Supa Raises £21M Seed Round to Grow AI Block Management Platform

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London proptech company Supa has raised £21 million (about $27 million) in seed funding to expand its AI platform for residential block management and to keep buying local property management firms. The round was announced on 4 November 2026.

The equity round was co-led by 2150 and OpenOcean, with KOMPAS VC, Actia Capital Partners and HEARTFELT also taking part. Supa has also secured a debt facility from a major UK lender. Neither the lender nor the size of the facility has been disclosed.

Deal summary


Company	Supa
Headquarters	London, UK
Sector	Proptech
Round	Seed
Amount	£21M (about $27M)
Co-leads	2150, OpenOcean
Other investors	KOMPAS VC, Actia Capital Partners, HEARTFELT
Debt	Facility from an unnamed UK lender, amount not disclosed
Announced	4 November 2026

What Supa does

Block management is the day-to-day running of residential buildings, usually blocks of flats. It covers arranging repairs, collecting and reconciling service charges, keeping fire and safety compliance records, and coordinating contractors. Much of that work is still done by hand, with spreadsheets, email chains and phone calls.

Supa's software automates large parts of that admin. The company says it can cut the time property managers spend on administrative tasks by up to 90%. The aim, in Supa's words, is to free managers to spend more time in the buildings they look after and less time behind a desk.

Buying firms instead of selling to them

Most property software companies sell subscriptions to managing agents. Supa takes a different route. It acquires established local block management firms and moves their operations onto its own platform.

The acquired firms keep their names, their local teams and their relationships with residents. Supa supplies the technology and central support behind them. The idea is that residents keep dealing with the same local team, while Supa's system handles the paperwork behind the scenes.

This approach, often called "buy and build," is common in fragmented service industries such as accounting, veterinary care and insurance broking. It is less common in UK block management, where the market is made up of many small independent firms.

Growth so far

Supa made its first two acquisitions in late 2025. It now owns seven firms, including Hunters in Sussex, FW Block Management in Hertfordshire and Lamberts in London. Together, the group manages about 20,000 homes.

The company says revenue has grown by more than 700% since those first two deals. It has not published absolute revenue figures, so the size of the business behind that growth rate is not public.

Who backed the round

The two co-leads come from different corners of the venture market.

2150 invests in technology for cities and the built environment, with a focus on cutting emissions. Its Urban Sustainability Technology Fund closed at $312 million in 2021, according to TechCrunch.
OpenOcean backs early-stage B2B software and data companies building on AI, typically at seed or Series A. It has offices in London and Helsinki, and in 2025 was targeting a €130 million final close for its fourth fund.

Together, the pairing reflects the two sides of Supa's pitch: the built environment and AI software.

The market Supa is targeting

The numbers behind UK leasehold show why block management is a large, if quiet, market.

England has about 4.9 million leasehold homes, roughly 20% of all housing. About 3.38 million of them are flats, according to government estimates for 2024 to 2025.
88% of leaseholders in flats pay a service charge, according to the English Housing Survey for 2023 to 2024.
For flats, the average service charge was £1,857 a year (median £1,500).
62% of leaseholders who pay a service charge said it was too high. Only 34% said it was fair.

Those figures point to the tension Supa says it wants to address: residents paying more each year, and small managing agents struggling with growing workloads. Many firms in the sector have fewer than ten employees.

Regulation on the horizon

Block management is also facing closer scrutiny from government. In July 2025, the UK government opened a consultation on strengthening protections for leaseholders over charges and services. It closed in September 2025.

The proposals include minimum professional qualifications for managing agents, standardised service charge demands with set cost headings, annual reports for leaseholders, and written service charge accounts within six months of the year end for buildings with four or more homes.

If these rules are brought in, managing agents will face more reporting and compliance work. That is the kind of admin Supa's software is built to handle, although the final shape and timing of the rules have not been confirmed.

What the company said

"We keep the local firms, take the admin off their desks, and put managers back inside buildings," said Calum Brannan, co-founder and CEO of Supa.

Brannan also said residents are facing rising service charges without seeing a matching improvement in service quality.

What to watch next

Supa has said the new money will go into developing its platform and making further acquisitions. Several details are still open:

Pace of acquisitions. Supa went from two firms to seven in about a year. It has not said how many more it plans to buy, or over what period.
The debt facility. The lender and the amount have not been named. It is not clear how much of future deals it will fund.
Financial performance. The 700% growth figure comes without a starting point. Absolute revenue or profit numbers would give a clearer picture.
Regulation. New rules on managing agents and service charges could reshape the sector over the next few years.