Undersökningsplikt: what the buyer's duty to inspect means when you buy in Sweden

There's one sentence I've heard from Swedish estate agents more than once over the last few years: "Allt köparen kunde ha upptäckt, det är köparens problem." Anything the buyer could have discovered during a careful viewing is the buyer's problem.

If you come from abroad and buy a house or a flat in Sweden, the tone of that can surprise you the first time. In Germany, where I come from, we expect the seller to disclose problems. In Sweden it works the other way round: the buyer has a legal duty to inspect, the undersökningsplikt, and it goes further than most newcomers assume.

This article is for anyone who is seriously looking at a bostadsrätt (a co-op flat), a villa or a stuga in Gothenburg, Bohuslän or elsewhere in Sweden. I'll explain what the undersökningsplikt really means legally, where instincts from home miss the mark, and how to protect yourself in practice before you put your name to a six- or seven-figure contract.

The duty to inspect kicks in right in the middle of the buying process. The process from visning to tillträde shows exactly where it applies, and what comes after: your villaförsäkring (house insurance) has to be in place from the day you take possession, and it doesn't cover what you overlooked during the viewing.

The basic principle: Jordabalken, chapter 4, section 19

The legal basis is in the Swedish Land Code, the Jordabalken, chapter 4, section 19. The wording is surprisingly brief, and that brevity is exactly why so many buyers from abroad get a shock in practice:

Köparen får inte åberopa fel som denne borde ha upptäckt vid en sådan undersökning av fastigheten som varit påkallad med hänsyn till fastighetens skick, den normala beskaffenheten hos jämförliga fastigheter samt omständigheterna vid köpet.

In English: the buyer cannot invoke defects that they should have discovered during an inspection that was called for given the condition of the property, the normal state of comparable properties and the circumstances of the purchase.

These three anchors (the condition of the property, the comparison standard and the circumstances) matter because they scale the extent of the duty. A 30-year-old wooden house in Bohuslän comes with a different undersökningsplikt from a newly built bostadsrätt at Lindholmen. But in both cases it goes further than most people expect.

Everything you're expected to inspect as a buyer

When you view a house in Germany, for example, you typically walk through the rooms, look at the bathroom, kitchen, cellar and loft, ask about the heating and the building file, and then sign at the notary's office. In Sweden, that isn't enough.

According to established practice and case law, the undersökningsplikt covers at least:

• all rooms, including the vinden (loft) and the krypgrund (crawl space),
• the outside of the façade, as far as it's accessible,
• the roof, as far as you can see it without special equipment,
• all visible installations (plumbing, heating, electrics),
• the grounds, drainage, retaining walls and fence,
• for waterfront properties: jetty, bryggor and the shoreline protection situation (see also understanding strandskydd),
• for stugor in Bohuslän, Dalsland or Småland: the well, the septic tank and any shared facilities.

Anything you would have to tear open or damage to check is not considered reasonable. But everything that would be accessible to a practised, thorough visual inspection will be held against you later.

A practical litmus test: if a besiktningsman (building inspector) can later reveal a defect without destructive intervention, you should have seen it too.

"Dolt fel": the narrow corridor where the seller is liable after all

There is an exception, and it's much narrower than it sounds: dolt fel, the hidden defect.

A defect only counts as a dolt fel if it meets three conditions:

1. It was not detectable during a professional inspection.
2. The buyer could not have expected it, given the age and condition of the property.
3. It already existed before the sale.

Classic examples from Swedish case law: mould behind a wall that had been freshly skimmed on the inside. A broken drainage system that wasn't accessible. Faulty wiring hidden behind closed junction boxes.

What does not count as a dolt fel: a 40-year-old roof with a life expectancy of 30 years. A damp crawl space in a house from 1972 whose drainage has never been renovated. Visible moss growing on the plinth. This is where the comparison standard kicks in: with an old house, you have to expect old-house problems.

