The load-bearing structures of the buildings rest on a reinforced concrete shallow foundation. The building frame is prefabricated, and the external walls are made of three-layer reinforced concrete panels. The intermediate floors consist of reinforced concrete hollow-core slabs. To reduce impact sound, mineral wool insulation and a concrete levelling layer are installed above the panels.

The buildings feature flat roofs with a rolled roofing material. Next to the buildings, a two-storey parking house with monolithic concrete structure has been constructed, open on the sides.

All internal walls between apartments and between apartments and staircases are made of 200 mm reinforced concrete panels. Bathroom walls and service shafts are constructed from lightweight blocks.

Internal apartment walls are metal-framed gypsum board partitions with mineral wool insulation. Walls intended for kitchen furniture installation are reinforced with OSB boards or plywood installed beneath the gypsum board.

All buildings have stairwells equipped with lifts.

The calculated energy performance of the Paekalda 15, 17, 19 and 21 buildings corresponds to energy class A. Solar panels are installed on the roofs of the buildings.

The balconies are constructed from prefabricated reinforced concrete slabs. Balcony railings are made of glass with an aluminium profile support system, and the flooring is smooth concrete. The balcony structure uses painted aluminium profiles. The railings are designed to allow the addition of upper retractable glazing.

On floors 2–7, apartment ceiling heights are 2.8 metres, with 2.4 metres in entrance halls and bathrooms. On the top, eighth floor, ceilings are higher at 3.0 metres.

The apartment buildings feature single-frame PVC windows, partially openable and fitted with triple glazing units. The main entrance doors of the buildings are glass-panel doors in metal frames.

Apartment entrance doors are finished with oak veneer, with matching veneered door frames. Interior doors are standard-height smooth veneered or painted panel doors, depending on the selected interior finishing package. On the 8th floor, apartment doors are 2.3 metres high. In the Paekalda 15 and 17 buildings, all apartment doors are 2.3 metres high.

The residential buildings are supplied with district heating and equipped with their own heat substation. Homes feature comfortable and energy-efficient underfloor heating, with heating distribution manifolds installed in the hallway cabinet niche or storage room. Heating costs are calculated per square metre, and no individual heat meters are installed in the apartments.

Apartments are equipped with autonomous ventilation systems with heat recovery and balanced supply and exhaust airflow. Kitchen extractor hoods are connected to a separate ventilation shaft.

In the Paekalda 19 and 21 buildings, cooling installation readiness is provided for living rooms on the 7th and 8th floors, and additionally for one bedroom in three-room and larger apartments.

In the Paekalda 15 and 17 buildings, cooling readiness is provided in all apartments. On floors 1–3, readiness is provided in the living room only, while on floors 4–8, three-room and larger apartments also have readiness for one additional bedroom.

Cooling installation readiness includes piping and cabling from the planned indoor unit location within the apartment to the planned outdoor unit location on the roof.

Electricity meters for the homes are installed in the stairwell distribution cabinets. Each apartment has a consumer unit with circuit breakers and a low-voltage section. Electricity readings are transmitted via remote metering. Homes are equipped with sockets and switches, and sanitary rooms and hallways also include lighting fixtures.

An optical cable for internet and TV services is installed up to the apartment distribution cabinet. Internal apartment wiring uses CAT6 cabling, enabling high-speed data transmission. Each room is equipped with a modular outlet for telephone and/or internet connection.

An intercom system is installed in the entrance hall.

The apartment buildings are connected to the city of Tallinn’s water supply and sewage network. Domestic hot water is produced locally in the building’s heat substation. Water meter readings are collected via remote metering, automatically transmitted to the property manager’s database.

There are children’s playgrounds next to the buildings. The play areas feature a rubber safety surface, and the sandpits are surrounded by wooden edging. Bicycle racks are provided for residents and visitors arriving by bike.

In the colourful and diverse courtyard areas, landscape architect Piret Kümmel has integrated new design solutions with previously established elements. The courtyards are home to a variety of trees and shrubs, including apple trees, rowans, bird cherries, lilacs, mock oranges, spireas, cinquefoils and currants.

The building entrances are slightly elevated from street level. The vertical layout is designed so that residents can move from the building to the ground-floor parking area, the playground, and the Paekalda street sidewalk without using stairs.

The underground (–1) parking level is easily accessible by lift. The lift stops at the entrance level and is aligned with the entrance, making it convenient for people with reduced mobility.