A search starts with filters, but filters that are too strict can hide suitable options. First decide which conditions are truly essential and which are merely desirable.

Rank your requirements by importance

Put the conditions without which a flat would not work for your family into the essential group. The second group is for comforts you would pay more or search longer for. For each compromise, note a limit: extra travel time, less floor space, a different floor.

Decide when to review the criteria

After the first batch of listings, check whether your set of requirements appears at all within your budget. Change one parameter at a time so you understand why the results change. Do not widen the area and the budget at the same time without comparing.

How to set your search budget

Separate the figure in the listing from the full cost of living there. For shortlisted flats, clarify the basic rent, what the service charges include, separate connection contracts and one-off costs. If you have a car, add parking; if daily journeys matter, count the time and transport costs. Do not put zero in rows you do not know. Set a maximum above which a flat is ruled out and a target level that leaves room for the family's other needs. Personal financial decisions require your own calculation and, if necessary, advice.

How to test whether your criteria are realistic

Collect a small sample of current listings in comparable areas. Note how many actually meet your essential conditions, how many are already taken and where the gaps are. This kind of check is more useful than general stories about an easy or difficult market. If there are hardly any options, pick one criterion to reconsider and search again. Keep the original version of your requirements: otherwise, after several changes, it will be hard to see which compromise produced the result and whether the whole family agrees with it.

How to hand the search brief to a helper

Share not just the filters but the reasons behind them. Explain why a particular area or room size matters, when viewings are possible and who may reply to the landlord. Agree which documents can be shared and at what stage. For each option, ask for a short summary: how it meets the requirements, unknown conditions, a link and the next step. A helper should not have to guess whether the budget can go up or a different date is acceptable. Decisions outside the agreed limits come back to you.

How to describe an acceptable compromise

Instead of “a bit further out is fine”, state the real limit on the journey and the travel time you need. Instead of “ideally more spacious”, describe how the room will be used: a desk, a children's area or storage. For each wish, decide what alternative could replace it. Discuss this with the person who will live with the compromise every day. A helper needs an agreed limit, not permission to guess your preferences from how attractive a listing looks. Changing an essential condition goes back for discussion, even if a flat looks good in every other respect.

How to keep the brief up to date

After a round of enquiries, look at which flats are actually available and why others do not fit. If most are ruled out by one condition, check the reason for it, but do not drop it automatically. The restriction may be fundamental for the family, and it is the budget or the date that needs reviewing. Keep versions of your criteria and the reasons for changes. This helps you compare search results and avoids blaming a helper for ignoring a requirement that was changed verbally. Decisions about a flat should rest on the current agreed set, not on different versions scattered across your messages.

What to check

  • State who will live there and the move-in date.
  • Distinguish between your target price and your maximum budget.
  • Pick three conditions that are not negotiable.
  • Note which options have already been checked.

Example situation

If an extra change of train becomes acceptable, check the real journey time instead of simply adding the whole neighbouring town to the search.

Next step

A good brief helps you make consistent decisions about different listings and explain them to a helper.

Official information on this topic

Checklists and examples are organisational recommendations. Requirements depend on the procedure, the city and your situation; check them with the relevant office before you act. Please discuss legal and tax questions with an authorised professional.

This article was prepared with the help of AI. The example illustrates the approach and does not describe a client case.