ECHO

Projects / ECHO 20.8

ECHO 20.8

Project from 490 €House kit from 22 120 €

One room for two: sleeping area, lounge with kitchen and a shower room behind a fully glazed façade and a glass gable.

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01 — Free 3D · inside the walls

Frame and every service in 3D

The real project model: load-bearing frame, water, drainage, wiring, sensors, underfloor heating, heat pump and ventilation. Tick layers on and off, cut the house by height, look through the finishes. No dimensions, levels or specifications — they come with the project.

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02 — Layout

Floor plan and rooms

ECHO 20.8 floor plan with numbered rooms
Plan from the architectural project. Room numbers match the schedule. Furniture is not part of the house kit.
№RoomArea
1Living room (sleeping, kitchen)14.7
2Shower room / WC2.9
3Technical compartment0.7
Total net, heated18.3
Net floor area18.3 m²
BedroomsStudio
Shower rooms1
Overall size7.0 × 3.7 m
Footprint26.1 m²
Clear height2.52 m
Architectural project — 490 €Prices & ordering Book a video call — Europe & UK
03 — Prices

What you can order

Choose the version of the house

Prices update below
LayoutThe same house can be built as drawn or as a mirror image — free of charge.

Prices of the kit and of the turnkey house change with the version and the options. All prices excl. VAT.

The house

House kitFloor, wall and ceiling panels, roof covering, aluminium composite façade, glass units, windows and doors. Not insulated, not assembled.
What's included

Structural frame

  • Floor, wall and roof panels made at our factory: joists 45×145 mm and studs 45×95 mm, strength-graded timber C24 (EN 338), kiln-dried and planed
  • Floor, wall and roof panels made at our factory: joists 45×195 mm and studs 45×145 mm, strength-graded timber C24 (EN 338), kiln-dried and planed
  • Floor, wall and roof panels made at our factory: floor joists 45×245 mm and studs 45×195 mm in strength-graded timber C24 (EN 338), roof rafters in LVL 45×260 mm
  • Plates, edge beams and the beam over the glazing in LVL — laminated veneer lumber (EN 14374)
  • Sleepers 3 × 45×145 C24 under the house, preservative-treated for outdoor use (EN 351, use class 3)
  • Bracing walls in 12 mm structural plywood with hold-down anchors to the piles; steel embedded plates hot-dip galvanised
  • Structure designed to EN 1990, EN 1991 and EN 1995 (Eurocodes) with snow and wind checked for each country; design working life 50 years

Sheathing and roof

  • OSB/3 boards (EN 300): 12 mm on the walls, the ceiling and under the floor, 22 mm tongue-and-groove on the floor and the roof deck
  • Breather membrane and tapered battens forming the roof fall
  • Roof membrane EPDM 1.4 mm — synthetic rubber laid in one piece without seams; outlet with the downpipe hidden in the corner column

Façade

  • Aluminium composite panels 5 mm with a fire-retardant mineral core, matt black PVDF finish, fire class B-s1,d0 (EN 13501-1)
  • Boxes, columns and wall cassettes fabricated at the factory, ventilated behind

Glazing, door and windows

  • Double insulating glass units: two toughened panes (EN 12150), one argon-filled cavity, clear glass with low-E coating (EN 1279); mirror glass — option
  • Triple insulating glass units 52 mm (8 – 16 – 6 – 16 – 6), every pane toughened (EN 12150), argon-filled, clear glass with low-E coating (EN 1279); mirror glass — option
  • Glass units structurally bonded to the frame with certified structural silicone (EAD 090020 / ETAG 002) — no frames outside
  • Ug about 1.1 W/m²K
  • Ug about 0.6 W/m²K
  • Entrance door: aluminium profile with thermal break, glazed, concealed hinges, Ud ≤ 1.2 W/m²K
  • Windows: aluminium with thermal break, tilt-and-turn, black handles
  • Underfloor heating in every room: heating cable in 20 mm grooved boards, a thermostat in every room

Delivered with

  • All fixings, tapes, sealants and anchors to the piles; every part marked and numbered to the assembly drawings

Not included

  • Insulation of the floor, walls and roof (see “House kit, insulated”), screw piles, delivery, assembly and crane
22 120 €
Order
House kit, insulatedThe same kit with basic PIR insulation fitted at our factory.
What's included

