150 €/moisAgency subscription, ex VAT
onshare.be
Sector
Platforms for real estate and development
Mandate sharing between agencies, conversion tools for developers: we build what transaction software does not cover.
- Partage de mandats
- Mensualisation
- Réseaux d'agences
- 2
- Work cited
- 3
- Expertise involved
- 4
- Markets served
- 3
- Languages by default
Proof
The work that proves it
Platforms and sites in production, viewable online. No mockups, no invented clients.
buymonth.be
Two problems market software ignores
The first is cooperation. An agency holds mandates it is not selling, and buyers for properties it does not have. Sharing with a peer means settling in advance who sees what, who contacts the client and how the commission is split. Transaction software manages one agency's stock, not the relationship between agencies.
The second is conversion. A price shown as a capital sum speaks poorly to a private buyer, who thinks in monthly payments. A developer loses enquiries simply because visitors cannot picture themselves there.
What we have built
OnShare is a closed network of verified agencies sharing mandates and buyers. Visibility rules are set by the agency that owns the mandate, each agency gets its own dashboard, and network access costs €150 a month excluding VAT.
BuyMonth addresses developers: badges, widgets and QR codes that turn a sale price into an estimated monthly payment, embeddable online and on site hoardings alike, with enquiry tracking and the option to plug in lending partnerships.
The blocks specific to the sector
Shared mandates
with visibility rules set by the mandate owner
Qualified buyer database
with structured search criteria
Commission split
agreed before the introduction
Agency verification
on joining the network
Embeddable widgets
on a third-party site, with no rebuild
Lending legal notices
compliant with the national framework
What else we build
New-build development sites with interactive floor plans and unit reservation; buyer portals for progress tracking and payment calls; agency sites with a synchronised portfolio; and bespoke rental management tools.
Budget and timeline
A network platform starts at €35,000 and three to five months. A widget-distributable conversion tool starts at €25,000. A development or agency site starts at €9,000.
The technologies used
Those of the work cited on this page. Code only: no WordPress, no Shopify.
- Next.js
- TypeScript
- PostgreSQL
- Stripe
Expertise
The services involved
What we concretely build within this scope.
Business platforms & B2B marketplaces
Platforms connecting two professional populations: verified accounts, gated access, internal messaging and confidentiality by default.
Next.jsPostgreSQLAccès par rôle
Subscription SaaS products
Turning a service into a recurring product: trials, plans, automated payment, failed-payment recovery and a self-service customer area.
StripeAbonnementsMulti-comptes
Bespoke web applications
Internal tools, client portals and line-of-business software that replace shared spreadsheets and software nobody uses.
Next.jsPostgreSQLRôles & permissions
Why us
What sets us apart
Four commitments that hold over time, not four slogans.
100% code, zero proprietary platform
No WordPress, no Shopify, no page builder. Your product is written in TypeScript, documented and version-controlled — the repository is yours from day one, and you are locked in to nobody.
Products, not brochures
User accounts, recurring subscriptions, messaging, gated access, payments: we have shipped five platforms running with real paying customers behind them.
Regulated sectors
Insurance broking, accountancy firms, real estate, financial recruitment. We know the data confidentiality, role-based access and domain constraints these professions carry.
Multilingual by default
FR · EN · ES. Internationalisation is built into the architecture, not bolted on as a plugin six months later — essential in Belgium, Luxembourg and Switzerland.
Method
How a project runs
A detailed quote before we start, and a staging link from week one: you watch the project progress live, not in meetings.
- 01
Scoping
Goals, site structure, content and features. You get a costed scope, line by line.
1 week - 02
Design
Figma mockups of every screen, desktop and mobile, signed off before any development.
2 weeks - 03
Development
Build, back office, content in all three languages. Staging available throughout.
3 to 6 weeks - 04
Launch & support
Testing, redirects, back-office training, then maintenance and monthly improvements.
ongoing
Questions
Frequently asked questions
Can the portfolio be synchronised with our transaction software?
Yes, where the software exposes an API or export feed, which the main vendors do. Failing that, we set up a scheduled file import, with duplicate and withdrawn-property checks.
Does the monthly-payment calculator create liability for us?
That is precisely why the legal notices and the indicative nature of the calculation are handled at design stage, against the applicable national framework. We did this for the Belgian market on BuyMonth, and the same rigour applies elsewhere.
Journal
Further reading
Platforms
What a B2B marketplace costs, and where the budget goes
The six building blocks to plan for, the ones always forgotten, and the real ranges.
Engineering
Why we work with neither WordPress nor Shopify
This is not technical snobbery. It is a question of three-year cost.
Engineering
What a bespoke website really costs
The breakdown line by line, and why a €1,500 quote ends up costing you more.
Let's talk
Got a project? Say hello.
Tell us what you need: within 48 hours you get technical feedback plus a budget and timeline estimate. No commitment.