As a construction company, HPL propagates the use of various techniques in housing as mentioned below.

1) Large panel fully prefab system.
2) Composite roofing system using precast beams and other eliments.
3) Partial prefab system using cast-in-site walls and precast roofs.
4) Totally cast-in-situ system using small precast elements.

The techniques to be adopted depend upon the needs of the client and the level of the economy to be achieved. Although HPL has used the large panel fully prefab system, it believes in economising costs further by using partial prefab system to suit the economy of the country. Various types of residential buildings have been constructed by HPL. Irrespective of the type of buildings constructed, there is always a stringent check on quality of inputs.

HPL procures the best quality steel, stone aggregates and cement to deliver a structure with factory produced precision, which very few organisations can boast of. Even the wood work in these structures was manufactured in the HPL factory itself. One of the prestigious projects executed by HPL is the 60 Nos. Type VI houses and 24 Nos. Transit Flats, at Andrews Ganj, New Delhi. These competed buildings meant for the residence of senior Government Officers were constructed with materials unknown traditionally in the Indian context. The buildings feature such newly introduced materials as machine made red clay bricks, white sand-lime bricks, medium density fibre board doors and cup-boards, pressed steel window sections and UPVC sanitary pipes.

Large panelled buildings are also built very fast and this is one of the methods of solving the housing problem in the country. These large panelled buildings put up in Sadiq Nagar, New Delhi, house Government officials and have been in existence for more than two decades. These buildings do not require elaborate up-keep expenditure and a huge saving in maintenance cost has been possible.
HPL was the first Construction Company to introduce the use of large panel technique of construction in 336 Nos. fully prefabricated large panel, 4 storeyed middle Income group houses for Delhi Development Authority at Hauz Khas, New Delhi, way back in 1965.

HPL entered into an MOU with Bharat Coking Coal Ltd. (A Govt. of India Enterprise) in July, 1990 for the construction of 2500 Residential units including roads, drainage, culverts, bridges, retaining walls, land scaping, external water supply, sanitary, sewerage etc. for miners at various locations in and around Dhanbad, Bihar progressively. Out of this, HPL has completed 1524 Residential units in three packages totalling INR 220 Million.

HPL has been awarded the construction of 716 officer's flats valuing INR 210 Million by Bhartiya Reserve Bank Note Mudran Limited (BRBNML) in November, 1995 at Salboni, Dist. Midnapur, West Bengal and this has been one of the most ambitious construction projects in recent times. The work comprises of 536 Nos. B Type and 180 Nos. C Type flats. The total floor area is 45,300 sqm.