What is a service entrance — and why does it matter?
Your electrical service entrance is the complete assembly that brings power from Con Edison's lines into your building. It includes the service entrance cable running from the utility connection down to your meter, the meter socket itself, the weatherhead (the curved conduit at the top of the cable), the main disconnect, and the connection into your panel.
Most homeowners think about their breaker panel when they think about electrical capacity — but the service entrance is what limits or enables everything else. A 200-amp panel connected to an old 100-amp service entrance is still a 100-amp system. The service entrance is the actual bottleneck.
In NYC's aging housing stock, service entrances are frequently the weakest link in the electrical system. Pre-war buildings often have original service entrance cables that are decades old, undersized for modern loads, and showing deterioration. Even buildings that had panel upgrades in the 1970s or 80s may still have service entrance equipment that hasn't been touched since then.
Service entrance vs. panel upgrade: These are related but different. A panel upgrade replaces the breaker box. A service entrance upgrade replaces the cable, meter socket, weatherhead, and related equipment. A full service upgrade typically involves both — and that's what ConEd and DOB actually require when you're increasing amperage.
Signs you need a service entrance upgrade
Service entrance problems aren't always obvious until something fails — but there are clear warning signs to look for:
- Visible damage to the service entrance cable — Fraying, cracking, exposed conductor insulation, or weathering on the cable running from the weatherhead to your meter. This is both a safety hazard and a ConEd compliance issue.
- Corrosion or damage at the meter socket — Rust, burn marks, or corrosion around the meter base indicate a service entrance problem, not just a meter issue.
- Repeated power interruptions at the meter level — If breakers are fine but you're losing power, the service entrance is often the cause.
- ConEd flagging your service — ConEd sometimes identifies service entrance problems during meter reads or inspections and flags accounts for required upgrades.
- Failed electrical inspection — A DOB inspection that fails due to service entrance deficiencies requires a full upgrade before sign-off.
- Planning a major electrical upgrade — Adding EV charging, central HVAC, or significant new load almost always triggers a service entrance evaluation. If the existing entrance can't support the new service size, it must be upgraded as part of the project.
- Old or original service entrance cable — Pre-war buildings with original service entrance wiring, or buildings where the cable shows its age (discoloration, stiffness, deteriorating jacket), should be proactively assessed.
What a service entrance upgrade involves in NYC
A service entrance upgrade in New York City is a multi-step process that involves your electrician, ConEd, and the NYC Department of Buildings. Here's exactly what happens:
Assessment & written quote
We inspect the existing service entrance, meter socket, weatherhead, and current amperage. We evaluate what's needed — cable replacement only, full meter socket replacement, weatherhead work, or a combined service and panel upgrade — and give you a written fixed-price quote before anything is scheduled.
DOB permit filing
All service entrance work in NYC requires a DOB electrical permit. We file the application, handle all paperwork, and track approval. You don't touch the filing process.
ConEd application
For any amperage change — or for service entrance replacement on existing service — we file the required application with ConEd. This authorizes the disconnect and reconnect work on their side and triggers their scheduling process. ConEd scheduling typically adds 1–2 weeks to the timeline.
ConEd disconnect
On installation day, ConEd disconnects the service at the utility side before we begin work. We coordinate this scheduling directly — no action required from you beyond being available for access.
Service entrance installation
We replace the service entrance cable, meter socket, weatherhead, and any associated equipment. If the project includes a panel upgrade, that work happens in this same window. Power is off for the duration of this work — typically 4–8 hours.
ConEd reconnect & meter set
After installation, ConEd reconnects at the utility side and resets the meter. We're on-site during their reconnect to verify everything comes up correctly and address any issues immediately.
DOB inspection & sign-off
We schedule the DOB inspection, meet the inspector on-site, and obtain the Certificate of Electrical Inspection. This document confirms the work was done to code and closes the permit.
