One of the important possible directions of blockchain technology implementation is the sphere of housing and communal services. The use of blockchain in accounting for the received utilities and payment for them can make these processes absolutely transparent, understandable and verifiable, which is not always done with the current system of payment for housing and communal services. The paper describes the algorithms of interaction between suppliers and consumers of housing and communal services on the basis of blockchain technology, hashchain and cryptography methods. Blockchain procedures for concluding a contract for the supply of utilities, accounting for consumption, billing, payment for services and resolving problems have been developed. The proposed methods allow both providers and consumers of ESIA to guarantee the accuracy and reliability of the data, as well as their protection and indestructibility.