Here's a complete HTML page with the estimated fee table. Since seasteads don't exist as a recognized vessel class anywhere yet, my working assumption throughout is that authorities would initially treat it like a **~45 ft private vessel** (cruising permit + mooring/seabed-use fees), and humans fall under existing tourist/digital-nomad visa regimes. All figures are educated guesses in USD. ```html Seastead Tension-Leg Anchoring & Residency Fee Estimates

Estimated Fees: Family Seastead — Tension-Leg Anchoring + 2 People

Speculative estimates (USD) for a ~44 ft triangular seastead with helical-screw tension legs, treated by authorities as a ~45 ft private vessel. Two adult occupants.

Important: No jurisdiction currently has a fee category for seasteads or seabed-tensioned private platforms. These figures extrapolate from existing cruising permits, marine-park/mooring fees, seabed-lease precedents, and digital-nomad visa programs. Actual fees could be substantially higher if a seastead is classified as a structure rather than a vessel (triggering seabed leases, planning permission, or property taxes), or lower if treated simply as an anchored boat. Verify locally before committing.
Country / Territory Tension-Leg Anchoring Fees1 Human / Digital-Nomad Fees (2 people) Combined Total Notes / Basis of Estimate
1 Week1 Month3 Months6 Months 1 Week1 Month3 Months6 Months 1 Week1 Month3 Months6 Months
Bahamas $300$300$350$400 $60$60$120$180 $360$360$470$580 Flat cruising permit (~$300) covers a year incl. re-entries; guess adds modest "special mooring" surcharge. No DN visa; BEATS program not applicable to self-employed. Departure tax ~$29/pp; assume one 90-day extension for 6-mo stay.
Belize $75$150$250$400 $0$25$100$600 $75$175$350$1,000 Cruising permit ~$100/6 mo + guessed reef/seabed fee. "Work Where You Play" DN visa est. ~$500–600 for 6 months. Tourist entry 30 days, ~$25/mo extensions after.
Panama (Caribbean) $300$450$800$1,200 $40$80$200$1,700 $340$530$1,000$2,900 Panama historically expensive for foreign yachts (temp. importation + cruising permit, est. $1,000–1,500/yr). Guna Yala comarca fees ~$20/pp if in San Blas. Remote-worker short-stay visa: ~$300 govt fee + legal costs, est. $1,500–1,700 for two.
Grenada $100$200$300$500 $0$0$0$2,000 $100$200$300$2,500 Cruising permit scaled by LOA, est. $200–300/quarter. Official 12-mo digital-nomad visa est. ~$1,500 pp / ~$2,000 couple — assumed needed only for the 6-mo scenario. 90 days visa-free otherwise.
Turks & Caicos $150$300$450$900 $0$0$150$400 $150$300$600$1,300 Cruising permit ~$300/quarter, renewable. No formal DN visa; paid visitor extensions assumed (~$150–200 per extension). Marine-park mooring-style fee guessed for tension legs.
Antigua & Barbuda $125$250$250$500 $0$0$0$2,000 $125$250$250$2,500 Cruising permit by length, est. ~$250/quarter. Nomad Digital Residence (NDR): ~$1,500 single / ~$2,000 family, 2-yr validity — charged once at 6-mo scenario. Very cruiser-friendly otherwise.
Anguilla $100$200$400$700 $0$0$0$3,000 $100$200$400$3,700 Modest cruising permit (~$100–200). "Beyond Ordinary" DN visa premium-priced: est. ~$2,000 pp / ~$3,000 couple for 12 months. Small territory, likely case-by-case handling of a seastead.
British Virgin Islands $90$175$350$700 $0$0$100$300 $90$175$450$1,000 Cruising permit ~$175/quarter (under 60 ft). National Parks Trust may charge for any fixed seabed gear. No DN visa; visitor extensions cheap but work rights limited.
French Polynesia $100$200$200$600 $0$0$0$400 $100$200$200$1,000 Cruising permit ~$200/90 days; 6-mo stay requires long-stay visa (~$150–200 pp) + possible bond. Seabed occupation in a French overseas collectivity could trigger maritime-domain permitting — flagged as risk.
Thailand (Andaman/Gulf) $50$100$200$400 $0$0$560$620 $50$100$760$1,020 Low official yacht-in fees; anchoring mostly free outside marinas. Destination Thailand Visa (DTV): ~$280 pp, 5-yr validity, 180-day stays — buy once at 3-mo mark. 90-day reporting + 7-day arrival reporting apply.
Cayman Islands $65$130$260$520 $0$0$0$2,000 $65$130$260$2,520 Cruising permit ~CI$100–150/quarter. Global Citizen Concierge DN visa est. ~$1,469 pp / ~$2,000 couple (2-yr). Wealthy jurisdiction — seabed licensing could be strict; medium-high uncertainty.
Malaysia (Langkawi) $25$50$100$200 $0$0$430$430 $25$50$530$630 Cheapest option. Duty-free port, minimal yacht-in fees, anchoring tolerated. DE Rantau DN pass ~RM1,000 (~$215) pp/yr = ~$430 for two. 90-day visa-free for many nationalities anyway.

Key Assumptions

``` A few observations worth flagging for your planning: 1. **Classification risk dominates everything.** The single biggest cost variable isn't the country — it's whether officials call your seastead a *boat* (cheap, familiar paperwork) or a *structure* (seabed lease, planning permission, potentially property-style taxation). Panama and French Polynesia are the most likely to take the strict view; Langkawi and Thailand the most relaxed. 2. **Tension legs cut both ways.** Leaving helical screws in the seabed makes you more "permanent" than an anchored yacht, which is why I added a guessed seabed-occupancy component everywhere. If you pull the screws and drift/swing when not parked, you could likely pay plain cruising-permit rates in several of these places. 3. **DN visa timing matters.** Several Caribbean DN visas (Grenada, Antigua, Anguilla, Cayman) are 12-month or 2-year products priced for individuals vs. couples — worth buying once and hopping between them rather than paying twice. Want me to add a second table showing the same data normalized per-day, or a version with low/high ranges instead of point estimates?