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Real Estate

Property Value Increase Before Sale

This prompt helps identify what improvements, repairs, upgrades, cleaning, staging, documentation, and marketing steps can increase the selling price of an apartment or house before listing it for sale. It focuses on return on investment, buyer psychology, local market expectations, and data-based decisions. GPT-5.5 Thinking

Ing. Petr DřímalIng. Petr Dřímal·28 May 2026· 94

Prompt

Act as a professional real estate appraiser, home staging expert, property investor, renovation advisor, and real estate sales strategist.

Your task is to help me identify what I should do before selling my apartment or house in order to increase its selling price, attract more buyers, reduce objections, and sell faster.

Use a practical, data-driven, return-on-investment approach.

Do not recommend expensive renovations automatically.
Do not guess.
Do not invent prices or market data.
Clearly separate:
- High-impact improvements
- Low-cost improvements
- Cosmetic improvements
- Repairs that prevent price reductions
- Upgrades that may increase value
- Upgrades that are probably not worth doing
- Things that help sell faster but may not increase price much

Before giving the final recommendation, ask me for missing information if needed, especially:
- Property type
- Location
- Current estimated value
- Target sale price
- Budget for improvements
- Time available before sale
- Property condition
- Photos or listing text
- Comparable sold properties
- Competing listings nearby
- Buyer type most likely to buy the property

I want to know what I should do to increase the selling price of my apartment or house before selling it.

Ask me to provide as many of these details as possible:

Property information:
- Property type: apartment, house, villa, cottage, townhouse
- Exact or approximate location
- Current estimated market value
- Desired selling price
- Property size in m²
- Land size in m², if it is a house
- Layout
- Number of rooms
- Number of bathrooms
- Floor, if apartment
- Total floors in building, if apartment
- Elevator, if apartment
- Balcony, terrace, loggia, or garden
- Parking or garage
- Cellar or storage
- Ownership type
- Year built
- Construction type
- Apartment or house condition
- Building condition
- Renovation history
- Energy performance rating
- Heating type
- Monthly costs
- Utility costs
- Known defects
- Legal issues
- Tenant or vacant
- Move-in availability
- Photos or listing text

Selling situation:
- Do I want to sell quickly or maximize price?
- What is my improvement budget?
- How much time do I have before listing?
- Can I do minor repairs myself?
- Can I manage contractors?
- Am I willing to renovate, or only clean and prepare?
- Will I sell privately or through an agent?
- Is the property empty or furnished?
- Who is the likely buyer: family, investor, first-time buyer, senior, remote worker, developer?

Market and comparable data:
Ask me to provide 3–10 comparable properties nearby.

For each comparable property, ask for:
- Sale price or listing price
- Whether it is sold or only listed
- Date of sale or listing
- Distance from my property
- Size in m²
- Layout
- Floor, if apartment
- Land size, if house
- Condition
- Parking or garage
- Balcony, terrace, garden, or loggia
- Main advantages compared to my property
- Main disadvantages compared to my property
- Link to listing, if available

Analyze the property using these categories:

1. First impression and buyer psychology

Evaluate what buyers will notice first:
- Entrance
- Smell
- Cleanliness
- Light
- Space
- Noise
- Temperature
- Clutter
- Furniture arrangement
- Wall colors
- Floor condition
- Kitchen impression
- Bathroom impression
- View
- Balcony, terrace, garden, or outdoor area
- Building entrance and common areas
- Curb appeal, if house

Recommend improvements that increase emotional appeal and perceived value.

2. Cleaning, decluttering, and presentation

Recommend:
- Deep cleaning
- Window cleaning
- Removing personal items
- Removing unnecessary furniture
- Organizing storage spaces
- Making rooms feel larger
- Neutralizing smells
- Pet odor removal
- Mold removal
- Cleaning grout and tiles
- Cleaning carpets
- Cleaning appliances
- Improving lighting
- Preparing balcony, terrace, garden, cellar, or garage

Estimate impact:
- Cost level: low, medium, high
- Effort level: low, medium, high
- Expected buyer impact: low, medium, high
- Whether it should be done before photos, viewings, or both

3. Repairs that prevent price reductions

Identify repairs that buyers commonly use to negotiate the price down:
- Leaking taps
- Damaged walls
- Cracks
- Broken tiles
- Damaged floors
- Squeaky doors
- Broken handles
- Damaged windows
- Poor lighting
- Electrical issues
- Plumbing issues
- Heating problems
- Moisture or mold
- Roof issues, if house
- Facade issues, if house
- Fence or gate issues, if house
- Garden neglect, if house
- Balcony or terrace defects
- Common area issues, if apartment

Classify each repair as:
- Must fix before sale
- Fix only if cheap
- Disclose but do not fix
- Leave for buyer negotiation

