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Custom software for construction & site.

Construction combines field mobility, tight margins and regulatory constraints (certificates, compliance, hardship). Off-the-shelf software is either too generic or too rigid for each company's specifics.

Soumeoby SwoftProduct

Win more construction tenders.

The tender response copilot: it reads the tender file, prices the job and drafts the technical memorandum in your voice.

Discover Soumeo
01What we solve

Three recurring problems.
The same in most firms.

Before talking software, we talk pain points. If you don't recognize any of these three, we are probably not the right partner for you.

  • 01

    Site hours never make it back to payroll

    Time tracking is on paper, entered three times (site, payroll, billing) with systemic errors. Overtime, meal allowances and travel don't follow. Site managers spend Monday rebuilding the week.

    1 day per week lost rebuilding hours

  • 02

    Your quotes are too slow, you lose contracts

    48-72h to issue a quote while competitors answer in 24h. Amendments are managed in Word, versions are lost, the client disputes. Margin melts between quote and final invoice.

    1 site in 5 lost due to quoting delay

  • 03

    Per-site margin is invisible

    You know whether the year overall is good, not whether THIS site is. Impossible to identify which site types lose you money, hence impossible to stop bidding on them.

    20-30% of loss-making sites undetected

02Complex or critical software

The systems that
cannot fail.

When your processes require a replayable audit trail, sagas with compensation, or compliance by construction, we ship an event-driven architecture (DDD + CQRS + Event Sourcing), not a CRUD layered with audit logs.

  • End-to-end CSR / CSRD reporting with traceability

    End-to-end CSR / CSRD reporting with traceability

    For mid-cap construction companies subject to CSRD: every material consumption, kWh and tonne of CO₂ flowing back from the site is recorded as an inalterable fact. ESRS E1-E5 reporting is reconstructed on demand, with no after-the-fact entry, directly auditable by your statutory auditor.

    ESRSCarbon FootprintADEME
  • End-to-end subcontracting ERP

    End-to-end subcontracting ERP

    Full cycle Quote → Subcontracting → Work acceptance → Customer billing → Subcontractor payment, with clean automatic recovery on snag rejection or guarantee retention. No link can be forgotten, no payment stays orphaned.

    Chorus ProSageBTP Banque
  • 10-year decennial memory replayable

    10-year decennial memory replayable

    Every technical decision on a site (material choice, amendment modification, stage validation) is kept for 10 years in tamper-proof form. In case of decennial damage, exact reconstruction of history at the date of incident, evidence admissible to the insurance expert.

    Decennial liabilityDGCCRF
  • REP PMCB and Building Information Booklet

    REP PMCB and Building Information Booklet

    Mandatory tracking of incoming and outgoing materials per site with dematerialized waste-tracking slips (Trackdéchets), Building Information Booklet (CIL) constituted at delivery and fed for 10 years, automatic generation of REP construction eco-contributions. REP PMCB and CIL compliant by construction, avoids CITEO sanctions and reception blocks.

    TrackdéchetsEcominéroValobatCITEO
03Mobile and web applications

The day-to-day apps,
screen by screen.

For everything else (CRM, portals, scheduling, billing), we ship a custom application, on your design system and with your existing integrations.

  • Mobile site time tracking

    Mobile site time tracking

    10-second time entry from the foreman's phone: who, where, what. Geolocation to verify on-site presence. Overtime, meal allowances, travel automatically detected and sent to payroll.

    Sage PaiePayFitCegid PaieSilae
  • Quotes with amendment revisions

    Quotes with amendment revisions

    Pricing-element library, 30-minute quote generation, electronic signature. Each amendment is a new tracked version, with unit-price and margin history.

    SageYousignDocuSign
  • After-sales and snag list

    After-sales and snag list

    Photos from the site, geolocation, assignment to a worker, snag-resolution time tracking. The customer signs snag closure from their phone, no commercial visit needed.

    WhatsAppYousign
  • Multi-site planning

    Multi-site planning

    Per-site Gantt view, per-worker team scheduling, equipment availability management. Conflicts auto-detected (one person on two sites, a lift booked twice).

    OutlookGoogle Calendar
04Regulations & integrations

What we handle natively,
no add-ons.

Business compliance and key integrations are not options, they are prerequisites built in from the start.

  • DSN

    Monthly nominative social declaration

  • URSSAF / CIBTP

    Social contributions and construction paid-leave fund

  • Carte BTP

    Mandatory professional ID

  • Chorus Pro

    Mandatory B2G electronic invoicing

  • C2P hardship

    Professional prevention account

  • Decennial & professional liability

    Tracking mandatory insurance

05Frequently asked questions

Answers to the questions we get in meetings.

My teams are on site, does the app work without network?
Yes. Time tracking and photo capture work offline, with automatic sync as soon as the phone regains network. No blocking in dead zones.
We already use Sage / Cegid for payroll, do you replace it?
No. We sync with Sage Paie or Cegid Paie. The construction app handles time tracking and site tracking, payroll stays where it is. Bidirectional sync, no double entry.
How long to roll out?
A baseline application (time tracking + quotes + planning) is delivered in 4-6 weeks. Payroll sync and migration of in-flight sites takes 2 more weeks.
My workers aren't tech-savvy. Will they really use it?
That's our #1 requirement on these projects. 10-second time entry, big buttons, few menus. Validated on firms of 5 to 50 workers: > 90% adoption after the first week.
And amendments mid-site, how are they handled?
Each amendment is a new version of the quote with its own margin tracking. The customer signs the amendment from their phone, the site automatically switches to 'modified' with target-margin recalculation.
06Related industries

Mixed firms (accounting + audit, accounting + advisory, accounting + legal) draw from several industries. Here are those that share the most challenges.

07Articles & veille

L'actualité Construction & Site, décryptée.

Réglementations, virages business, sous-domaines en mutation : ce que notre pôle veille publie sur le secteur Construction & Site.

Glossaire connexe

Le cadre réglementaire qui structure Construction & Site.

Les réglementations qui pèsent sur les choix logiciels (appliquées, partielles, ou imminentes), décryptées par notre pôle veille.

  • EU Deforestation Regulation, Règlement (UE) 2023/1115
    Imminent

    EUDR

    EU Deforestation Regulation, Règlement (UE) 2023/1115

    Règlement européen interdisant l'import et la mise sur le marché de produits issus de la déforestation. Applicable aux PME le 30 juin 2026.

    • Retail & Distribution
    • Restaurants
    • Construction & Site
  • Facturation électronique B2B obligatoire en France
    Imminent

    Factur-X / PDP

    Facturation électronique B2B obligatoire en France

    Réforme française de la facturation électronique B2B. Réception au 1er septembre 2026 pour toutes les entreprises ; émission progressive 2026-2027.

    • Accounting firm
    • Construction & Site
    • Light Industry
    • +1
  • Réglementation Environnementale 2020
    In force

    RE2020

    Réglementation Environnementale 2020

    Réglementation française des bâtiments neufs : performance énergétique + carbone. Seuils Ic Construction durcis en 2025 et 2028.

    • Construction & Site
    • Architecture
    • Real Estate

A construction firm wanting to industrialize?
30 minutes, no sales pitch.

30 minutes to scope your need, identify the link with your payroll (Sage, Cegid, Silae, PayFit) and price the project.