And there's another hurdle: you have to notify the seller of the dolt fel within a skälig tid, a reasonable period, after you discover it. In practice that usually means a few weeks, not months. If you find mould in October and only make a claim in March, you've missed the deadline, even if the overall ten-year limit still has a long way to run.

The ten-year limit: security, but not a free pass

The preskriptionstid (limitation period) for dolda fel is ten years from tillträde, the day you get the keys. That sounds like a long safety net, but it's more nuanced than you might think.

First: the limit only applies to dolda fel, not to everything you could have seen. Second: you have to make your claim within the "skälig tid" after discovery. Third: you have to prove that the defect already existed at the time of the sale, which gets difficult with water in the crawl space that you find in year nine.

In Swedish practice, many dolt fel disputes end in a settlement of between 30 and 70 per cent of the repair costs, rarely a hundred per cent. If you want full compensation, you have to go to court, and proceedings at the tingsrätt (district court) take one to two years. With around 500,000 SEK at stake, your own legal costs can quickly reach 80,000 to 150,000 SEK, and even if you win, they're only partly reimbursed.

The besiktningsman: the most important investment before you buy

This is the one lever that buyers from abroad overlook most often: the besiktningsman, the independent expert who carries out an överlåtelsebesiktning (a pre-purchase building inspection).

An överlåtelsebesiktning is a systematic, documented inspection by a trained and certified inspector (SBR, SITAC). At Anticimex, the basic level costs around 9,600 to 10,800 SEK for a villa, terraced house or fritidshus (holiday home) (as of 2026); more for larger houses or additional specialist investigations.

The key point: carrying out an överlåtelsebesiktning extends your undersökningsplikt. Whatever the besiktningsman notes in the report or flags as a "recommendation for further investigation" becomes part of what you were expected to know. At first that sounds like a disadvantage, but it's exactly the point. You take away the seller's option of hiding behind "you should have seen that" later, because what you did see is now properly documented.

If you hire a besiktningsman, you should:

• choose them yourself, rather than automatically taking the one the mäklare (estate agent) recommends,
• hire them before the bidding round, not after your bid has been accepted,
• if anything looks suspicious, order an extended investigation with moisture measurement, thermal imaging or a crawl space inspection (an extra 1,500 to 4,000 SEK),
• go through the report on the same day with the mäklare and, if possible, the seller, before the köpekontrakt (purchase contract) is signed.

In Bohuslän and along the west coast there are some very good besiktningsmän who specialise in old wooden houses and stugor on granite foundations. If you're searching without a local recommendation, you'll find most certified inspectors via sbr.se or anticimex.se.

Dolda fel-försäkring: insurance that isn't what it seems

Many sellers take out a dolda fel-försäkring (seller's insurance against hidden defects) before the sale. It typically costs 5,000 to 15,000 SEK and runs for five to ten years. In listings, it's presented as a selling point.

What matters here, and is rarely explained in any language other than Swedish: this insurance protects the seller, not you. It pays for the seller's compensation if you claim for dolda fel and succeed. It doesn't replace an inspection, it doesn't replace disclosure, and it changes nothing about your undersökningsplikt.

In practice, dolda fel-försäkringar are also full of exclusions. Depending on the provider, damage caused by moisture, mould or wood-boring pests is partly or completely excluded. A seller who advertises one prominently is often signalling self-interest more than real security for you.

Three habits from home that get expensive in Sweden

After three years in Gothenburg and many conversations with buyers who moved here, I keep seeing three recurring mistakes:

First: trusting the agent's description. The Swedish mäklare is legally obliged to be neutral, but financially represents the seller. Their objektbeskrivning (property description) is a sales brochure, not a survey. If you read it like a contract drawn up by a German notary, you'll miss what matters. I've described how the bidding process around it works in detail in my article on budgivning.

