# Specifications for independent home version 01-01-2025

<mark style="color:green;">`POST`</mark> `https://api.altum.ai/wws/01012025`

### **1. Area of rooms**

**Inputs needed:**\
`rooms` (list of room objects with: `surface_area_m2`, `heated`, `cooled`, `is_attic`, `shared_addresses`)\
`toilet_installed_in_bathroom_or_shower`

**Included rooms:**\
Living room, other rooms, kitchen, bathroom, shower room.

**Not included:**\
Sheds, attics, cellars, laundry rooms, utility rooms, garages, storage rooms, corridors, (play) halls, circulation areas, landings.

**Measurement:**\
Measured wall-to-wall at 1.50 m above floor, including cupboards < 2 m², excluding ducts/pipes. Sloped ceilings counted only where height ≥ 1.50 m. Attic rooms count only if accessible by fixed staircase, floor passable, and roof boarded.

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### **2. Surface area of other spaces**

**Inputs needed:**\
`surface_area_other_spaces`\
`attic_space_area`\
`fixed_staircase`

**Included:**\
Utility rooms, laundry rooms, sheds, garages, attics, cellars, fixed cupboards, storage rooms (inside, outside, or under the home).

**Not included:**\
Arcades, corridors, landings, circulation areas.

**Measurement:**\
Same height rule as rooms. Retractable stairs excluded.

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### **3. Heating and cooling**

**Inputs needed:**\
`no_of_heated_rooms`\
`no_of_other_rooms`

Rooms are considered heated if the heating is part of the immovable property. Cooling is counted if installed and fixed.

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### **4. Energy performance**

**Inputs needed:**\
`energy_label_available`\
`energy_label`\
`energy_index`\
`energy_index_existence`\
`house_type`\
`building_year`\
`energy_performance_payment`\
`inner_surface_area`\
`validity`\
`monument` (type: `'national'`, `'municipal'`, `'provincial'`, `'none'`)

**Accepted energy labels:** `'A++++'` to `'G'`.\
**Accepted house types:** `'Eengezinswoning'`, `'Meergezinswoning'`, `'Duplexwoning'`.\
**Accepted validity:** `'definitive'`, `'expired'`, `'estimated'`.

If no valid energy label:

* Uses Energy Index if available.
* Otherwise, uses minimum performance based on building standards of construction year.

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### **5. Kitchen**

**Inputs needed:**\
`kitchen` (list of kitchen objects with: `surface_area_m2`, `heated`, `cooled`, `open_kitchen`, `countertop_length`, `countertop_with_base_cabinets`, `features`)\
`investment_for_kitchen_extra_quality`

Countertop length measured including built-in sinks, excluding hobs. Extra quality allowed if investment is reasonable relative to upgrade level.

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### **6. Sanitary facilities**

**Inputs needed:**\
`sanitary` (list of sanitary objects with: `surface_area_m2`, `heated`, `cooled`, `shower_or_bath_type`, `features`)\
`list_sanitary_facilities`\
`investment_for_bath_extra_quality`\
`investment_for_shower_extra_quality`\
`investment_for_bath_shower_extra_quality`

Accepted facilities: `toilet`, `sink`, `shower`, `bath`, `bath shower`.

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### **7. Separate toilets**

**Inputs needed:**\
`toilet` (list of toilet objects with: `heated`, `cooled`, `wall_hung`, `washbasin_count`)

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### **8. Facilities for disabled persons**

**Inputs needed:**\
`facilities_for_disabled`\
`costs_spent_for_facilities_for_disabled`\
`disabled_people`

Must be tailor-made or statutory subsidized facilities exceeding standard housing provisions.

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### **9. Private and communal outdoor spaces**

**Inputs needed:**\
`outdoor` (list of outdoor objects with: `surface_area_m2`, `private`, `shared_addresses`)\
`carport`\
`extra_quality_above_100m2`

Private spaces: gardens, balconies, terraces (≥ 1.5 m width/depth). French balconies excluded.

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### **10. Parking and charging**

**Inputs needed:**\
`parking` (list of parking objects with: `parking_type`, `surface_area_m2`, `charging_station`, `shared_addresses`)

Parking type determines base value; charging station is counted separately.

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### **11. WOZ value**

**Inputs needed:**\
`woz_value`\
`woz_valuation_year`\
`usable_surface_area`\
`living_area_m2`\
`surface_area_other_spaces`\
`building_year`\
`municipality`\
`like_new_construction`\
`attic_roof_is_boarded`\
`attic_space_area`\
`fixed_staircase`\
`corop_area_amsterdam_or_utrecth`

Minimum WOZ value (2025): €77,582.

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### **12. Renovation**

**Inputs needed:**\
`renovation_expenses`\
`renovation_year`

Applies if investment ≥ €10,000.

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### **13. Special provisions**

**Inputs needed:**\
`care_home`\
`doorbell`

Care home: must have barrier-free access, emergency call system, communal facilities. Doorbell input for small extra provision.

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### **14. National monument**

**Inputs needed:**\
`national_monument`

If part of a national monument as defined in the Heritage Act.