Everything in the house kit, plus

  • Floor: PIR 150 mm between the joists; under the shower room PIR 100 mm plus PIR 50 mm from below
  • Floor: PIR 200 mm between the joists; under the shower room PIR 150 mm plus PIR 50 mm from below
  • Floor: PIR 200 mm between the joists plus PIR 50 mm continuous from below — 250 mm
  • External walls: PIR 100 mm between the studs
  • External walls: PIR 150 mm between the studs
  • External walls: PIR 200 mm (2 × 100) between the studs
  • Roof: PIR 150 mm between the joists
  • Roof: PIR 200 mm between the joists
  • Roof: PIR 250 mm (2 × 125) between the LVL rafters

The insulation

  • PIR boards (EN 13165) foil-faced on both sides, thermal conductivity λD 0.022 W/mK — about one and a half times more effective than mineral wool of the same thickness
  • Fitted at our factory, foam-glued to the timber, all joints taped; the foil works as the vapour and airtight layer
  • Fully enclosed by the linings and the façade — the build-up meets the fire rules for houses of this size

Meets the norms

  • Thermal transmittance (EN ISO 6946): walls U 0.30, roof U 0.21, floor U 0.22 W/m²K; glazing Ug 1.1 W/m²K
  • Thermal transmittance (EN ISO 6946): walls U 0.21, roof U 0.16, floor U 0.16 W/m²K; glazing Ug 0.6 W/m²K
  • Thermal transmittance (EN ISO 6946): walls U 0.16, roof U 0.13, floor U 0.10 W/m²K; glazing Ug 0.6 W/m²K
  • Condensation checked month by month to EN ISO 13788 for four design climates
  • For use from spring to autumn: meets the rules for a holiday / temporary-stay house in every country of this version
  • For year-round use in a European winter; for a permanent home the energy rules of your country are checked in the architectural project
  • For year-round use in a northern winter, down to −30 °C outside
24 440 €
Order
Assembly on your plotOur crew assembles the kit on your foundation. The crane is arranged by you; travel and accommodation of the crew are at your cost.
What's included

What our crew does

  • Sets the sleepers on your levelled screw piles and fixes the anchors
  • Assembles the floor, wall and roof panels, joins the roof membrane and seals the joints
  • Installs the façade boxes, columns and cassettes
  • Bonds the glass units, fits the entrance door and the windows
  • Fits the insulation if you ordered the insulated kit
  • Crew: 3 people, about 3 days

Arranged by you

  • Screw piles and their installation, crane with operator, travel and accommodation of the crew, connection to the utilities
4 000 €
Order
Turnkey houseFinished inside and out — built complete at our factory in Estonia and delivered as one module. Delivery of the assembled house — on request.
What's included

Everything in the house kit, plus

  • Insulation of the floor, walls and roof (see “House kit, insulated”)
  • The house assembled, finished and tested at our factory in Estonia — delivered as a whole house, ready to be connected on your plot

Interior finishes

  • Floor, walls and ceiling in engineered oak boards 14 mm, brushed, extra-matt lacquer; floor laid floating on an underlay
  • Reveals, corner trims and junctions to the glass in matt black aluminium
  • Interior doors in black matt glass

Shower room

  • Reinforced fibre screed with a fall to the drain, two-component waterproofing with sealing tapes in every corner
  • Walls on waterproof tile-backer boards, porcelain tiles 60 × 60 matt; floor and shower in mosaic 10 × 10, anti-slip R10
  • Electric underfloor heating with a thermostat
  • Electric underfloor heating in every room, a thermostat in every room
  • Wall-hung WC on a concealed frame, washbasin on a vanity unit with mixer, shower system, glass shower screen

Water and drainage

  • Water inlet through an insulated duct; stop valve, filter, pressure reducer and non-return valve
  • Manifolds and multilayer pipes inside the walls, draining points for winter
  • Electric water heater 80 L with safety group, expansion vessel and anti-scald thermostatic mixer
  • Drainage in PP pipes with floor drains, one outlet through the floor; pipes under the house insulated

Ventilation and heating

  • Heat-recovery ventilation units in the rooms and an extract fan with humidity sensor in the shower room
  • Ready for an air-to-air heat pump: wall sleeves, pipe and cable routes, power supply

Electrical

  • Distribution board with a residual-current breaker on every circuit and surge protection
  • Cables in conduits, sockets and switches in black, recessed LED ceiling lights, LED at the bed heads, outdoor socket

Safety

  • Leak sensors with an automatic shut-off valve on the water inlet

Kitchen and storage

  • Kitchen unit 1400 mm: graphite cabinets, worktop, sink with mixer, built-in fridge, open shelves, glass splashback
  • Wardrobe at the entrance

Not included

  • Loose furniture and decor, the heat-pump units, screw piles, delivery, crane, connection to the utilities, well / septic tank
41 330 €
Order
Seasonal offer until 30 Dec 2026: ECHO 20.8 Seasonal Turnkey — 34 500 € FCA Muuga, excl. VAT.

