The building in 5 Józefa Bema Street was designed for Tekla Buchholtz, the wife of a Poznań trader, Wojciech Buchholz. The tenement house is an entirely residential building. It is a low, four-storey building with a small garden in front of the building’s entrance. The hight of the building and the greenery in front of it emphasize the intimate character of its location, in spite of the fact that Bema Street is parallel to Gdynia’s main street – Świętojańska.
The inconspicuous tenement house is important for Gdynia’s architecture as this is where the reinforced concrete frame was used for the first time. It was a new technology, which expanded the possibilities of building designing. It was possible to implement the modernist idea of an open façade thanks to this solution.
Tekla Buchholz’s tenement house’s façade is very simple. It is dominated by the divisions which are determined by the separately arranged windows. Four window columns on four floors emphasize the symmetrical and rhythmic character of the façade. However, the architect designed a very interesting portal which visually includes the windows which flank the entrance door. The meeting point is emphasized by a protruding moulding which runs over the door and the two windows. Both the entrance and the couple of windows are surrounded with archivolt mouldings which are highlighted with lines of grooved stripes. Their distinct, geometric form is the façade's dominant element which is also emphasized by the brick red colour. It also contrasts with the remaining part of the façade which has light plaster. The remaining windows’ reveals are also highlighted with this colour which emphasizes the composition’s coherence.
Inside the tenement house, the terrazzo floor draws attention. In the vestibule, you can see a decorative pattern of a brick red rectangle frame. In its two inner corners, you can see two triangles emphasized with black rhombuses which resemble the wind rose motif. The inner double door which leads into the staircase is wooden, glazed in and red brick too. The bright terrazzo stairs with a ribbon handrail made of wood with a very simple, non-ornamental form lead upstairs.
The original apartment entrance doors have survived in the building. They are much wider than the typical ones as they have additional, side leafs. The doors serve an additional, decorative function as the edge of the narrower leaf is emphasized with a black slat which you can also see in the door frames. In the façade, we can also see rhythmical divisions and a clear play of contrasts. The doors are decorated with handles in the form of brass knobs.
The electrical insulator which was placed on the building’s façade is a very interesting detail. Usually, insulators are made of white or off-white ceramics. However, the ones in Tekla Buchholz’s tenement house are made of beautiful, bottle-green glass.
The building has another façade facing the yard. It is composed of three rows of balconies (three in each) connected with a metal pillar with a round cross section which runs along the centre axis of the balconies. The windows above the entrance are the main source of light for the staircase. They are arranged in a continuous vertical line – the so called thermometer.