Questão jurídica principal
Whether the public law appeal and subsidiary constitutional complaint were admissible.
Decisão extraída
The public law appeal was admissible in principle; the subsidiary constitutional complaint was inadmissible because the ordinary federal appeal route was open.
Fundamentação extraída
The dispute concerned public construction law, no exclusion ground applied, and the neighbor had standing due to proximity; where the public law appeal is available, the subsidiary constitutional complaint is excluded.