Summary constructive arrangement in house fixing set for pets. This present utility model deals with a new constructive arrangement in the set of house fixing for pets, being called the type house for the accommodation of diverse animals such as dogs, cats and the like, well known as pets; more precisely, the house (10) is composed of an upper module (40) configured as a roof of the structure and a lower module (30) as a pet bed; each module (30) and (40) is of the thermoformed polymer type, forming main and independent structures, more precisely large open area boxes (a1) and (a2); each module (30) and (40) is formed by side walls (c1) and (t1), rear walls (c2) and (t2), front walls (c3) and (t3) with openings (r2) and (r1) , and closure bases (c4) and (t4); each module (30) and (40) has, around the wide open areas (a1) and (a2) respective outer and lateral relief contouring edges (31) and (41); the outer and side relief contouring edges (31) and (41) receive the fastening assembly between said modules (30) and (40) in the form of pins (32) projecting from the outer vertical side face of the edge (31) and holes (42) practiced on the outer vertical lateral face of the edge (41); the pins (32) of the lower module (30) are distributed such that at each structural wall (c1) / (c2) / (c3) of said edge (31) at least one pin (32) is provided, while each structural wall (t1) / (t2) / (t3) at said edge (41) receives the distribution of at least one hole (42) aligned and corresponding to each pin (32) of said edge (31).resumo disposição construtiva em conjunto de fixação de casa para animais domésticos. trata o presente modelo de utilidade de uma nova disposição construtiva em conjunto de fixação de casa para animais domésticos, sendo dita casa do tipo para acomodação de animais diversos como cães, gatos e similares, muito conhecidos por pets; mais precisamente a casa (10) é composta por módulo superior (40) configurado como telhado da estrutura e módulo inferior (30) como l