Build planning step by step 2026

Planning a home: from the first idea to the building application

Planning a home feels overwhelming at first — with the right order it becomes a manageable project. We guide you through six clear steps, from clarifying your budget through plot, provider and floor plan to the selection appointment and building application — along with the right online tools.

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Why the right order determines your success

People planning a home rarely come unstuck over individual decisions, but over the wrong order. Anyone who buys a plot before their budget and financing are settled, or designs a floor plan without knowing the development plan (Bebauungsplan), ends up paying more in the end. Nationwide consistent foundations and model rules for building planning law are coordinated by the Conference of Building Ministers (Bauministerkonferenz). A well-thought-out build plan therefore follows a clear sequence: first the money, then the plot, then the provider, then the house. Each step builds on the previous one and narrows the options sensibly, rather than overwhelming you with countless choices. How the individual planning services and fee phases are regulated is defined by the German fee scale for architects and engineers (HOAI).

The plus point with a prefabricated house: many planning services are already included in the fixed price, and modern online tools take work off your hands. Below you will find the six key steps — each with the right tool that lets you get started right away.

To a fully planned home in 6 steps

Clarify budget and financing

Find out how much house is financially feasible. Set incidental purchase costs, a buffer and grant options realistically.

Find and assess a plot

Location, shape and the development plan set the framework. Check the site servicing, soil survey and building law thoroughly.

Compare providers

Compare manufacturers, services and fixed prices. Look at the construction and services specification, not just the base price.

Work out the floor plan

Align rooms, circulation and orientation with your daily life. Keep later stages of life and accessibility in mind.

Carry out the selection appointment

Decide on floors, bathrooms, doors and building services. Clarify what the price covers and where surcharges arise.

Submit the building application

The provider or architect submits the permit documents. Construction only begins once the building permit is in place.

These tools support you with your build planning

There is a matching tool for every planning step. You can work out your budget and realistic costs fastest with the real construction cost calculator, which factors in not only the house price but also the plot and incidental construction costs. Once your budget is fixed, the floor plan finder helps you filter out the right floor plan for your family from thousands of variants.

If you want to put your home together down to the last detail, reach for the house configurator and try out house type, roof shape and fittings. So that the schedule does not spiral out of control, the construction phase planner keeps you on top of every stage from financing to the handover of keys. That turns a rough idea into a well-thought-out, realistic plan.

Budget first

Clarify financing before the plot or house are decided.

The plot sets the framework

The development plan and plot shape define what may be built.

Freely designable floor plan

Modern prefabricated houses can be planned largely to your own design.

Between 3 and 6 months

That is how long planning up to the submitted building application usually takes.

Plan your home – with the right providers

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Frequently asked questions about home planning

Answers on the process, costs, floor plan, selection appointment and building application — concise and up to date for 2026.

How do I plan a home step by step?

Home planning follows a logical sequence: first you clarify your budget and financing, then you search for and assess a plot of land. Next you compare providers and their services, work out the floor plan, decide on fittings and materials at the selection appointment (Bemusterung) and finally submit the building application. Tackling these steps in the right order helps you avoid costly planning mistakes and keeps your budget under control.

What does planning a home cost?

With a prefabricated house, planning is usually already included in the provider's fixed price, so there are no separate architect's fees. For a freely designed architect-built house, the fee is based on the German fee scale for architects and engineers (HOAI) and typically runs at roughly 10 to 15 percent of the construction sum. In addition, there are costs for the building application, structural engineering, the energy performance certificate and surveying — you should factor these in from the outset.

What comes first: the plot or the house?

Usually everything starts with clarifying your budget; the plot follows only after that. You can only plan the house concretely once the plot, location and local development plan (Bebauungsplan) are fixed — because the shape, slope and requirements of the development plan all influence which house type and floor plan are even feasible. Some providers also help with the plot search, so both steps can run in parallel.

How long does planning a prefabricated house take?

From the first idea to the submitted building application, a prefabricated house usually takes three to six months. The actual construction time from the start of the build is comparatively short afterwards. How long it takes depends heavily on how clear your ideas are, how quickly the plot and financing come together and how swiftly the building permit is issued. Thorough preparation with clear priorities noticeably shortens the planning phase.

Can I plan a prefabricated house to my own design?

Yes. Contrary to a widespread prejudice, prefabricated houses can today be planned largely to your own design. Many providers offer freely configurable floor plans, various roof shapes, façades and fitting ranges. Using a configurator you can try out variants, and at the selection appointment you decide on floors, bathrooms, doors and building services. The main limits are set by the manufacturer's modular system, your budget and the requirements of the development plan.

What should I keep in mind at the selection appointment?

At the selection appointment (Bemusterung) you determine the concrete fittings of your home — from floor coverings and sanitary ware to electrical and heating technology. It is crucial to clarify in advance which fittings are already included in the offer and where surcharges arise. Take enough time, compare the prices for extras and have every agreement confirmed in writing, so that the construction costs do not spiral out of control in the end.

Do I need a building application to plan a home?

Yes. Building a new residential house almost always requires a building permit, which is applied for via a building application to the responsible building authority. With a prefabricated house, the provider or an appointed architect usually prepares and submits the building application documents. Construction may only start once the permit has been issued.

As of 2026, without guarantee. The process, duration and costs of home planning depend on your individual project. Prefabricated House is an independent comparison portal and does not replace individual construction or financial advice.