House Rewiring in Silver Spring, MD

When patching is not enough and the wiring itself needs to go

Rewiring means replacing the wires inside the walls, not just the outlets and switches you can see. It is the larger job, and it is the right one when the wiring has aged past the point where repairs hold. In Silver Spring, where much of the housing dates from the 1920s through the 1960s, that happens more often than people expect.

The wiring problems that call for it follow the decade the house was built. Knob-and-tube wiring, used in homes into the 1940s, has no ground and can be a hazard when it is buried in insulation or has been spliced by later owners. Cloth-insulated cable gets brittle and cracks. Aluminum branch wiring, used in some homes from the mid-1960s to the mid-1970s, expands and loosens at connections in a way copper does not. And two-wire circuits, with no ground, cannot support modern electronics the way grounded ones do.

Rewiring is also a project, not a visit. It usually means working through the house room by room, opening small access points in walls and ceilings, pulling new cable, and bringing the circuits back together at the panel. It requires a permit and inspections, and the house stays livable if it is staged properly. We lay out the plan with you first: which circuits, in what order, and what finishing work is left behind.

Signs your house may need rewiring

• Knob-and-tube or cloth-covered wiring. If you can see ceramic knobs and cloth-wrapped wire in the attic or basement, the house was wired before grounded cable became standard.
• Aluminum wiring from the 1960s or 70s. It needs specific connectors and can be a concern when outlets run warm or fail. Worth having evaluated.
• Two-prong outlets throughout. It suggests ungrounded wiring across the house, which a few GFCIs only partly solve.
• Frequent breaker trips, flickering or warm outlets. When these show up in several rooms, the problem is usually the system, not a single device.
• An insurer or inspector flagged the wiring. Insurance companies and home inspectors often single out knob-and-tube and aluminum wiring.

How a rewiring project works

1. Evaluate the house

   We trace what the wiring is, where it runs and what condition it is in, and what the panel and service can handle.

2. Plan the scope and the order

   We agree on which rooms and circuits, how the work will be staged, and how the house stays livable.

3. Pull permits and run new wire

   We pull the permit, open access points, pull new cable and install new boxes, outlets and switches.

4. Inspection, connection and testing

   The work is inspected, the old wire is retired and the circuits are tested before the walls are closed up.

What affects the price of rewiring a house

Rewiring is one of the bigger electrical jobs, and the price varies a lot from one house to the next. Here is what drives it:

Why Zavala Electric for house rewiring

Rewiring is a job where honesty matters. We tell you what we find, what is urgent and what can wait, and we do not promise a full rewire when a partial one will do.

We also tell you early if a job is beyond what a small company takes on, and we do not take work we are not set up to do well.

Where we do this work

We take on rewiring in older homes across Silver Spring, where 1920s to 1950s houses are common. We also serve Wheaton, Rockville, Bethesda and Washington, DC.