All prices excl. VAT. For private buyers VAT is added to the invoice.

The project

Architectural project Start hereFloor plan, elevations, sections, build-ups, structure, snow and wind by country, U-values, condensation and compliance by country — everything for the building permit. Opens your owner area and the 3D with dimensions. The 490 € are credited toward the complete project.
490 €
Buy
Complete project and other sections
Complete project — all sectionsAll nine sections at once, a clean PDF and the full 3D model with every system, dimension and level for one year (then 1 € a day). For your own houses; commercial use is not allowed.
3 270 €
Buy
SectionIn the complete projectSeparately
Architectural projectFor the building permit in your country. Opens your owner area and the 3D with dimensions; the 490 € are credited toward the complete project.490 €490 €
Frame working drawingsEvery panel, member and fixing of the timber frame, with cutting plans.290 €406 €
Aluminium composite façadeBoxes, columns and cassettes: unfolded sheets, cutting maps, fabrication, fixing.790 €1 106 €
Interior designEvery wall, floor and ceiling laid out, finishes, junctions and order of works.490 €686 €
Electrical designDistribution board, circuits, routes, points, cable schedule.290 €406 €
Water supply and drainagePipes, manifolds, water heater, drains, falls, draining for winter.290 €406 €
GlazingGlass units, door and windows with all sizes and installation junctions.140 €196 €
Loads and moistureSnow, wind and condensation calculations with the full evidence, step by step.390 €515 €
Cost estimateAll quantities and prices of every section. Credited when you buy the complete project.100 €100 €

Separately each section costs about 40 % more; the architectural project always costs 490 € and is the first step. What is inside every section — see the contents.

Choose sections

Buy, subscribe or open your project again in your account — sign in with a code sent to your email, pay online, and access opens right away.

Delivery

Per truck trip—

Road distance by truck from our factory in Estonia to your unloading point × 1.30 € per km, at least 900 € per trip. Mega tautliner: roof and both sides open for unloading. Road tolls included, ferries are not included, excl. VAT. Approximate price, today’s rate. How many kits of ECHO 20.8 fit in one truck — we confirm with the order. The price is per truck — several kits share it.

The address is sent to OpenStreetMap services only to find the route; we don’t store it.

04 — Project

What is inside the project

ECHO 20.8: nine sections, 144 sheets of drawings and calculations plus the cost estimate, prepared for this house. Start with the architectural project for your building permit — 490 €, credited toward the complete project. Open any section to see every sheet in it.

Calculations done for these countries

  • UKUnited Kingdom
  • EEEstonia
  • LVLatvia
  • LTLithuania
  • CZCzechia
  • PLPoland
  • NLNetherlands
  • BEBelgium
  • DKDenmark
  • USUSA — New York State, ZIP 12496: permit set with a reinforced roof

Country versions of the architectural project are ready in the national language: English (UK), Estonian, Latvian, Lithuanian, Czech, Polish, Dutch (NL and BE), French (BE) and Danish. Snow, wind and moisture are calculated for every one of them. Other countries and regions with heavier snow or wind — on request.

  • NONorway — zones with ground snow up to 4.5 kN/m²
  • SESweden — except the north-west mountains
  • FIFinland — incl. Lapland
  • DKDenmark
  • EEEstonia
  • LVLatvia
  • LTLithuania
  • PLPoland — incl. the Tatra
  • CZCzechia — incl. the mountains
  • DEGermany — Alps up to 770 m
  • ATAustria — up to 540–840 m by zone
  • CHSwitzerland — up to 1,120 m (h0)
  • NLNetherlands
  • BEBelgium
  • UKUnited Kingdom
  • SCScotland
  • IEIreland
  • ISIceland — lowland sites, checked for the plot
  • FRFrance — Alps up to 1,130 m, other mountains up to 1,720 m
  • ITItaly — Alps up to 1,080 m, Apennines up to 990 m
  • ESSpain — outside the high Pyrenees and Sierra Nevada
  • PTPortugal — up to 1,930 m

Year-round version: deeper joists and studs carry ground snow up to 4.5 kN/m² and wind up to vb,0 31 m/s. Mountain regions pass up to the altitude shown; above it — the Lapland version. The master copy is in English; the version for your country is issued in your national language with the order.

