Experience selling a condominium

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Selling a condominium is a once-in-a-lifetime event for most people – and that’s why it’s so prone to errors. Those who learn from the typical mistakes in apartment sales of others can save a lot of money: often five-figure amounts. The following seven case studies come from our advisory practice, anonymized and with key details altered. Each story shows a typical stumbling block – from the wrong asking price to missing documents and the strategically wrong time to sell – and how it was resolved.

Key Facts -

Why the experiences of other sellers are so valuable

Overview of the 7 Experience Reports

“Avoiding the price trap” – Experience #1

The Situation

The Mistake

The Solution

The Result

Key details of the apartment

“Structured preparation beats hope selling” – Experience #2

The situation

The mistake

The solution

The result

Key details of the apartment

“Photos and descriptions decide in 3 seconds” – Experience #3

The situation

The mistake

The solution

The Result

Key details of the apartment

“Forgotten documents – almost lost the buyer” – Experience #4

The situation

The mistake

The Solution

The result

Key details of the apartment

“Negotiating needs to be learned” – Experience #5

The situation

The mistake

The solution

The result

Key details of the apartment

“When friends draft the purchase contract” – Experience #6

The situation

The mistake

The solution

The Result

Key details of the apartment

“Season and timing decide” – Experience #7

The situation

The mistake

The Solution

The Result

Why the experiences of other sellers are so valuable

Over 80 percent of private individuals sell only one property in their lifetime. There’s no second chance to build up routine. That’s exactly where case studies come in: they don’t replace professional guidance, but they make visible where the most common – and costly – mistakes lie.

Most people sell exactly one property in their lifetime. That’s why gaining experience is so valuable. Over 67 percent ultimately decide to use a real estate agent, and in big cities, even 80 percent hire an experienced real estate agent.

Overview of the 7 Experience Reports

#	Location	Living area	Core problem	Solution	Result
1	Frechen (NRW)	72 m²	Offer price too high	Market value adjustment	Sold after 11 weeks
2	Hamburg	85 m²	Visual defects	Tailored renovation	+18,000 € additional profit
3	Cologne	50 m²	Poor photos/expose	Professional photographer	5x more inquiries
4	Stuttgart	110 m²	Missing documents	Complete file	Buyer saved
5	Berlin Kreuzberg	65 m²	Weak negotiation	Coaching/advice	+22,000 € realized
6	Munich	78 m²	Amateurish contract	Notary & Lawyer	Legal security
7	Dusseldorf	90 m²	Wrong timing	Postponed to spring	+9 % selling price

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“Avoiding the price trap” – Experience #1

Karin M., 32 years, Frechen (NRW)

The Situation

Karin estimated the value of her 4-bedroom apartment with park view based on listings of comparable apartments in the neighborhood. She listed it for 419,000 euros – oriented on the highest offer in the area – and expected quick inquiries.

The Mistake

In the first six weeks, only two viewing requests came in, both without serious purchase interest. What Karin didn’t know: Listing prices are not selling prices. In the same period, comparable properties in Frechen had actually been notarially sold for 360,000 to 380,000 euros.

The Solution

A professional real estate appraisal based on actual selling prices (expert committee data) provided a realistic market value of 372,000 euros. Adjusting the offer price to 379,000 euros led to six serious interested parties within ten days.

The Result

Selling price final: 375,000 euros
Marketing duration after price adjustment: 11 weeks
Learning effect: Ad prices ≠ market prices

Key details of the apartment

72 m², 4 rooms
Frechen in NRW, built in 1998
Balcony with view of the park
Modern kitchen, well-maintained condition
Price per square meter achieved: 5,208 Euro

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“Structured preparation beats hope selling” – Experience #2

Hans W.-M., 45 years old, Hamburg

The situation

The central 85 m² apartment had been occupied for twelve years. Scratches on the parquet, yellowed walls, a faulty socket, a chipped tile in the bathroom – each defect on its own small, but together very effective.

The mistake

Hans advertised without preparation. The first three offers were 25,000 to 35,000 Euro below his asking price. The reason: buyers always calculate renovation costs more generously than they actually occur.

The solution

Investment of 4,200 Euro in painting, minor repairs and professional final cleaning. In addition, a light home staging with rental furniture (980 Euro for six weeks).

The result

Total investment: approx. 5,200 Euro
Higher profit compared to initial offers: around 18,000 Euro
Return on Renovation: over 240 percent

Key details of the apartment

85 m², 2 bedrooms
Central location in Hamburg-Eimsbüttel
Spacious living room, high ceilings
High-quality furnishings after renovation
Near shopping facilities and U-Bahn

“Photos and descriptions decide in 3 seconds” – Experience #3

Murat T., 28 years old, Cologne

The situation

First condominium, compact apartment in the inner city of Cologne. Murat advertised with twelve mobile phone photos and a two-sentence description text.

