 investor