- remove dhcpd daemon and set the address in interfaces file, or
- set the static IP address for your RaspberryPi in your DHCP server.
But, the really best and simplest solution is to set static IP address thru dhcpcd.
Open /etc/dhcpcd.conf file and add this content at the end of the file:
static ip_address=192.168.1.10/24 static routers=192.168.1.1 static domain_name_servers=192.168.1.1
This IP address is then set for eth0 interface. If you have more than one interface, you need to add interface interface_name before static ip_address line:
interface wlan0 static ip_address=192.168.1.11/24 ...