About Us
Built on Decades of
Field Experience
A network of specialized companies serving construction, inspection, and building compliance across the United States.
Every company in our group was created to solve a real problem we encountered on job sites. No theoretical solutions — only tools and services that work under actual field conditions.
Pacific InterWest
Founded by David E. MacLellan with 45 years of construction experience. Core focus: third-party construction inspection and peer plan review. Quality control without compromise.
MacLellan Media
Industry publications and educational resources for builders and inspectors. Knowledge shared is risk reduced.
Homeowners Education Association
Standards of care for residential construction, compliance, and maintenance. The reference point for builders who do it right.
DEM Site Evaluation
Pre-construction and post-construction surveys and inspections. Named in memory of David E. MacLellan. Recently added: third-party JSAS protocol support for California builders.
Pacific States Aerial
Drone technology integrated into our workflow. Aerial inspections, 3D mapping, high-resolution photography and video for documentation and analysis.
PIW QTECH
Proprietary inspection software and mobile application built in-house. Data collection, analysis, and reporting — streamlined for field teams.
Atlantic & Pacific Build Group
The operating entity uniting all affiliated companies under one structure. Centralized coordination, distributed expertise.
Apartment Inspection Services
Turnkey inspection and consulting for California Senate Bills 721 and 326 compliance. Wood-framed exterior elevated elements — inspected, documented, reported.
Energy Consultants
Navigating California local and federal energy code requirements. Compliance as a service, not a headache.
Construction Inspection
Third-party review, plan check, field verification
Aerial Surveying
Drone-based inspection, 3D modeling, progress docs
Safety Compliance
JSAS protocol implementation, jobsite supervision
Energy Consulting
Code compliance, Title 24, HERS ratings
Software Tools
Mobile inspection apps, data platforms, reporting
Apartment Inspection
EEE compliance under SB 721 / SB 326
No marketing fluff. Just accurate data from qualified professionals.