Full Duplex Rewire & 400A Service Upgrade in San Francisco
Max Electric completed a full electrical renovation of a two-unit duplex on 11th Avenue, including complete rewiring, all-new circuits, appliance connections, a 400A service upgrade, PG&E coordination, and secondary service box replacement.
A complete electrical renovation for a two-unit San Francisco duplex
This 11th Avenue project required more than a panel change or isolated circuit work. Max Electric modernized the electrical system across both units, replacing outdated wiring, installing new circuits, and preparing the property for modern appliance loads and long-term residential use.
The work included full electrical rewiring of both units, new appliance circuits, a 400A service upgrade, and a dedicated common-area service. The upgraded layout provides 200A service for each unit and 100A service for shared areas.
Because the project involved both building renovation and utility work, the schedule had to be managed in phases. Our team coordinated construction sequencing, PG&E requirements, and secondary service box replacement so the full electrical modernization could be completed properly.
What this duplex upgrade needed to accomplish
The project had to modernize the entire electrical system, increase service capacity, support new appliance circuits, and coordinate utility work without losing control of the renovation timeline.
The property was upgraded to a 400A service to support two units and common areas.
Both duplex units received complete rewiring and new electrical circuits.
A dedicated common-area service was included in the upgraded electrical layout.
The full renovation was completed over an eight-month project period.
Electrical services completed by Max Electric
The scope combined full-unit rewiring, service upgrade planning, utility coordination, secondary service box replacement, and new circuit installation for modern residential use.
Full Duplex Rewiring
Both units were rewired to replace outdated electrical infrastructure and support modern residential loads.
400A Service Upgrade
The service was upgraded to provide 200A capacity for each unit and dedicated 100A common-area service.
PG&E Coordination
Utility coordination was part of the project because the service upgrade required work beyond the building itself.
Secondary Service Box Replacement
The secondary service box serving the property was replaced as part of the electrical service modernization.
Appliance Circuits
New dedicated circuits were installed to support modern appliances throughout the duplex.
Multi-Unit Electrical Renovation
The final system was planned around two separate units, common areas, utility requirements, and long-term serviceability.
Managing a full rewire, service upgrade, and utility work in phases
The main challenge was coordinating several major scopes at once: rewiring both units, installing new circuits, upgrading the service to 400A, and replacing the secondary service box. Each part had to fit into the larger renovation schedule without creating delays for the property owner.
Utility coordination added another layer of complexity. Our team worked around PG&E requirements, exterior access, sidewalk preparation, and service equipment changes while keeping the project organized across an eight-month timeline.
Electrical renovation planned in phases
The work was sequenced around construction progress, utility requirements, and the needs of both units.
Service upgrade coordinated with PG&E
The 400A service upgrade required planning beyond the panel location, including utility-side coordination and service box replacement.
Future-ready capacity delivered
The completed system was designed to support modern living, appliance loads, and separate service needs for each unit.
How the duplex modernization was handled
The process was built around clear planning, phased construction, utility coordination, new service equipment, and final system readiness for both residential units.
Existing system reviewed
We evaluated the original electrical equipment, service needs, and renovation goals before finalizing the upgrade path.
Rewire and circuits installed
Both units received new wiring and circuits to support modern appliances and everyday residential electrical use.
Utility work coordinated
PG&E coordination and secondary service box replacement were managed as part of the broader service upgrade.
400A service completed
The final system delivered 200A service for each unit, dedicated common-area service, and improved long-term capacity.
The result: a fully modernized duplex electrical system
Max Electric completed the full duplex rewire and 400A service upgrade over an eight-month period. The property now has increased electrical capacity, all-new circuits, modern appliance support, and a service layout designed around two residential units plus shared areas.
The upgraded system gives the property a stronger electrical foundation for modern living. With 200A service for each unit and dedicated common-area capacity, the duplex is better prepared for today’s electrical demands and future improvements.
Both units fully rewired
The duplex received a complete wiring renovation across both residential units.
400A service capacity added
The property now supports 200A service for each unit and 100A common-area service.
Utility upgrade completed
PG&E coordination and secondary service box replacement were completed as part of the modernization.
Service upgrade planning, utility work, and completed exterior details
This project required both building-side electrical renovation and utility-side coordination, including sidewalk preparation, secondary service box replacement, and final exterior restoration.
Planning a full rewire or service upgrade for your property?
Max Electric helps homeowners, property owners, landlords, contractors, and building managers complete major electrical renovations safely and efficiently. From full rewiring and new circuits to service upgrades and utility coordination, our team plans the work around real building conditions.
Tell us about your electrical project
Share your property type, current service size, renovation plans, appliance needs, and any utility coordination concerns. We’ll help identify the next practical step.