| Structural Poles |
| Main arch poles | 18 pcs | 8-10cm dia, ~11.6m length, green (16 + 2 spares) | €0-50 |
| Horizontal ring poles | ~20 pcs | 5-7cm dia, 2-4m length, green | €0-30 |
| Wattle infill poles | ~200 pcs | 3-5cm dia, 1-1.5m length, green — harvest day of weaving | €0-30 |
| Door & window frames | 6 pcs | 10cm dia, 2m length, treated | €0-20 |
| Wind porch corner posts | 4 pcs | 10cm dia, 2.2m length, treated chestnut/pine | €0-15 |
| Porch ridge poles & rafters | 7 pcs | 6-8cm dia, 1.2-2m length (2 ridge, 4 rafters, 1 lintel) | €0-10 |
| Window box frame members | 12 pcs | 5cm × 5cm × 20cm, treated (4 per window × 3 windows) | €0-10 |
| Foundation |
| Gabion mesh | 30 linear m | 3mm wire, 10x10cm openings (includes porch U-extension) | €90-150 |
| Stone fill | 4-5m³ | Local granite or schist, 10-20cm | €0-250 |
| Geotextile fabric | ~30 linear m | Non-woven 150–200 g/m², 160cm wide | €40-70 |
| Perforated drain pipe | ~20m | 100mm HDPE corrugated | €25-40 |
| Drain fittings + outlet pipe | 1 set | 100mm elbow/tee, 3m solid pipe, mesh cap | €15-25 |
| Washed gravel (drainage) | ~0.5m³ | 20mm washed | €20-35 |
| Shell |
| Clay soil | ~3m³ | High clay content | €0-75 |
| Straw | ~15 bales | Standard rectangular | €45-75 |
| Burlap fabric | ~70m² | Natural hessian | €70-140 |
| EPDM membrane | ~75m² | 1.5mm, pond-grade (includes porch roof, sidewalls, window sill flashing) | €450-750 |
| EPDM primer + tape | 1 kit | Seam kit for ~50 linear m of seams | €80-120 |
| Exterior Finish |
| Stone (skirt) | 2-3m³ | Local granite or schist, 10-25cm pieces | €0-200 |
| Hydraulic lime (exterior) | 75kg | NHL 3.5 or NHL 5, for render | €30-45 |
| Sharp sand (exterior) | ~1m³ | Washed, angular, for render | €20-30 |
| Wire mesh (render key) | ~50m² | 25mm galvanized chicken wire | €40-70 |
| EPDM lap sealant | 1 tube | For base flashing and apex collar only | €10-15 |
| Climbing plants | 6-8 pcs | Grape vine, fig, Virginia creeper | €30-60 |
| Interior |
| Hydraulic lime | 150kg | NHL 3.5 or NHL 5 | €60-90 |
| Sharp sand | ~3m³ | Washed, angular | €60-90 |
| Lime putty | 25kg | For finish coat & limewash | €20-30 |
| Treatment & Hardware |
| Borax + boric acid | 15kg total | Technical grade | €20-35 |
| Linseed oil | 10L | Raw, cold-pressed | €50-80 |
| Galvanized wire | 100m | 3mm diameter | €50 |
| Galvanized staples | 500 pcs | 30mm | €15 |
| Polycarbonate sheet | ~1m² | 6mm clear, for windows | €25-40 |