Bought a Plot — What Now? Your Plan up to the Building Contract
The plot purchase is notarised – and now? Between signature and the first spade cut lies a clear roadmap of soil survey, development plan, budget reconciliation, provider choice and offer check. Anyone who keeps to this order prevents planning errors and additional costs. This guide leads you step by step from the bought plot to the building contract ready for signature – with a schedule, checklist and the right tools for each stage.
The plot purchase has been notarised – and now what? Between signing and the first spade cut lies a clear roadmap consisting of a soil survey (Bodengutachten), the development plan (Bebauungsplan), a budget review, provider selection and a thorough quote check. Anyone who follows this order prevents planning errors and additional costs. This guide leads you step by step from the purchased plot to a construction contract ready for signing – with a schedule, checklist and the right tools for each stage.
Bought a plot – what do I do first?
Short answer: The first step after the purchase is the technical clarification of the plot: a soil survey (Bodengutachten) and a look at the development plan (Bebauungsplan). The soil survey – as a cost range usually in the low to mid four-figure euro range, as of 2026 – shows load-bearing capacity, groundwater and the type of foundation, and thus directly influences the construction costs. The development plan determines what you may build: size, height, roof shape and setbacks. Only once both are known can budget, construction method and provider be sensibly determined.
This basic clarification prevents the most expensive surprises. Difficult building ground can necessitate an elaborate foundation, and a tight development plan restricts the floor plan. Both should be clarified before you plan a house or obtain quotes. A structured examination of the plot is provided by the plot check.
Also take the time to organise the purchase documents: the certified purchase contract, the site plan, the current land register extract (Grundbuchauszug) and – where available – earlier surveys. Clarify whether the servicing (water, wastewater, electricity, road) is already secured or whether development contributions (Erschließungsbeiträge) are still coming your way, because these costs flow directly into your budget frame. Also check whether third-party rights such as rights of way or utility easements are entered in the land register that restrict the buildable area. The more complete this starting position is, the more robust the later quotes from the house providers will be.
Which steps lead to the construction contract?
Short answer: Five steps lead from the purchased plot to the construction contract: 1. obtain the soil survey, 2. evaluate the development plan, 3. set the budget based on the plot results, 4. select provider and construction method, 5. obtain quotes and compare them in the quote check. Each step provides data for the next: the soil survey influences the budget, the development plan the construction method, the budget the provider selection. In the end this produces a construction contract that suits the plot and the wallet.
The order is decisive. Anyone who fixes the budget before the soil survey may have to make adjustments if the foundation becomes more expensive. Anyone who contacts providers without knowing the development plan receives quotes that may not even be capable of approval. Classify your budget with the calculator How much house can I afford as soon as the plot data are available. A neutral overview of the basics of the building ground and soil survey is provided elsewhere.
The 5 steps from plot to construction contract
| Step | Content | Result |
|---|---|---|
| 1. Soil survey | check building ground, groundwater, foundation | basis for foundation costs |
| 2. Development plan | specifications on size, height, roof, setback | frame for the design |
| 3. Set the budget | factor in the plot results | realistic cost frame |
| 4. Choose provider | determine construction method and manufacturer | suitable quote partners |
| 5. Quote check | obtain and compare quotes | contract ready for signing |
From plot to the suitable house quote
Once building ground and development plan are clarified, the quote comparison follows. Request the quotes of several prefabricated house manufacturers that suit your plot and budget free of charge – transparent and without obligation.
How do I set the budget and provider?
Short answer: The budget arises from equity, an affordable monthly rate and the now known plot costs including foundation and servicing. Only with this frame do you choose the construction method and provider: prefabricated house or solid house, turnkey or a fit-out stage, catalogue or individual planning. Always obtain several quotes and compare them on the same basis of services. This way you recognise which provider can build your house at which fixed price.
When budgeting, make sure to capture all items: besides the pure house price, there are ancillary construction costs (Baunebenkosten) for the notary, surveying, building permit, house connections, outdoor facilities and a reserve for unforeseen items. These ancillary costs make up a noticeable share of the total and are often underestimated by prospective builders. A budget that plans for them from the outset protects against financing gaps during the construction phase.
When choosing a provider, the programme, references, construction method and contract terms all count. Compare systematically rather than by gut feeling. A market overview is offered by the page Providers at a glance. Which questions you should ask is shown by the question catalogue for prefabricated house providers. Whether a property developer (Bauträger) or a prefabricated house suits you better is clarified by the comparison of property developer or prefabricated house.
How long does it take from plot to building?
Short answer: From plot clarification to the signed construction contract – as a rough guide – usually takes around three to six months, depending on the availability of surveys, quotes and financing. The soil survey takes a few weeks, the provider selection and quote comparison likewise, plus the time for financing and contract review. The table shows a typical schedule as orientation; your specific course may be shorter or longer.
Schedule from plot to construction contract (orientation, as of 2026)
| Stage | Typical period | Note |
|---|---|---|
| Soil survey | approx. 2–4 weeks | note appointment scheduling |
| Evaluate development plan | approx. 1–2 weeks | viewable at the building authority |
| Budget & financing | approx. 2–6 weeks | involve bank/broker |
| Provider choice & quotes | approx. 4–8 weeks | request several in parallel |
| Quote check & contract | approx. 2–4 weeks | check before signing |
Working in parallel saves time
Many stages can overlap: while the soil survey is running, you can evaluate the development plan and contact the first providers. Only the quote check and the contract signing should come at the end, once all the basics are secured.
How do I check the quote before signing?
Short answer: Before signing, the quote, building specification and construction contract belong on the test bench. Compare several quotes on the same basis of services, pay attention to the fixed price, clearly described services, deadlines and payment plan. Check what is included and what costs extra, and assign hidden items to the ancillary construction costs. A structured quote check makes differences visible and protects against inflated prices and gaps in the services.
- Soil survey and development plan available as a planning basis.
- Budget including plot, foundation and ancillary costs set.
- Several providers and quotes obtained on the same basis.
- Building specification checked for services and exclusions.
- Fixed price, deadlines and payment plan checked in the construction contract.
- Quote check carried out as a comparison before signing.
For a structured comparison, use the quote check and request several comparison quotes via suitable house quotes. How to check the contract yourself is explained by the guide to the construction contract. This way you enter the house build with a checked, viable contract.
Plot clarified – now compare quotes with confidence
Check your plot in the plot check and contrast incoming house quotes in the quote check. This way you find the suitable provider at a fair fixed price – free of charge and without obligation.
What does your dream house really cost?
Request suitable quotes from vetted manufacturers for free and compare the prices per square metre for your construction project.
Compare house prices nowImportant questions briefly explained
The most common price questions around Bought a Plot — What Now? Your Plan up to the Building Contract – answered concisely by the Prefabricated House editorial team (as of 2026).
