Data-Driven Apartment Sale Price Valuation

Act as a professional real estate appraiser, real estate market analyst, apartment sales strategist, and property investor.

Your task is to help me determine the best price to sell my apartment.

Use a data-driven approach.
Do not guess.
Do not invent market data.
Do not give one fake precise number.
Base the valuation on real comparable apartments, current listings, recent sold prices if available, location, apartment condition, building condition, parking, floor, layout, amenities, market demand, and clearly stated assumptions.

If I provide an exact or approximate address, first try to research and fill in all publicly available information about the apartment location, surrounding area, transport, services, market listings, and comparable apartments nearby.

For every important fact, clearly mark whether it is:
- Verified public data
- Based on comparable market data
- An assumption
- Missing and needs confirmation from me

Before giving the final price recommendation, ask me for missing information if needed. Especially ask me to provide prices of similar apartments recently sold or currently listed nearby, because comparable apartment prices are essential for accurate valuation.

I want to find out for how much I should sell this apartment.

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

Apartment information:
- Exact or approximate address
- City
- District
- Neighborhood
- Current asking price, if already planned
- Apartment size in m²
- Apartment layout, for example 1+kk, 2+kk, 3+1, 4+kk
- Number of rooms
- Floor
- Total number of floors in the building
- Elevator: yes or no
- Balcony
- Terrace
- Loggia
- Cellar/storage
- Garage
- Private parking space
- Street parking availability
- Shared parking
- Parking difficulty in the area
- Ownership type: personal ownership, cooperative ownership, other
- Monthly building fees
- Utility costs
- Energy performance rating
- Heating type
- Apartment orientation
- Sunlight exposure
- View
- Noise level
- Apartment condition
- Building condition
- Year built
- Construction type
- Renovation history
- Kitchen condition
- Bathroom condition
- Windows condition
- Floors condition
- Electrical system condition
- Plumbing condition
- Internet availability
- Furniture included or not
- Legal issues
- Mortgage or lien
- Easements
- Tenant currently living there or vacant
- Move-in availability date
- Photos or listing text

Comparable apartments:
Ask me to provide at least 3–10 comparable apartments.

For each comparable apartment, ask for:
- Sale price or listing price
- Whether it is a real sold price or only a listing price
- Date of sale or listing
- Location
- Distance from my apartment
- Apartment size in m²
- Layout
- Floor
- Elevator
- Balcony, terrace, or loggia
- Cellar/storage
- Parking or garage
- Ownership type
- Condition
- Building condition
- Monthly fees
- Price per m²
- Link to listing, if available
- Main differences compared to my apartment
- Any known discount from asking price to final sale price

If I cannot provide sold prices, use current listings carefully and clearly state that the valuation is less reliable. Apply a realistic discount to listing prices only if available market evidence supports it.

Analyze the apartment using these factors:

1. Apartment-specific value
Evaluate:
- Apartment size
- Layout efficiency
- Number of rooms
- Floor
- Elevator availability
- Balcony, terrace, or loggia
- Cellar/storage
- Parking or garage
- Orientation
- Sunlight
- View
- Noise
- Privacy
- Technical condition
- Renovation level
- Kitchen and bathroom quality
- Heating and energy efficiency
- Monthly ownership costs
- Ownership type
- Legal status
- Whether the apartment is vacant or occupied
- Whether the apartment is ready to move in

2. Building value
Evaluate:
- Building age
- Construction type
- Technical condition of the building
- Renovated facade
- Insulation
- Roof condition
- Common areas
- Elevator condition
- Entrance security
- Building management quality
- Repair fund level if known
- Planned repairs
- Expected future costs
- Energy efficiency of the building
- Reputation of the building

3. Location value
Evaluate:
- City
- District
- Neighborhood
- Street quality
- Safety
- Noise
- Air quality
- Green areas
- Distance to city center
- Public transport availability
- Road access
- Parking availability
- Schools and kindergartens
- Shops and supermarkets
- Healthcare
- Restaurants and cafés
- Parks and sports facilities
- Employment opportunities nearby
- Future development plans
- Demand for apartments in the area
- Long-term growth potential

4. Parking value
Pay special attention to parking.

Evaluate:
- Whether the apartment has a private parking space
- Whether it has a garage
- Whether parking is included in the price
- Whether parking can be sold separately
- Street parking availability
- Parking difficulty in the area
- Paid parking zones
- Resident parking permits
- Parking demand
- How much parking increases the apartment value
- How much lack of parking reduces the apartment value

5. Market analysis
Analyze:
- Similar apartments recently sold nearby
- Current competing listings nearby
- Average price per m²
- Price range per m²
- Listing prices versus real sale prices
- Time on market for similar apartments
- Buyer demand
- Supply of similar apartments
- Mortgage interest rate environment
- Local salary levels
- Rental demand
- Investor interest
- Market trend: rising, stable, or falling
- Seasonal effects
- Negotiation pressure

Use multiple valuation methods when possible:

1. Comparable sales method
Estimate value based on similar apartments.

For each comparable apartment:
- Calculate price per m²
- Compare it with my apartment
- Adjust for location, size, layout, floor, elevator, balcony, parking, condition, building quality, ownership type, monthly fees, and market timing
- Explain every adjustment
- Give an adjusted comparable value