  • NONorway — design case: worst snow and wind
  • SESweden — incl. the northern mountains
  • FIFinland — incl. Lapland
  • DKDenmark
  • EEEstonia
  • LVLatvia
  • LTLithuania
  • PLPoland — incl. the Tatra
  • CZCzechia — incl. the mountains
  • DEGermany — Alps up to 1,250 m
  • ATAustria — up to 1,140–1,490 m by zone
  • CHSwitzerland — Alps up to 1,720 m (h0)
  • NLNetherlands
  • BEBelgium
  • UKUnited Kingdom
  • SCScotland
  • IEIreland
  • ISIceland
  • FRFrance — Alps up to 1,930 m
  • ITItaly — Alps up to 1,820 m, Apennines 1,580 m
  • ESSpain — incl. Pyrenees and Sierra Nevada
  • PTPortugal

The structure is calculated for the worst snow and wind zone of Norway (sk = 9.0 kN/m², vb,0 = 31 m/s) and checked against the most severe regions of 22 European countries. Mountain regions pass up to the altitude shown; above it — a reinforced roof, calculated for your plot. The master copy is in English; the version for your country is issued in your national language with the order. Other countries and regions with heavier snow or wind — on request.

Architectural project19 sheets · 490 €For the building permit in your country. Opens your owner area and the 3D with dimensions; the 490 € are credited toward the complete project.
  1. Cover sheet, key data, drawing list
  2. Explanatory note 1: project, areas, construction
  3. Explanatory note 2: fire safety, services, applicant
  4. Site plan — template for your plot
  5. Floor plan
  6. Foundation plan — screw piles
  7. Roof plan and drainage
  8. Elevations 1 and 2
  9. Elevations 3 and 4
  10. Sections A-A and B-B
  11. Build-ups and junctions
  12. Structure: design basis and capacity
  13. Snow and wind loads by country
  14. Thermal transmittance (U-values)
  15. Condensation risk and heat loss
  16. Compliance by country (holiday / temporary-stay house)
  17. Fire safety and other rules by country
  18. Heat pump: renewable energy share, heat-loss check
  19. Conditions of approval by country