The mistake

In a study, buyers look at an online ad for an average of 8 seconds before scrolling further. Poor photos are clicked away within three seconds. Murat’s ad generated only seven inquiries in two weeks, none of which were serious.

The solution

Hiring a real estate photographer (520 Euro) and creating a structured listing with floor plan, location description, energy ratings, and a detailed text about the living environment.

The Result

Requests per week: before 3.5 – after 19
Selling price: 285,000 Euro (5,700 Euro/m²)
Marketing duration: 4 weeks

Key details of the apartment

50 m² apartment, 1 bedroom
Inner city location in Cologne-Neustadt
Year of construction 2008, very energy efficient
Underground garage parking space included

“Forgotten documents – almost lost the buyer” – Experience #4

Aurora G., 50 years old, Stuttgart

The situation

Maisonette on the outskirts of Stuttgart, inherited from the mother. Aurora wanted to sell quickly and underestimated the bureaucratic effort.

The mistake

The first serious buyer was missing practically all relevant documents: current land register extract, division declaration, valid energy certificate, housing benefit statements from the last three years, minutes of the homeowners’ meetings. The buyer set a deadline of 14 days – Aurora lost two weeks with hectic calls to the management and land registry office.

The Solution

Creation of a complete sales folder according to a checklist:

Land register extract (not older than 3 months)
Division declaration with division plan
Energy certificate (demand or consumption certificate)
Rental allowance statements for 3 years retroactively
Minutes of the last three homeowners’ meetings
Wirtschaftsplan des laufenden Jahres
Proof of maintenance reserve
Floor plans and living area calculation
Possibly rental agreement and rental receipts

The result

Buyer remained – narrowly saved
Verkaufspreis: 489.000 Euro
Learning effect: Obtain documents BEFORE the ad placement

Key details of the apartment

110 m² maisonette, 3 bedrooms
Suburban area of Stuttgart
Large balcony with view
Needs renovation (bathrooms, heating)
Year of construction 1976, ETW since 1992

“Negotiating needs to be learned” – Experience #5

Julia R. B., 37 years old, Berlin

The situation

Loft apartment in Berlin-Kreuzberg, high ceilings, industrial style. Ad listed at 545,000 Euro, quick buyer interest.

The mistake

During the first negotiation meeting, Julia was convinced to agree on a price of 498,000 Euro – almost 9 percent below her expectations. Classic pressure tactics from the buyer (“I have two other properties”, “Financing only until the end of the month”) had an effect.

The solution

Withdrawal from the conversation, commissioning a negotiation coaching session through a real estate agent. With the next buyer: credit check BEFORE the negotiation, defined price floor (520,000 Euro), written offer submission.

The result

Final selling price: 532,000 Euro
Difference to the first “emergency sale”: 34,000 Euro
Learning effect: Negotiations are preparation – not talent

Key details of the apartment

65 m², open space concept
Industrial style in Berlin Kreuzberg
High ceilings, large windows
Creative workspace
Near galleries and cafes

“When friends draft the purchase contract” – Experience #6

Thomas F., 60 years old, Munich

The situation

Thomas wanted to save costs and had a friend who is a tax advisor (not a notary, not a lawyer) prepare the draft purchase contract.

The mistake

In Germany, EVERY real estate purchase contract MUST be notarized (§ 311b BGB). Privately drafted contracts are invalid. In addition, there were unclear regulations regarding encumbrances in the land register, missing clauses regarding preliminary registration of the transfer of ownership, and no regulations regarding movable items (built-in kitchen).

The solution

Engagement of a qualified notary (costs approx. 1.5 % of the purchase price, usually borne by the buyer) and simultaneously a real estate lawyer to review the notarial draft (fee approx. 800 Euro).

The Result

Legally secure sale at 612,000 Euro
Clearly regulated handover and rights to claim defects
Lesson learned: NEVER save on the purchase contract

Key details of the apartment

78 m², 3 rooms
Munich-Sendling, old building built in 1932
Renovated bathrooms, protected facade
Underground garage parking space
Price per square meter achieved: 7,846 Euro

“Season and timing decide” – Experience #7

Samuel C., 29 years old, Düsseldorf

The situation

Samuel inherited a penthouse with a rooftop terrace and wanted to sell it quickly. Advertised in November.

The mistake

November and December are statistically the weakest sales months for premium apartments. Buyers think tax-related (end of the year, bonus only in the following year) and terraced apartments are clearly less appreciated during the rainy weather period. Result: three inquiries in six weeks.

The Solution

Shifting the marketing to February/March. Using the waiting period for: professional drone shots of the rooftop terrace on sunny days, renovation of the bathroom, procurement of all documents.