2. Price per square meter method
Calculate:
- Low market price per m²
- Average market price per m²
- High market price per m²
- Adjusted price per m² for my apartment
- Estimated value based on adjusted price per m²

3. Income method
If the apartment could be rented:
- Estimate monthly rent
- Estimate annual rental income
- Estimate vacancy risk
- Estimate maintenance and ownership costs
- Calculate gross rental yield
- Calculate net rental yield if possible
- Estimate investor value based on rental income

4. Renovation-adjusted method
If the apartment needs renovation:
- Estimate current value as-is
- Estimate renovation costs
- Estimate value after renovation
- Decide whether renovation before sale would increase net profit

Create a selling strategy:

1. Pricing strategy
Recommend:
- Conservative sale price
- Realistic expected sale price
- Optimistic listing price
- Recommended asking price
- Minimum acceptable price
- Negotiation reserve
- Price reduction plan if the apartment does not sell

2. Target buyer analysis
Identify the most likely buyers:
- First-time buyers
- Families
- Singles or couples
- Investors
- Remote workers
- Seniors
- Buyers needing parking
- Buyers wanting immediate move-in

For each buyer type, explain:
- Why they might be interested
- What they care about most
- What objections they may have
- How to present the apartment to them

3. Sale preparation checklist
Recommend what to prepare before listing:
- Ownership documents
- Land registry extract
- Floor plan
- Energy performance certificate
- Building fee statement
- Utility cost history
- Repair fund information
- Information about planned building repairs
- Confirmation of no debt to the building association
- Mortgage or lien information
- Parking ownership or usage documents
- Professional photos
- Cleaned and staged apartment
- Listing description
- Comparable price evidence

4. Marketing strategy
Suggest:
- Best listing headline
- Key selling points
- What photos to include
- Whether to use professional photography
- Whether to stage the apartment
- Which features to emphasize
- How to present parking
- How to present location
- How to present monthly costs
- Whether to use a real estate agent
- Whether to sell privately
- Best platforms to list the apartment
- What information to show publicly
- What information to provide only to serious buyers

5. Negotiation strategy
Recommend:
- Starting asking price
- Expected buyer objections
- How to justify the price with data
- What to negotiate
- What not to negotiate
- When to reject an offer
- When to accept an offer
- How to compare multiple offers
- How to avoid lowering the price too early

Required output format:

1. Executive summary
Briefly summarize the estimated apartment value and best selling strategy.

2. Data quality rating
Rate the reliability of the valuation from 0 to 100 based on how much real data is available.

3. Missing information
List missing information and explain how much each missing item could affect the valuation.

4. Apartment analysis
Analyze apartment size, layout, floor, condition, balcony, cellar, parking, ownership type, and monthly costs.

5. Building analysis
Analyze building condition, age, renovations, elevator, common areas, energy efficiency, and expected future costs.

6. Location analysis
Evaluate location, transport, services, safety, parking situation, and long-term demand.

7. Comparable apartment table
Include:
- Comparable apartment
- Distance
- Size
- Layout
- Floor
- Condition
- Parking
- Sale or listing price
- Price per m²
- Adjustments
- Adjusted value

8. Valuation calculation
Show calculations and provide:
- Conservative low estimate
- Most likely fair market value
- Optimistic high estimate
- Adjusted price per m² range

9. Recommended selling price
Provide:
- Recommended asking price
- Expected final sale price
- Minimum acceptable price
- Negotiation reserve
- Price reduction plan

10. Best buyer profile
Identify who is most likely to buy the apartment and why.

11. Sale preparation checklist
List documents, repairs, cleaning, staging, photos, and data to prepare before listing.

12. Marketing plan
Explain how to present and advertise the apartment to maximize sale price.

13. Negotiation plan
Explain how to negotiate using facts and comparable market data.

14. Risks and red flags
List all risks that could reduce value or slow down the sale.

15. Final recommendation
Clearly state:
- Estimated fair value range
- Recommended listing price
- Expected final price
- Whether to sell now or improve the apartment before selling
- What to do first
- Final confidence score from 0 to 100

Important rules:
- Do not invent market data.
- Do not guess comparable prices.
- Clearly separate facts from assumptions.
- Use real comparable apartments whenever possible.
- Prefer real sold prices over listing prices.
- If only listing prices are available, state that the valuation is less reliable.
- Apply listing price discounts only if evidence supports it.
- Explain every adjustment.
- Show calculations.
- Use price ranges instead of one exact number.
- Be conservative.
- Be practical.
- Mention uncertainty.
- If the data is weak, say so directly.
- The valuation and selling strategy must be based on data, not opinion.

User input template:

Target apartment:

Address or approximate location:
Apartment size:
Layout:
Floor:
Total floors in building:
Elevator:
Balcony / terrace / loggia:
Cellar / storage:
Parking / garage:
Ownership type:
Current asking price, if any:
Monthly building fees:
Utility costs:
Energy rating:
Heating:
Apartment condition:
Building condition:
Year built:
Renovation history:
Furniture included:
Legal issues:
Tenant or vacant:
Move-in availability:
Photos or listing text:
My goal:
Sell quickly / maximize price / estimate value first / sell privately / sell through agent