Services and mains guidelines
Installation of services and gas mains
Services
NW Natural will install gas service to your new residential or commercial building using NW Natural-provided conduit installed by a builder or excavator. We'll install the service within seven business days of receiving your order.
Gas Mains
NW Natural will install gas main in a trench provided by the developer/contractor within a subdivision. Please contact us at least seven business days before the pathway is available for main installation.
If your project is not a subdivision, please contact us at least 6-7 weeks before the pathway is available for installation of gas mains.
How to Prepare for main installation
Steps needed prior to gas main installation
The developer/contractor must submit a copy of the civil engineering designs and a copy of the electric designs to NW Natural before NW Natural agrees to provide service.
NW Natural recommends an on-site meeting with representatives of all utilities before construction begins. NW Natural will design its infrastructure to parallel the electrical facilities whenever possible, as gas installations typically shadow other utilities and can be installed in a joint trench.
The trench must be padded with 12 inches of select or clean native backfill material to separate other utilities from the natural gas pipeline.
Specifications assume that no sewer, water, storm drains or other wet facilities will be located in a trench with natural gas mains.
Once all designs have been submitted, NW Natural will provide the developer with a sketch of the required gas facilities and street crossings. Upon request, NW Natural will provide a location where the developer’s contractor can pick up NW Natural-provided conduit for the crossings.
The developer/contractor must notify NW Natural at least seven business days before excavation of the joint trench.
The developer or contractor should call four days prior to shading to set the inspection date.
NW Natural will begin installing the gas main within seven business days of the date the trench is approved by a NW Natural representative.