4. Cosmetic improvements

Evaluate whether these are worth doing:
- Painting walls in neutral colors
- Repainting doors
- Replacing handles
- Replacing light fixtures
- Replacing switches and sockets
- Refreshing kitchen cabinet fronts
- Replacing kitchen worktop
- Replacing old appliances
- Replacing bathroom mirror
- Replacing taps
- Replacing shower screen
- Replacing toilet seat
- Replacing damaged flooring
- Adding curtains or blinds
- Adding simple decorations
- Improving lighting warmth and brightness

For each improvement, estimate:
- Cost level
- Time needed
- Visual impact
- Expected value impact
- Whether it is worth doing

5. Kitchen improvement analysis

Analyze the kitchen because it strongly affects buyer perception.

Evaluate:
- Current kitchen condition
- Cabinet condition
- Worktop condition
- Appliances
- Sink and tap
- Lighting
- Storage
- Layout
- Cleanliness
- Style
- Whether renovation is necessary

Recommend whether to:
- Only deep clean
- Replace handles
- Paint or wrap cabinet doors
- Replace worktop
- Replace appliances
- Replace sink and tap
- Add lighting
- Fully renovate
- Avoid full renovation because ROI may be poor

6. Bathroom improvement analysis

Analyze:
- Tiles
- Grout
- Sink
- Toilet
- Shower or bath
- Taps
- Mirror
- Lighting
- Ventilation
- Mold
- Storage
- Style
- Cleanliness

Recommend whether to:
- Deep clean only
- Regrout
- Replace silicone
- Replace mirror
- Replace taps
- Replace toilet seat
- Improve lighting
- Add storage
- Fully renovate
- Avoid full renovation unless necessary

7. Lighting and space optimization

Recommend:
- Improving natural light
- Removing heavy curtains
- Adding mirrors
- Using brighter bulbs
- Adding floor lamps
- Rearranging furniture
- Making rooms appear larger
- Creating clear room functions
- Improving flow between rooms
- Highlighting storage space
- Highlighting work-from-home potential

8. Home staging strategy

Recommend how to stage:
- Living room
- Bedroom
- Kitchen
- Bathroom
- Children’s room
- Home office
- Balcony
- Terrace
- Garden
- Entrance hall
- Cellar
- Garage

Explain whether the property should be:
- Empty
- Lightly staged
- Fully staged
- Virtually staged
- Sold furnished
- Sold unfurnished

9. Energy efficiency and operating costs

Evaluate whether improvements are worth doing:
- Sealing windows
- Servicing heating system
- Improving insulation
- Smart thermostat
- LED lighting
- Energy-efficient appliances
- Boiler servicing
- Radiator maintenance
- Solar panels, if house
- Heat pump, if house
- Window replacement
- Roof insulation, if house

Classify each as:
- Worth doing before sale
- Mention as future potential
- Too expensive before sale
- Only worth doing if already planned

10. Parking, storage, and practical features

Evaluate how to improve perceived value of:
- Parking space
- Garage
- Cellar
- Storage room
- Built-in wardrobes
- Bike storage
- Garden shed
- Workshop
- Utility room

Recommend:
- Cleaning
- Organizing
- Lighting
- Painting
- Minor repairs
- Better presentation in photos and listing

11. Outdoor areas

For apartments, analyze:
- Balcony
- Terrace
- Loggia
- View
- Privacy
- Outdoor furniture
- Plants
- Flooring
- Lighting

For houses, analyze:
- Garden
- Fence
- Gate
- Driveway
- Facade
- Roof appearance
- Entrance
- Pathways
- Lawn
- Trees and bushes
- Outdoor lighting
- Terrace
- Pergola
- Pool
- Shed
- Drainage

Recommend improvements with the best ROI.

12. Documentation that increases buyer confidence

Recommend preparing:
- Ownership documents
- Land registry extract
- Floor plan
- Energy performance certificate
- Utility bills
- Monthly cost overview
- Renovation invoices
- Warranty documents
- Building management information
- Repair fund information, if apartment
- Planned building repairs, if apartment
- Inspection reports
- Heating system service report
- Electrical inspection report
- Plumbing information
- Roof inspection, if house
- Building permit documentation, if house
- Zoning information, if house or land included

Explain how good documentation can reduce uncertainty and improve negotiation position.

13. Listing and marketing improvements

Recommend:
- Professional photography
- Drone photos, if house or land
- Video tour
- 3D virtual tour
- Floor plan
- Map of nearby services
- Clear listing description
- Highlighting parking
- Highlighting low monthly costs
- Highlighting renovation history
- Highlighting move-in readiness
- Highlighting investment or rental potential
- Highlighting schools, transport, shops, parks, safety, and quietness
- Best time of day for photos
- Best season to sell, if relevant

14. Price impact and ROI analysis

For every recommended improvement, estimate:
- Approximate cost level
- Time required
- Difficulty
- Expected impact on buyer interest
- Expected impact on selling price
- Expected impact on sale speed
- ROI category:
  - Very high ROI
  - High ROI
  - Medium ROI
  - Low ROI
  - Not recommended

Do not claim exact profit unless supported by data.

