The verdict in three sentences
A 650-slip marina with 4,000 transient stays a year runs two businesses: highly sought annual contracts and a seasonal transient activity sold by the night. Custom berth and transient management software costs USD 32,000 to 76,000 in 2026 and ships in 4 to 6 months. With online transient booking and resale of slips vacated by absent tenants, a +20% transient revenue target is achievable, while producing the reports the public grantor expects.
What the software must handle in a concession-operated marina
The operator must fill the water and stay accountable. The software connects the dock plan, contracts and billing.
| Module | Features | Users | Tracked indicator |
|---|---|---|---|
| Dock plan | Pier layout, slips by length and beam, real-time status | Harbor office | Occupancy by category |
| Waiting list | Applications, seniority, allocation criteria, offers | Harbor office, grantor | Average waiting time |
| Annual contracts | Contracts, amendments, declared absences, terminations | Admin team | Renewal rate |
| Transients | Online booking, arrivals, departures, slips freed by absent tenants | Dock staff, visiting boaters | Nights sold |
| Billing | Annual fees, transient stays, services, reminders | Accounting | Days to collect |
| Grantor reports | Revenue, occupancy, allocations, concession KPIs | Management, authority | Annual report compliance |
The main lever is reselling temporarily vacant slips. An annual tenant who declares 3 weeks away frees a slip that dock staff can sell to transients instead of leaving it empty.
What marina software costs in 2026
2026 estimates for a marina of 500 to 800 slips. Rate used: 1 EUR ≈ 1.08 USD.
| Scope | Content | Budget | Timeline |
|---|---|---|---|
| Core | Dock plan, annual contracts, billing | USD 32,000 to 43,000 | 4 months |
| Transients | Core + online transient booking, card payment, declared absences | USD 43,000 to 56,000 | 4 to 5 months |
| Concession | Transients + transparent waiting list, grantor reports | USD 56,000 to 67,000 | 5 months |
| Complete | All + dock staff app, boater portal, dashboards | USD 67,000 to 76,000 | 5 to 6 months |
What +20% transient revenue means
Indicative 2026 figures, to adjust with your own rates.
| Assumption | Estimated value |
|---|---|
| Transient stays per year | 4,000 |
| Average stay | 2.5 nights |
| Average revenue per stay | USD 195 |
| Current transient revenue | USD 780,000 |
| Target increase | +20% |
| Additional revenue | USD 156,000 a year |
| Prudent scenario at +10% | USD 78,000 a year |
The increase comes from three measurable sources: absent tenants' slips resold, online booking that captures boaters before they set off, and fewer turned-away stays thanks to visibility on the dock plan.
Mini case study
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Daniel, general manager of a 650-slip marina in Miami operated under a public concession, hosts 4,000 transient stays a year. Tenant absences are reported by phone and only 30% of vacated slips are resold. He picks the Concession scope at USD 63,000, delivered in 5 months. Online absence declaration and transient booking lift resale to 70% and transient revenue from USD 780,000 to USD 900,000 in the first season, i.e. +15%. The project pays back in about 6 months of operation, and the annual grantor report takes 2 days to prepare instead of 2 weeks.
FAQ
Can the waiting list be made transparent for the authority?
Yes, the Concession scope, from USD 56,000, logs every application, its rank and each allocation according to the harbor rules, with an export for the grantor.
Can visiting boaters book and pay online?
Yes, they pick their dates and boat length, pay by card and receive a confirmation. The harbor office still assigns the exact slip.
How do annual tenants declare absences?
Tenants enter their dates from the boater portal. The slip then shows as available for transients, and a marina reselling 70% of those slips instead of 30% nearly doubles that revenue line.
Does the software produce the operator's annual report?
It produces the revenue, occupancy and allocation tables required by the concession agreement. Final formatting stays with you, but gathering the figures drops from several weeks to a few days.
What timeline to be ready for peak season?
With 4 to 6 months of project, starting in the summer allows a go-live in November, ahead of the Florida winter season.
Let's scope your project. Tell us your slip count, transient volume and concession requirements, and we will price a scope between USD 32,000 and 76,000 with a 4 to 6 month plan. 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.
