The verdict in three sentences
For a Dublin construction SME, a custom project management platform costs between 35,000 and 90,000 EUR depending on scope, versus 15 to 45 EUR/user/month for market SaaS. Custom wins when your processes (time tracking, site reports, cost allocation, snagging) are too specific for a generic tool, or when reliable offline mode on site is critical. Budget 4 to 6 months of development, with ROI driven by fewer cost overruns and the end of double data entry.
What a modern construction tool covers
A strong construction platform centralises multi-site scheduling, crew time tracking, daily reports, geotagged photos, snagging lists and real-time cost allocation. The 2026 priority: a dependable offline mode, because network coverage is still poor on many sites, with automatic sync as soon as the device is back online.
| Module | Custom (included) | Generic SaaS |
|---|---|---|
| Multi-site scheduling | Fits your phases | Standardised |
| Mobile time tracking | Yes, offline | Often an add-on |
| Daily reports + photos | Tailored | Fixed templates |
| Cost allocation | Wired to your accounting | CSV export |
| Snagging / defect tracking | Custom workflow | Basic |
| Code ownership | 100% yours | None |
Custom vs SaaS: the real math
SaaS looks cheaper upfront, but cost climbs with user count and paid modules. Over 3 years, a team of 20 site managers and foremen can spend as much on subscriptions as an amortised dedicated build.
| Scenario (20 users) | Custom | SaaS 30 EUR/user/month |
|---|---|---|
| Upfront investment | 55,000 EUR | 0 EUR |
| Monthly cost | ~600 EUR (hosting + maintenance) | 600 EUR |
| Recurring annual cost | ~7,200 EUR | 7,200 EUR |
| 3-year total | ~76,600 EUR | ~21,600 EUR |
| Ownership + extensibility | Full | None |
| Rollout time | 4-6 months | 2-6 weeks |
SaaS wins on raw 3-year cost; custom wins the moment you need proprietary workflows, deep integrations (accounting, ERP, equipment) and full independence from a vendor.
Mini case study
Aoife, owner of a structural works SME in Dublin (18 staff, 6 concurrent sites), lost around 12 hours a week re-keying paper time sheets and reports, and carried 4% undetected overruns on a 3.2M EUR site turnover, i.e. ~128,000 EUR/year. With a custom tool at 58,000 EUR, she cuts overruns to 2% (~64,000 EUR/year saved) and removes 10 hours/week of re-entry (~26,000 EUR/year of admin time). Payback in under 9 months.
FAQ
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How much does custom construction PM software cost in 2026?
Between 35,000 and 90,000 EUR depending on modules (scheduling, time tracking, costs, photos, offline). A useful first scope sits around 40,000 to 55,000 EUR.
Is offline mode really reliable on site?
Yes, with an architecture built for it: data is stored locally on the device and synced once the network returns. This is where custom often beats generic SaaS.
How long until the tool is live?
Around 4 to 6 months from scoping to field rollout, with a first usable version (scheduling + time tracking) deliverable in 8 to 10 weeks.
Can it connect to our accounting?
Yes, cost allocation can be linked to your accounting software or ERP via API or automated export, removing double entry.
Do field crews need training?
Half a day is usually enough for mobile time tracking and reports; the interface is designed for fast, gloves-on use in a site environment.
Let's scope your project. Tell us your scope (sites, users, offline needs, accounting integration) for an indicative budget of 35,000-90,000 EUR. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