Second: expecting the seller to have a duty to disclose. In Germany, for example, the seller has to disclose defects they know about. In Sweden the duty is narrower: the seller is only liable if they specifically knew about the problem and it was a dolt fel. Concealed-but-detectable becomes your problem.

Third: too little time for the viewing. In a hot market, the mäklare pushes for a quick decision: "there are already two other bidders". If you let that dynamic push you into the bidding round without having hired a besiktningsman, you give up your most important protection. My advice: better to view three fewer properties and build a besiktningsman firmly into your plans for every serious candidate.

A practical viewing checklist

If you go to a first viewing without a besiktningsman (which is normal at the initial stage), you should at least check these points:

• Crawl space or cellar: smell (musty = possible damp), visible mould, water marks on the floor, condition of the insulation.
• Loft: marks on the rafters (dark patches = past moisture), condition of the vapour barrier, smell.
• Windows: double or triple glazing, condensation between the panes (seal failure), condition of the wooden frames on the outside.
• Bathroom: age of the waterproofing layer (tätskikt, typical lifespan 20 to 30 years), sealing around the bath or shower, smell from the floor drain.
• Heating: with fjärrvärme (district heating), ask for the maintenance log; with bergvärme (ground-source heat pump), the borehole depth and age of the pump; with direktverkande el (direct electric heating), ask for the heating costs for the last two years.
• Roof: age, material, visible moss or warping, condition of the chimney (sotning and brandskyddskontroll; see also my article on sotning).
• Additionally for a bostadsrätt: the förening's (housing association's) årsredovisning (annual report), the state of the renovation fund, planned renovations (see checking a bostadsrättsförening).

If even one of these points gives you a bad feeling: move on and hire a besiktningsman.

What should be in the köpekontrakt

Many buyers negotiate the price but not the terms. There are two clauses in the köpekontrakt that buyers from abroad routinely pay too little attention to:

• Friskrivningsklausul: a clause in which the seller excludes all their own liability ("Säljaren friskriver sig från ansvar för faktiska fel och brister"). If a clause like this is in the contract, even the liability for dolda fel falls away. You should not accept it, or reduce the purchase price accordingly.
• Besiktningsklausul: a clause that makes the deal conditional on a satisfactory inspection ("Köpet är villkorat av godkänd besiktning"). In the heat of bidding it's often hard to get, but it's the most valuable safety net you can negotiate, especially with older houses.

What is definitely worth it: having your own lawyer look at the köpekontrakt before you sign. Familjens jurist and a few specialised law firms in Gothenburg do this for a flat fee of 1,500 to 3,000 SEK. Not much money for a much better night's sleep.

My practical advice

If you're thinking about buying a house in Gothenburg, Bohuslän or anywhere else in Sweden right now, here are three things to take away:

First: take the undersökningsplikt seriously, but don't let it paralyse you. It's a clear system, not an ambush. If you know how the Swedish game works, you can play it.

Second: always hire an independent besiktningsman. Measured against the risk, the roughly 9,600 to 10,800 SEK is the cheapest insurance you'll find when buying a house, cheaper than any dolda fel-försäkring.

Third: the first time, it pays to have someone with you. For two years now I've been helping buyers in Gothenburg and on the west coast, from the first Hemnet shortlist through the viewing to the köpekontrakt. If you're at that point and unsure whether your property is the right one, book a free intro call: 15 minutes, no obligation. We'll go through it together.

Sweden is a fair country for buyers who understand the system. Those who don't end up paying, often only two years later, when the crawl space starts to smell.

Do you have a specific property in mind and want to know what to look for before the viewing? Send me the Hemnet link. I'll look at the avgift (monthly fee), the förening and the realistic final price range, and write you a two-page summary in English or German. Property check, €149.

Buying a house in Sweden: practical guide: the in-depth guide to this topic is currently available in German. View it in the shop.

I'm Sebastian Schiefner, a photographer in Gothenburg, and I help people who are moving to West Sweden with finding a home and buying property. Free intro call.