# Summer

> Summer is a New York proptech company that builds SummerOS, asset-management software for short-term rental operators. After starting as an asset-heavy 'own a vacation home without the risk' model, the Airbnb-alumni team pivoted to SaaS, crunching market data and a property's own performance to tell operators exactly what to fix, raise, or rethink. It aims to bring professional-grade, data-driven tools - long standard in commercial real estate - to the fragmented $125B short-term rental market.

- **Founded:** 2021
- **Headquarters:** New York, United States
- **Founders:** Paul Kromidas (Founder & CEO)
- **Team size:** ~190 employees (Apollo estimate; likely smaller after SaaS pivot)
- **Products:** SummerOS, Summer Forecast, Performance Monitoring
- **Notable:** Raised a combined $68M (Series A plus debt facility) in November 2023, Built and shipped SummerOS, billed as the first asset-management platform purpose-built for short-term rentals, Successfully pivoted from a capital-intensive ownership model to scalable SaaS

## Products & services

- **SummerOS** — Asset-management software for short-term rental operators that crunches data across US markets and submarkets, compares it to a property's actual performance, and surfaces actions to optimize revenue. Priced from roughly $15 per home per month with enterprise tiers.
- **Summer Forecast** — A free analysis tool that evaluates a potential short-term rental investment and forecasts rental revenue before you buy.
- **Performance Monitoring** — Predictive analytics and automated alerts that flag underperformance, pricing gaps, and demand spikes before they cost money.

## Achievements

- Raised a combined $68M (Series A plus debt facility) in November 2023
- Built and shipped SummerOS, billed as the first asset-management platform purpose-built for short-term rentals
- Successfully pivoted from a capital-intensive ownership model to scalable SaaS
- Sold its owned-home portfolio to Portoro while retaining the software relationship

## Latest updates

- **2025-03** — Launched SummerOS publicly, repositioning the company as a SaaS asset-management platform for STR operators.
- **2024-11** — Completed the pivot away from the asset-heavy ownership model; Portoro acquired Summer's owned properties.
- **2023-11** — Announced a combined $68M - an $18M Series A led by QED and Viola FinTech plus a $50M debt facility from Setpoint Capital.

## Links

- Website: https://summeros.com
- LinkedIn: http://www.linkedin.com/company/summer-inc
- Twitter/X: https://twitter.com/startsummering
- Facebook: https://facebook.com/startsummering

---

Profile page: https://yespress.io/summer
Published by YesPress — https://yespress.io
Last updated: 2026-06-06