Architecture, engineering & permits

The idóneos (who signs what)

Foreign design → built via refrendo: a foreign architect's design can be built, but the local idóneo who signs and seals is the only responsible party. Expect a Panamanian architect to charge a ~$1,500 minimum just to translate, adapt to seismic/block code, and stamp (plus separate EL/PL stamps). Sora takeaway: don't pursue foreign idoneidad (very restrictive — only via marriage/child/naturalization + degree reválida); retain local idóneos to refrendar and adapt.

Deliverables & the 3D model

• Anteproyecto (schematic): plans, elevations, a memoria — the feasibility + client-communication stage where the 3D/glb model lives. Registered via the municipal RLA before construction docs. Not buildable from.
• Planos / proyecto de ejecución (buildable set): exact dimensions, full structural + MEP calcs, quantities/budget. Architectural + structural + memoria de cálculo + hydraulic + sanitary + electrical + budget.
• Software: AutoCAD (2D/3D standard), Revit/ArchiCAD (BIM), SketchUp (massing). glb pipeline: source model → export glTF/glb (SketchUp/Blender native; Revit needs an exporter) → WebGL viewer or <model-viewer> embed. The glb belongs at the anteproyecto gate for sign-off — it is a sales/visualization tool, not a regulatory deliverable.
• Code: the structural code is REP-2021 (REP-2014 superseded), referencing ACI 318 / AISC 360 / ASCE 7; the memoria must demonstrate seismic + wind compliance — important near Barú (Boquete/Volcán) and on liquefiable coastal sand.

Soil study (estudio de suelos)

Not a standalone permit but a required input, practically needed for any ground-floor-plus-one-story or sloped/unstable lot (most custom homes). ~US$2,590, ~2–8 weeks (anchor figure, confirm locally). Done by a geotechnical idóneo + lab (Tecnilab, Geolabs, Ingeniería Prego, UTP LABGEO). It produces bearing capacity + the foundation recommendation, and can downgrade an over-cautious pile design to ordinary zapatas, saving real money. Coastal risk: shallow water table, liquefaction, saline corrosion. Highland risk: collapse-prone volcanic soils + slope stability.

Permitting — the gauntlet

Worked example: a B/.80,000 house ≈ B/.800 construction tax + B/.50 cartón + per-sheet + B/.8 timbres ≈ ~B/.908 in municipal charges (excludes professional fees). Does one custom home need an EIA? Usually no on an ordinary titled interior lot — but coastal/island/protected sites (Pedasí, Bocas) are materially more likely to trigger it, the swing factor between a 3-month and a 12-month permit phase.

Coast vs highland — the real difference is land tenure

• Boquete / Volcán / David (Chiriquí): mostly titled, cleaner permitting; David needs a fresh Registro Público cert + Catastro cert, idóneo/JTIA seal, Bomberos + MINSA permits. Volcán is distrito Tierras Altas, a separate alcaldía from David; electricity is EDEMET-EDECHI.
• Pedasí (Los Santos / Azuero): permits via Municipio de Pedasí (fees not confirmed; extrapolated from Los Santos). The 22 m public-domain coastal strip applies.
• Bocas: dominated by ROP and maritime concessions, not title. Over-water builds need land behind + a maritime concession + EIA. Hybrid ROP-land-plus-concession is common — careful legal review required.
• Coastal law everywhere: the 22 m from high tide is public domain and cannot be titled (Ley 44/2006). ROP→title conversion needs proven possession >5 years + an MOP-registered survey, and cannot succeed in protected areas, comarcas, or concession zones.

Inspections, occupancy & property tax

• Inspections + final inspection are by the municipal DOYC, not MIVIOT. Expat consensus: enforcement is light in practice — builder selection matters more than inspection (a Sora value-prop).
• Permiso de Ocupación (occupancy): issued by the municipality, must be requested by the same party who pulled the construction permit (a reason to keep the builder bound to completion). Needs the Bomberos occupancy cert + updated Registro Público cert + builder Paz y Salvo. ~30–45 days.
• Utilities (gated by the occupancy permit): electricity (occupancy copy + connection fee; ≥200A/3-phase/underground need a stamped plan) and water (Carta del Promotor for new property).
• Register the improvement (mejoras) at the Registro Público for property tax; update values at ANATI first. IBI (Ley 66/2017, Vivienda Principal): first $120k exempt, 0.5% to $250k, 0.7% above. The old 20-year exoneration is legacy (permits before 2019 only).

Fees & timeline

Ready to break ground: ~3–7 months on a clean titled/highland lot; far longer where land tenure, environmental review, or coastal concessions are involved. Top delay causes, ranked: (1) land title / ANATI (ROP→title 1–3+ yr — the dominant Pedasí/Bocas risk); (2) plan-correction cycles (~3-month window or the file lapses); (3) environmental review; (4) multi-entity backlog; (5) rainy season — start in the dry season (Dec–Apr). A pre-designed model can cut 6–8 months off design/approval.