Buy the architectural project — 490 €

Frame working drawings21 sheetsEvery panel, member and fixing of the timber frame, with cutting plans.
  1. General data
  2. Frame scheme, section 1-1
  3. Sleepers and supports
  4. Floor framing plan
  5. Floor panels 1–3
  6. Roof framing, roof fall, ceiling boarding
  7. Roof panels 1–3
  8. Plan of walls, posts and top plates
  9. External walls and the shower-room partition
  10. Junctions and details
  11. Parts schedule
  12. Cutting plan, timber 45×145
  13. Cutting plan, 45×95, 45×70, LVL
  14. Cutting maps, OSB 12
  15. Cutting maps, OSB 22
  16. Materials and fixings schedule
  17. Façade and glazing interface
  18. Check of model, workshop and offer
  19. Glazing spacers
  20. Embedded steel plate: part drawing
  21. Embedded steel plates: installation
Aluminium composite façade18 sheetsBoxes, columns and cassettes: unfolded sheets, cutting maps, fabrication, fixing.
  1. General data
  2. Façade scheme, item marks
  3. Section 1-1: lower box
  4. Section 2-2: upper box
  5. Plan junctions: corner, columns, joints
  6. Wall cassettes: layout and junctions
  7. Unfolded lower boxes
  8. Unfolded upper boxes
  9. Unfolded columns
  10. Unfolded wall cassettes and infill panels
  11. Cutting maps of composite sheets 1575 × 3200
  12. Ribs and brackets, plywood cutting
  13. Substructure: battens and angles
  14. Fabrication: routing, bending, corners
  15. Installation and wind check
  16. Specification
  17. Parapet cap: unfolded panels
  18. Window and door: cassette-to-frame junction
Interior design12 sheetsEvery wall, floor and ceiling laid out, finishes, junctions and order of works.
  1. Room: concept, 3D views, materials
  2. Room: floor plan, board layout
  3. Room: ceiling plan, lights
  4. Room: wall elevations with board layout
  5. Room: finishing junctions
  6. Room: materials, order of works, care
  7. Shower room: concept, 3D views, materials
  8. Shower room: floor plan, mosaic, fall, levels
  9. Shower room: floor heating, provisions, ceiling plan
  10. Shower room: wall elevations, part 1
  11. Shower room: wall elevations, part 2, junctions
  12. Shower room: materials, order of works
Electrical design7 sheetsDistribution board, circuits, routes, points, cable schedule.
  1. Single-line diagram of the distribution board
  2. Board: general view, layout, labelling
  3. Wiring plan, cable routes
  4. Back wall elevation, junctions
  5. Load calculation, cable schedule
  6. Materials specification
  7. Isometric wiring diagram
Water supply and drainage7 sheetsPipes, manifolds, water heater, drains, falls, draining for winter.
  1. Water supply: cold and hot water installation plan
  2. Drainage: installation plan, falls
  3. Isometric diagrams of water and drainage
  4. Technical compartment: water inlet, manifolds, water heater
  5. Connection points, calculations, tests
  6. Materials specification
  7. Draining for winter, leak protection
Glazing7 sheetsGlass units, door and windows with all sizes and installation junctions.
  1. General data, glass-unit build-up
  2. Glass-unit section, edge
  3. Stepped gable glass
  4. Façade glass units
  5. Installation scheme
  6. Installation junctions
  7. Glass as a structural element
Loads and moisture53 sheetsSnow, wind and condensation calculations with the full evidence, step by step.
  1. Cover, contents, design basis
  2. Snow load: method and values by country
  3. Wind: method and velocity pressure by country
  4. Wind on the house: pressures, forces, pile reactions
  5. Load combinations, partial factors, design values
  6. Verification of every structural element, limit snow load
  7. Results by country and region
  8. Moisture: standards and acceptance criteria
  9. Moisture: build-ups and vapour data
  10. Moisture: EN ISO 13788 method and worked example
  11. Moisture: monthly condensation, base climate
  12. Moisture: four design climates, drying, accumulation
  13. Moisture: built-in moisture, drying reserve, timber moisture content
  14. Conclusions, conditions of use, responsibilities
  15. Annex A (11 sheets) — snow and wind step by step: dead loads, altitude and zones, worked examples for eight sites, pressures on walls, roof and glazing, uplift, overturning and sliding, loads on every screw pile
  16. Annex B (5 sheets) — calculation cards for every structural element: roof joists and fixings, front beam over the glazing (FEM model), glazing posts, back wall, sleepers, anchors
  17. Annex C (21 sheets) — moisture of every roof, wall and floor build-up month by month, surface condensation and mould, drying reserve, timber moisture, seasonal and year-round use, inspection forms
  18. Annex Z (2 sheets) — register of assumptions and open points, standards and references
Cost estimateExcel with formulasAll quantities and prices of every section. Credited when you buy the complete project.
  1. Summary estimate of the turnkey house (materials, labour, total per section)
  2. Frame and roof, insulation
  3. Façade
  4. Glass units, windows and door
  5. Water supply and drainage
  6. Electrical
  7. Room finishing
  8. Shower-room finishing

Also in the complete project (not sold separately): furnished layout and room schedule, shower room and technical compartment set (6 sheets), turnkey specification, snow and wind table for Europe, 3D of the frame and of all systems.

Start with the architectural project — 490 €All prices
05 — Views

The house

ECHO 20.8 in the forestView from 1.3 m: glazed façade and the glass gableView from 1.3 m: glazed façadeView from 1.3 m: glazed façade and the end wall with the windowElevation: glazed façadeElevation: glass gableElevation: back wall with the entrance doorElevation: end wall with the window
06 — Specification

Key data

UseHoliday / temporary stay, 1–2 persons
Storeys1, no basement, no attic
Overall size (facade frame)7.017 × 3.717 m
Building footprint26.1 m²
Gross floor area (external)21.0 m²
Net heated floor area18.3 m²
Clear room height2.52 m
Height above groundabout 3.5 m
RoofFlat, fall 1.3 %, EPDM membrane
StructureFactory-made timber module on 13 screw piles, no permanent foundation
FaçadeAluminium composite, black matt; triple structural glazing
Heating and ventilationAir-to-air heat pump, heat recovery
EnergyElectricity only, no combustion appliances