If you are involved in some domotic project, you must know RFXtrx433E. This fantastic USB 433.92MHz Transceiver enables your domotic server to talk to most of 433MHz device on the market. But it has a maximum range of 20-30 meters in a typical indoor configuration. So, like your WiFi router, it should be placed in the middle of your home. As there is a big chance that your server won't be located in the middle of your home and as this device is USB connected, you are in trouble.
An elegant and efficient option is to plug the RFXtrx433E to any network device properly located and to create a network bridge between this device and your domotic server. This network connected device could be a raspberry pi, but best would be to directly use any of your home WiFi device running OpenWRT.
This guide explains how to use any WiFi device (router, access point or repeater) with a free USB plug as a bridge between your RFXtrx433E USB plug and your domotic server. The only pre requisite is to run OpenWRT on that device so that it runs a full Linux kernel. Hopefully, a lot of wifi device can be flashed with openwrt.
This setup has been designed and tested on a TP-Link TL-WDR4900v1 router and a Debian 8 server. It has also been tested on a GL-AR150 Mini router with Openwrt pre-installed. But it should be easily adapted to any other OpenWRT flashable device and a domotic server running any modern Linux distribution.