Your Montana Land Development Team. Engineering West has been designing and planning subdivisions, wastewater treatment systems, man camps, RV parks, and water systems for residential and commercial uses throughout the state of Montana. Providing services to Home Owners, Private Residential Real Estate Developers, Commerical Real Estate Developers, Surveyors, Engineering Firms, Architecture Firms, Home Builders, Local Government Agencies, State Government Agencies, Federal Government Agencies.