Software and owner portal for a residential property manager: cost

The verdict in three sentences

A residential property manager running 140 buildings can no longer rely on a bare-bones owner portal: leaseholders and owners now treat it as their first point of contact, and regulators in most European markets expect transparent access to accounts and documents. A custom property management platform connected to accounting, insurance claims and remote voting costs, as a 2026 order of magnitude, EUR 25,000 to 60,000 with a local agency, versus EUR 2 to 4 per unit per month for an off-the-shelf package. The real payoff is staff time: roughly 30% of property manager hours recovered, the equivalent of one full-time role in a team of four.

What owners and regulators now expect from the portal

In France, the ALUR law has required professional managers to offer a secure online portal since 2014, with a 2019 decree listing the minimum documents. In the UK, service charge transparency rules and the Building Safety Act push block managers in the same direction. Whatever the jurisdiction, the expectations converge.

Most packages cover the compliance baseline. What they rarely do well is link accounting, claims and owner communication, which is where most inbound calls come from.

Per-unit package or custom build: the numbers

Take a portfolio of 140 buildings averaging 30 units, about 4,200 units. At EUR 3 per unit per month, a package costs around EUR 151,000 a year. Vendors discount above a few thousand units, but the bill stays high and grows with every new management contract.

At Kolonell, a business application of this size falls in the medium tier, EUR 6,100 to 10,670 (4,000,000 to 7,000,000 FCFA), or the complex tier, EUR 10,670 to 22,870+ (7,000,000 to 15,000,000+ FCFA) once you add a two-way accounting connector and a full claims module. Maintenance plans cost 35,000, 75,000 or 120,000 FCFA per month (EUR 53, 114 or 183). Hosting and specific options are quoted on request.

The three modules that cut inbound calls

Real-time owner ledger. A large share of calls concern a balance, a service charge demand or a year-end adjustment. When the portal reads the accounts directly, the question goes away.

Claims tracking. A water leak involves an owner, a tenant, the building insurer, a loss adjuster and a contractor. A shared timeline with steps and attachments removes phone chasing. Managers commonly estimate that one open claim triggers 6 to 10 exchanges.

Remote voting. An online ballot sent with the meeting notice raises turnout and reduces adjourned meetings. The count flows straight into the minutes.

Mini case study

Sarah, operations director of a block management firm in London, oversees 140 buildings with 8 property managers. Each manager handles about 35 calls a day, 60% of them about balances, claims or meetings.

• Time spent on those calls: 8 managers × 21 calls × 6 minutes = 16.8 hours a day.
• With a portal linked to accounts and claims, a realistic target is halving those calls, so 8.4 hours recovered daily.
• Over 220 working days: 1,848 hours, a little over one full-time equivalent, in line with the 30% of manager time on owner relations.
• At a loaded cost of around EUR 52,000 per manager, the saving exceeds EUR 50,000 a year, against a build budget of EUR 25,000 to 60,000 with a local agency.

Payback lands within twelve to eighteen months, before counting the contracts retained thanks to better service.

FAQ

Can a property manager operate without an owner portal?

In France, only if the general meeting votes against it, which is rare; elsewhere it is quickly becoming a tender requirement. The French 2019 decree alone lists around twenty document categories to publish.

How long does a migration from a package take?

Allow 4 to 6 months for a 4,000-unit portfolio: 2 months of scoping and data migration, then 2 to 4 months of development in two phases. Switch over building by building, outside the AGM season.

Is online remote voting legally robust?

Yes, provided the ballot follows the required format and arrives within the deadline, 3 clear days before the meeting under French rules. The software timestamps every vote and keeps the evidence.

Can we keep our current accounting software?

In most cases, yes. A connector reads entries and balances, usually through a scheduled export or an API, which avoids a full accounting migration.

Where is the data hosted?

In the EU or UK with a GDPR-compliant host, daily backups and an access log. Former owners' contact details are purged according to your retention policy.

Let's scope your project. Send us your unit count, accounting tool and priorities (claims, meetings, owner ledger) for a two-phase scope and a go-live schedule. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.