

Ancient Kerala architecture has a very distinctive style. Though much of it's secrets have passed into history, the buildings still stand as testaments to the skill of the ancient builders. The low houses with their peaked, tiled roofs and wooden floors are often seen even through the jungles of steel and concrete.
Many old houses in Kerala invariably consists of 4 rooms joined together in a rectangle form, facing the cardinal points of the compass with a yard in the center inside. These structures are called Nalukettu ('four buildings'). This style of construction was primarily for convenience, as the joint family system was prevalent then, and each individual family could live in one apartment of the house. Needless to say, it was a very large, spread-out house ! The Nalukettu was constructed in the center of a compound with no more than one storey.
Originally the abode of the wealthy
Brahmin and Nair families, this style of architecture has today become a status
symbol among the well to do in Kerala. Nalukettu is evident in the traditional
homes of the upper class homestead where customs and rituals were a part of
life.
The mansion is created using wood and tiles, central open courtyard
and wondrous architecture. The interiors of the house are tastefully decorated
with a wealth of antiques made from teak, sandalwood, mahogany etc.
Essentially, Nalukettu can be
explained as an expansion of the concept of 'sala' enshrined in the 'Vaastushastra',
the Indian science of architecture. A 'sala' was a square or rectangular living
room with verandas on one or more sides.
An 'akashala' or single unit house was affordable for even the
poorest and the lowest in the rigid caste hierarchy. The addition of another
L-shaped hall made it a 'dwissala' or two-structured abode. Further economic
advancement and familial needs led to the addition of a third structure, making
three sides of open -ended square -a 'thrissala'.
When the fourth side was also hemmed in by the addition of another
'sala', the resultant square became 'chatussala' or the 'nalu' (four) and 'kettu'
(built up sides).
The traditional 'Nalukettu', barring
the foundation and floor is made of carved and slotted wood and has a close
resemblance to East Asian gabled and thatched structures. In later years, tiles
replaced the coconut fronds.
The four blocks are the Vadakkini (northern
block), Padinjattini (western block), Kizhakkini
(eastern block) and Thekkini (southern block). It was specially
designed to cater to the needs of the huge tharavadu (upper class homestead)
under the Marumakkathayam (matrilineal) system.
The enclosed courtyard or 'ankanam' is usually
sunk and therefore called 'Kuzhi (pit) Ankanam'. The protruding roofs of the 'salas'
formed shady verandas and protected the rooms from direct sunlight, keeping them
cool even on the hottest of days. The inner verandah around the 'ankanam' is
open.
The outer verandahs along the four sides of the 'Nalukettu'
are enclosed differently. While both the western and eastern verandahs are left
open, the northern and southern verandahs are enclosed or semi-enclosed.
In the middle of the enclosed southern or western 'salas' is the 'Ara'
or the storage room, flanked by bedrooms. The floor of the 'Ara' was raised even
higher than that of the other 'salas' to accommodate a 'nilavara'
or basement.
Entrances to the building were provided at the centre of the east,
west, north and south sides depending on the position of the 'Ara'.
While arranging the rooms inside a Nalukettu, the kitchen should come only in the northern or eastern Salas. Bedrooms are better located in the southern and western blocks. The `Madhya Soothras' (centre line) in both directions must pass freely with out any obstruction.
The central veranda as well as the `Poomukham' outside can be made more attractive by giving small architectural pillars and trellis.
As the families prospered and grew in size, other squares of 'salas'
were added to make 'Ettukettus' or mansions with eight 'salas' around two
courtyards.
On the firmer grounds of Kerala, the 'Nalukettu' rose upwards into
two or three storeys, the upper floors being reserved for the 'Karanavars'
(elders).
By the time multi-storeyed mansions evolved, the wooden walls had
given way to laterite ones plastered with lime. The ultimate development in this
line was the 'pathinarukettu', or structure with 16 'salas'.
The 'Nalukettu' tradition was preserved by the 'thatchans' or trained architect-painters, well versed in the science of 'Vaastushastra'. Much of the rules of construction are codified in the 'Manushyalaya Chandrika', a treatise on architecture by the famed architect, Mangalathu Neelkantam Namboothiri.
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