Reston’s neighborhoods went up in waves — the first Lake Anne-era homes in the mid-1960s, then cluster after cluster of contemporaries, townhomes, and colonials through the 1970s and 80s as the planned community filled in. That construction history shows up in electrical panels all over town. Many Reston homes still carry their original 100-amp or 150-amp service, some sit behind panels from manufacturers that no longer exist, and houses from the early-70s stretch fall squarely into the era when aluminum branch-circuit wiring was common in Northern Virginia — something we check for any time we open a panel of that vintage.
Meanwhile, the demands on those panels keep climbing. Reston has one of the strongest EV adoption rates in Fairfax County, heat pumps are replacing gas furnaces, and basements and home offices keep adding circuits. SparkWise Electric performs panel upgrades throughout Reston — licensed and insured (VA Master #2710064102, VA Contractor #2705160838), with the Fairfax County permit and inspection process handled end to end. Here is what the project looks like for a Reston home.
Signs Your Reston Home Needs a Panel Upgrade
- The panel is original to the house. If your home was built in the 1960s–80s and the panel has never been replaced, it is running decades past its design life even if nothing has failed yet.
- You are adding an EV charger. A Level 2 charger is often the single largest load in the house, and many 100A Reston panels cannot absorb it without an upgrade or load management.
- Breakers trip under normal life — laundry plus cooking, or AC plus a hair dryer. Frequent tripping means the service is undersized for the way you live.
- Aluminum branch wiring is present. Early-70s homes may have aluminum circuits that deserve evaluation; a panel project is the natural time to assess and remediate connections.
- No room for new circuits. Full bus bars and stacked tandem breakers mean the panel is out of headroom before you add anything.
- Warm breakers, buzzing, flickering, or corrosion inside the panel — symptoms worth a licensed electrician’s eyes promptly, whatever the panel’s age.
From 100A to 200A: What the Upgrade Involves
For most Reston single-family homes and many townhomes, the endpoint is a modern 200-amp panel — enough capacity for today’s loads plus the EV charger, heat pump, or kitchen electrification you might add later. The project runs in four stages:
- Load calculation and site review. We measure what your home draws today, add what you are planning, and confirm the right service size. We also inspect for aluminum wiring and any panel-brand concerns while we are in there.
- Fairfax County permit. We file the electrical permit before work begins and coordinate the service work with Dominion Energy.
- Installation day. The old panel comes out; the new 200A panel, breakers, grounding electrode system, and (as required) meter base and service entrance conductors go in. Every circuit gets traced and labeled.
- County inspection. Fairfax County inspects the finished work; we schedule it and close out the permit for you.
One Reston-specific wrinkle worth knowing: many cluster homes place panels in tight interior closets or shared utility walls, and some services arrive underground through shared conduit runs. Neither is a problem — but both affect labor and staging, which is why we quote from a site visit rather than over the phone. If your home is part of a cluster association, exterior changes such as a relocated meter base can also touch association guidelines; we have navigated that before and will flag it early.
Heavy-Up or Panel Swap?
A heavy-up raises your service capacity — new service conductors, meter, and a bigger panel, typically 100A to 200A. A panel swap keeps your existing amperage but replaces aging or problematic equipment with a modern, safe panel. In Reston both jobs are common: a townhome with adequate 150A service but a tired original panel usually needs a panel swap, while a single-family home adding an EV charger and heat pump usually justifies the full heavy-up. The load calculation — not guesswork — tells us which one fits, and we quote accordingly.
Permits and Inspections in Fairfax County
Reston sits in Fairfax County, so panel and service work is permitted and inspected through Fairfax County’s land development services rather than a town office. Permit requirements vary by jurisdiction, and Fairfax has its own e-filing and inspection scheduling system — we handle permit filing, Dominion coordination, and inspection scheduling on every panel project. Skipping the permit is not an option we offer: unpermitted service work surfaces at resale, complicates insurance claims, and leaves you without the safety check the inspection exists to provide.
Recent Panel Work Near Reston
Completed SparkWise projects on Reston streets (details kept anonymous):
- Sarazen Place — demoed and replaced a 150-amp panelboard, including removal of all breakers and complete rebuild of conduit terminations and wire connections.
- Breton Court — installed a new Square D QO flush-mount panel to replace aging original equipment.
- Regatta Lane — breaker replacement to resolve a failing circuit.
- Lakeport Way — dedicated EV charger circuit added, the kind of load that panel headroom makes possible.
Timing tip: if a heat pump conversion, kitchen remodel, or EV purchase is on your calendar for the next year or two, it is worth running the load calculation now. Sizing the panel once for everything you plan — instead of upgrading twice — is the cheapest version of this project you will ever be offered.
Panel Upgrade FAQ for Reston Homeowners
How much does a panel upgrade cost in Reston?
Most projects fall between $2,500 and $5,000 depending on scope. A straightforward panel swap at existing amperage sits near the low end; a full 100A-to-200A heavy-up with new service entrance and grounding sits higher. Aluminum-wiring remediation, if needed, is scoped and priced separately so you can see each decision clearly. Quotes are free and in writing.
How long will my power be off?
Plan on several hours without power on installation day — the swap-over happens in a single day for nearly every home. Start to finish, the project usually spans one to three weeks including permitting, utility coordination, and the final inspection.
Can I stay home while you work?
Yes. You will be without HVAC, Wi-Fi, and refrigeration during the outage window, so some homeowners choose to work elsewhere that day, but there is no requirement to leave.
Do I need 200 amps for an EV charger?
Not always — but it is the most future-proof answer. A 200A service carries a Level 2 charger without load juggling. If you are weighing the options, our EV charger installation in Reston page covers circuit sizing and the panel questions that come with it, and the EV charger service overview covers hardware choices.
What else is worth doing while the panel is open?
A whole-house surge protector is the most cost-effective add-on — it installs at the panel, protects every circuit in the house, and costs far less during a panel project than as a standalone visit.
Get a Panel Upgrade Quote in Reston
From Lake Anne to North Point, SparkWise Electric handles panel upgrades across Reston — and for everything else electrical, see our Reston electrician page. Call (703) 915-5351 or book online for a free estimate. Licensed & insured — VA Master #2710064102, VA Contractor #2705160838.
Panel Upgrades in Nearby Areas
We handle panel upgrades and replacements across Northern Virginia. If you are outside Reston, these are the areas closest to you: Ashburn · Vienna · Fairfax · Arlington · Alexandria · Gainesville.