the ideal triangular house for happy living, urban food production and sustainable utilities to help solve the urban slum poverty

Tridealhouse, a sustainable solution for slum dwellers to acquire and finance their own food-producing house to help break the poverty cycle

Many appropriate technologies, among which:


Recirculating Shower


Solar Sanitary Water Heater


Attic Ventilation

Tridealhouse meets the five needs defined by UN-Habitat to solve the slum challenges… and more

Challenges as defined by


Tridealhouse solutions

1. Access to improved

drinking water

Collecting rainwater.

Over 30 m2 footprint in water tanks near or under the house. Water tanks 18 m3. Sand filter and ceramic filters.

2. Access to improved

sanitation facilities

A toilet and shower.

Oxfam tigerworm toilet model, connected to a septic tank under the house. Common biogas tank to compost the material. Recirculating shower.

3. Durability of housing

50 to 80 years durability.

Minimal maintenance. Becoming a pension insurance for the poorest. Protecting from all adverse climate conditions.

4. Sufficient living area

32 m2 living space.

27 m2 footprint, 2 sleeping mezzanines and a 2 m2 toilet/ shower box

5. Secure Tenure

Not bound by ownership of the land.

Land-ownership can be replaced by ownership of the components on land of the government.

and more…

creating an urban farming micro-job with food production.

The house produces food and more.

1/3 of food own use, 2/3 for local exchange and revenue generation. Combining a micro-job with caring for the children and elderly. Sustainable utilities.

Tridealhouse: achieving poverty reduction through urban food production

Tridealhouse is the only sustainable and climate-resilient house that finances itself by own food production. The triangular house provides urban farming on the slopes, equivalent of a ~ 90m2 of hydroponic agricultural area, and micro-lifestock in the cellar.


Any slum family can afford to finance a Tridealhouse!
It produces ~ 800 US$ annual cash + 1/3 own food

++ 20 $ monthly savings on rent

++ 10 $ monthly savings on charcoal

++ 60 $ monthly revenues on food sales

800 $ to 1100 $ yearly

net repayment capacity + $ +

extra food left for living

Tridealhouse can be repaid even by the poorest in ~10 years with adapted micro-financing, support and monitoring mechanisms

Tridealhouse fulfills 12 of the 17 Sustainable Development Goals

No Poverty

Tridealhouse provides a micro-job and micro-income on the house itself

Zero Hunger

Tridealhouse provides more and better urban food (vegetables, fruits and small animals)

Good Health and Well-being

Tridealhouse creates a healthy and happy environment

Gender Equality

Tridealhouse specifically empowers women and children

Clean Water and Sanitation

Tridealhouse fulfills WASH needs, it collects the rainwater in 18 m3 foundation tanks

Affordable and Clean Energy

Tridealhouse offers solar sanitary hot water + small solar LEDs

Decent Work and Economic Growth

Tridealhouse provides a fulfilling micro-job and creates micro-economic communities

Reduced Inequalities

Tridealhouse empowers the poorest, provides the elderly with a pension and food security

Sustainable Cities and Communities

Tridealhouse makes cities more sustainable and brings urban farming in cities

Responsible Consumption and Production

Tridealhouse empowers local communities

Climate Action

Tridealhouse is climate resilient and climate-friendly

Partnerships to achieve the Goals

Tridealhouse mobilizes academics, government, civil society, industry, ODA, UN and impact financiers

Eight dimensions for local and global outreach

Price per house = 11.000* US$

Generating 600-1200 US$/year

*at industrial mass production

Modular system

Onsite assembly in one day

Durability > 80 years.

Minimum maintenance.

Conforming to building codes

Urban farming

Inclusion of SDG/ Sustainable utilities

Social engineering

75% of materials sourced

nationally or regionally.

Innovation & technology transfer

Cooperation with Government, ODA, EIB,

WB, UN, Universities, R&D industry,

Impact Investors

Production of modules in peer-supported

factories. Focus on

training, productivity, quality

Industrial production in state-of-the-art concrete precast, steel profile, HPL and PE/PVC factory cluster

Tridealhouse is cooperating with leading industries and research centers who share their best production know-how and technologies:

  • to achieve the highest efficiency of production,
  • to make high quality Tridealhouses at lowest costs, affordable to the poorest,
  • to establish local industrial capacity and use as much local resources as possible to have highest impact on SDG

500 local jobs to produce 10,000 Tridealhouses per year/ factory

Tridealhouse has an open, transparent “SDG industry” cooperation model. The Tridealhouse humanitarian-social and industrial-economic model has grown out of a concept of a “basic needs industry” or “SDG industry” that was inspired by James Grant, DG of UNICEF 25 years ago. Tridealhouse builds on, and integrates the knowledge and best practices of 15 UN and related organizations.

Vaccines can be produced with small fixed profit margin for mass vaccination of all children. The basic SDG needs of all slum dwellers can be met by cooperative industrial production of sustainable houses in which 12 of 17 SDG are integrated. This can be achieved in cooperation with leading industries, research centers, governments, ODA/UN agencies and foundations/ impact investors. We invite all to join.

Meet The Team

Dr. Michel Loots

Founder & CEO of Tridealhouse

Roger van Praet


Fasika Kelemework

Director Ethiopia/Africa

Alice Ostyn

Assistant Director

Mebratu Hassan

Lead Architect

Ellen Lejeune

Product Developer

Tridealhouse is a vaccination against poverty!

Tridealhouse is proud and thankful for the collaboration with the following industrial & research partners, and supporting organisations

Tridealhouse is particularly grateful for the support from, and partnership with, the Happel Foundation