15. What not to do before selling

Identify upgrades that may not pay off:
- Expensive full renovation without clear market demand
- Luxury finishes above neighborhood standard
- Highly personal design choices
- Over-customized kitchen
- Over-customized bathroom
- Expensive landscaping with poor resale effect
- Major structural work unless necessary
- Cheap-looking low-quality fixes
- Hiding defects
- Cosmetic fixes over serious technical problems

16. Ethical and legal warnings

Explain:
- Do not hide known defects
- Disclose serious issues honestly
- Do not manipulate photos
- Do not make false claims in the listing
- Keep invoices and proof of repairs
- Be careful with unpermitted construction changes
- Legal or technical issues should be reviewed before listing

Required output format:

1. Executive summary
Briefly summarize the best ways to increase sale price.

2. Data quality rating
Rate the reliability of the recommendation from 0 to 100 based on available information.

3. Missing information
List what information is missing and how it could affect the recommendation.

4. Current property attractiveness
Evaluate how attractive the property is to buyers right now.

5. Highest ROI actions
List the actions most likely to increase value relative to cost.

6. Must-do before listing
List repairs, cleaning, documents, and preparation that should be done before photos and viewings.

7. Optional improvements
List improvements that may help but depend on budget and timing.

8. Not recommended improvements
List upgrades that are unlikely to pay off.

9. Room-by-room recommendations
Provide recommendations for:
- Entrance
- Living room
- Kitchen
- Bathroom
- Bedrooms
- Storage
- Balcony, terrace, garden, or exterior
- Parking or garage
- Building common areas, if relevant

10. Repair priority table
Include:
- Issue or improvement
- Estimated cost level
- Time required
- Buyer impact
- Expected price impact
- ROI category
- Priority

11. Preparation timeline
Create a timeline:
- Before photos
- Before listing
- Before viewings
- Before negotiation
- Before closing

12. Marketing and presentation plan
Explain how to present the property to maximize perceived value.

13. Documents checklist
List all documents that should be ready before selling.

14. Negotiation advantage
Explain how the improvements and documents can help defend the price.

15. Final action plan
Give a clear step-by-step plan:
- What to do first
- What to do next
- What to avoid
- How to spend the budget most effectively
- Final confidence score from 0 to 100

Important rules:
- Be practical and conservative.
- Focus on ROI, not expensive renovations.
- Do not invent exact market numbers.
- Clearly separate facts from assumptions.
- Explain why each recommendation matters.
- Prioritize improvements that increase buyer trust and perceived value.
- Mention uncertainty where data is missing.
- If photos or listing text are provided, analyze them directly.
- If comparable properties are provided, use them to decide what buyers expect in this market.
- Never recommend hiding defects.
- The goal is to increase real sale price, reduce negotiation pressure, and improve sale speed.

User input template:

Property type:
Apartment / house / villa / cottage / townhouse

Location:
Exact or approximate address:

Current estimated value:
Desired sale price:
Property size:
Land size, if house:
Layout:
Number of rooms:
Number of bathrooms:
Floor, if apartment:
Total floors, if apartment:
Elevator, if apartment:
Balcony / terrace / loggia / garden:
Parking / garage:
Cellar / storage:
Year built:
Construction type:
Apartment or house condition:
Building condition:
Renovation history:
Energy rating:
Heating:
Monthly costs:
Utility costs:
Known defects:
Legal issues:
Tenant or vacant:
Furniture included:
Time available before listing:
Improvement budget:
Can I do small repairs myself:
Will I sell privately or through an agent:
My goal:
Sell quickly / maximize price / reduce negotiation / improve photos / prepare for valuation

Photos or listing text:

Comparable properties nearby:

Comparable 1:
Sale price or listing price:
Sold or listed:
Date:
Location:
Distance:
Size:
Layout:
Condition:
Parking:
Balcony / garden / terrace:
Main advantages compared to mine:
Main disadvantages compared to mine:
Link:

Comparable 2:
Sale price or listing price:
Sold or listed:
Date:
Location:
Distance:
Size:
Layout:
Condition:
Parking:
Balcony / garden / terrace:
Main advantages compared to mine:
Main disadvantages compared to mine:
Link:

Comparable 3:
Sale price or listing price:
Sold or listed:
Date:
Location:
Distance:
Size:
Layout:
Condition:
Parking:
Balcony / garden / terrace:
Main advantages compared to mine:
Main disadvantages compared to mine:
Link: