Can I, as a layperson, build a house myself?

The reality on the construction site: What is possible and what remains forbidden

The illusion of total savings

The main reason people want to build their own house is money. So-called "sweat equity" is often seen as a substitute for regular equity.

Banks, however, take a pragmatic approach. If you state that you intend to build your house yourself , most financial institutions will only recognize a maximum of 5 to 10 percent of the construction costs as your own contribution. Why so little? Because building a house yourself takes time. Time that you hardly have alongside your job.

Here's a calculation example: A shell construction costs approximately 300,000 Swiss francs. Of that, roughly 40% is for materials and 60% for labor. If you wanted to handle this portion yourself when building the house , you would have to work full-time on the construction site for months. Anyone wanting to build their own house needs to be honest with themselves: The savings are more likely to be found in the interior finishing (painting, flooring), not in the structural engineering.

Legal hurdles: What am I actually allowed to do?

If you decide to build your own house , you will quickly encounter legal limitations.

• Electrical installations: In Switzerland, the Low-Voltage Installation Ordinance (NIV) applies. As a layperson, you are allowed to hang lamps, but not to lay cables or connect fuse boxes . Anyone who undertakes this work themselves when building a house risks losing their insurance coverage and incurring fines .
• Plumbing and gas: Here too, the rule is: critical connections should be left to professionals. Water damage caused by improperly crimping a pipe while building your own house is often not covered by insurance.
• Structural engineering: You must not build load-bearing walls without an engineer's approval. The DIY house project ends where safety begins.

The role of the client : You are liable for everything

to build a house themselves automatically assumes the role of the client .

This means: You are responsible for safety on the construction site.

If you invite friends to help you build your own house and someone falls from the scaffolding, you are liable. Builder's liability insurance and construction insurance are mandatory when embarking on the adventure of building your own house . You must also register your helpers with accident insurance. Building a house yourself with friends on the weekend can have devastating consequences.

Time management: The double burden

Never underestimate the time factor if you want to build a house yourself .

A professional team can build a detached house in 6 to 9 months. If you, as a layperson, want to build a house yourself , this time often doubles or triples.

• After-work construction project: Can you spend 4 hours plastering walls after 8 hours of office work? Every day? For over a year?
• Relationship test: Many couples who build a house together underestimate the stress. The project of building a house is one of the most common reasons for breakups during the construction phase.

The decision to build a house oneself requires iron discipline and sacrifice of leisure time.

Where self-help makes sense

Despite all the warnings, there are areas where building a house yourself (or providing partial services) makes sense:

• Painting work: Here you can save a lot and damage very little when building your own house .
• Floor coverings: Laying laminate or parquet flooring as a floating floor is feasible for laypersons who are building their own house .
• Garden design: Those who want to build their own house can often rent machinery for the outdoor area and contribute a lot of their own labor without endangering the building structure.
• Demolition work: During renovations, " tearing out " is a classic task for anyone building their own house .

Quality assurance

A professional provides a warranty. If you want to build your house yourself , you provide the warranty yourself.

crack after two years because you didn't properly prepare the screed when building the house yourself , you have to pay for the repair yourself.

Remember: Building a house yourself This also means paying for mistakes yourself . The resale value can suffer if it's obvious that an amateur was involved. A "DIY" house is harder to sell. Anyone who wants to build a house professionally should at least hire an expert for construction management to oversee their own work.

Financing and banks

Banks are skeptical when laypeople want to build a house themselves .

They often require a buffer in the construction loan in case you fail and have to hire tradespeople after all.

If you tell the bank, "I want to build my house myself and save 100,000 francs in labor costs," they usually won't accept that. They'll check if you're qualified. Are you a bricklayer? Then yes. Are you a teacher? Then probably not. The project of building your own house needs to be financially secured as if it were being built by professionals.

Conclusion

Can you, as a layperson, build a house yourself ? Yes, but not in the way you might imagine. Building an entire house yourself – from the foundation to the roof – is practically impossible for laypeople in Switzerland and hardly permissible under the law. The complexity of building technology, the strict regulations, and the physical strain make it impossible.

Building your own house should be seen as a collaborative effort. Focus on the interior finishing and simple tasks. View building your own house as an opportunity to personalize your home, not as a way to cut construction costs in half. The risk of overestimating your abilities is high. Anyone wanting to build their own house needs realistic plans, good insurance, and professional partners for the critical trades.

If you want to assess whether your planned budget for home ownership is realistic or how your own contributions could affect the value, Loft offers helpful data analysis to put your project on a secure foundation.

Glossary

• Muscle mortgage: The financial value of the work that homeowners contribute when they build their own house , and which is sometimes credited by banks as a substitute for equity capital.
• SIA standards: Rules of the Swiss Society of Engineers and Architects that define technical standards which must also be adhered to when laypersons build a house themselves .
• Builder's liability insurance: An essential insurance that covers damages that occur to third parties on the construction site – indispensable if you want to build a house yourself .
• NIV (Low-Voltage Installation Ordinance): Legal regulation that prohibits laypersons from carrying out critical electrical installations, even if they are building their own house .
• Construction loan: A special loan for the construction phase, which is converted into a mortgage and where banks often scrutinize applications strictly if customers want to build their own house .