Service entrance upgrade costs in NYC
Service entrance upgrade pricing in NYC varies based on what needs to be replaced, the current service size, the amperage being upgraded to, and building-specific factors. All prices below include DOB permits.
| Scope | NYC Price Range | Notes |
|---|---|---|
| Service entrance cable replacement only (same amperage) | $1,200 – $2,500 | Cable, weatherhead, meter socket — no amperage change |
| 100A → 200A service upgrade (full) | $3,500 – $6,000 | New SE cable, meter socket, weatherhead + ConEd upgrade |
| 60A → 200A service upgrade (full) | $4,500 – $7,000 | Larger scope; often requires new service entrance path |
| Service entrance + panel upgrade (combined) | $5,500 – $9,500 | Full project; most common scope in pre-war buildings |
| Meter socket replacement only | $800 – $1,600 | When socket is damaged but cable is acceptable |
| Weatherhead replacement | $400 – $900 | Often done as part of larger SE project |
ConEd fees are separate. ConEd charges their own fees for service upgrades — typically $500–$2,000 depending on the upgrade scope — paid directly to ConEd, not your electrician. We'll tell you the expected ConEd fee as part of your quote so the total cost is clear upfront.
Service entrances in NYC's pre-war buildings
NYC's pre-war building stock presents specific service entrance challenges that require electricians with direct experience in these buildings. If you're in a brownstone, rowhouse, or pre-war co-op, here's what you need to know:
Original service entrance cables. Many pre-war buildings still have original service entrance cables — sometimes 80–100 years old. These cables have insulation that has hardened, cracked, or deteriorated. They are typically undersized for modern loads and are a genuine fire and safety risk. Replacement is not optional on these.
Asbestos-wrapped service entrance cables. Service entrance cables from the 1930s through 1970s were sometimes wrapped in asbestos insulation. When this is present, abatement is required before or concurrent with the electrical work. We can coordinate this or work alongside your abatement contractor.
Mast and weatherhead routing. In attached brownstones and rowhouses, the service entrance cable often runs along the exterior of the building. Replacing it requires careful routing to avoid damage to masonry, cornices, and other architectural features. We have extensive experience working on the exteriors of NYC rowhouses.
Co-op and condo alteration agreements. If you're in a co-op or condo building, service entrance work typically requires board approval and an alteration agreement. We provide all required documentation — insurance certificates, license copies, scope of work letters — and are familiar with the alteration agreement process at buildings throughout the city.
Multi-family building service. In multi-family buildings, there may be both a building-level service and individual apartment services. We assess and upgrade at both levels and coordinate with building management throughout.
Frequently asked questions
A panel upgrade replaces the breaker box inside your building. A service entrance upgrade replaces the external components — the cable from the utility connection to your meter, the meter socket, and the weatherhead. A full service upgrade (increasing amperage) requires both: the panel must support the new amperage, and the service entrance must be sized to deliver it. Many electricians say "panel upgrade" when they mean the full package; make sure you understand what's actually being replaced.
The full process — DOB permit filing, ConEd application, scheduling, installation, and inspection — typically takes 2–4 weeks from booking to final sign-off. ConEd scheduling is the main variable; their availability for the disconnect/reconnect determines the installation date. The installation itself (power off) takes 4–8 hours.
Yes. All service entrance work requires a NYC DOB electrical permit and a final inspection. This is non-negotiable — unpermitted service entrance work is an insurance and resale liability, and ConEd will not reconnect on a job that hasn't been filed. We handle all permit filing as standard.
A 100A to 200A service upgrade in NYC involves: filing with DOB, submitting a service upgrade application to ConEd, replacing the service entrance cable with a larger conductor, replacing the meter socket with a 200A-rated unit, installing a new 200A panel (if not already present), and coordinating ConEd's disconnect and reconnect. We handle all of this. Timeline is typically 2–4 weeks; the ConEd fee for the upgrade is paid directly to them (typically $500–$1,500).
If ConEd has flagged your service entrance, they've typically given you a deadline. Call us immediately — we can assess the scope, give you a written quote, file the DOB permit, and submit the ConEd application in the same week in most cases. We work with ConEd-flagged jobs regularly and know how to move quickly when there's a deadline involved.
Yes, and we do them regularly. You'll need board approval and an alteration agreement. For service entrance work specifically, the building's managing agent and super need to be involved since the work touches shared building infrastructure. We coordinate with building management directly and provide all documentation required by your board.
Possibly. Service entrance issues can cause voltage fluctuations, intermittent outages at the meter level, and capacity limitations that manifest as frequent breaker trips. Our assessment visit ($250–$400, credited toward any work) includes a full inspection of the service entrance, meter socket, and panel — so you'll have a clear picture of what's causing your issues before committing to any work.
Service areas — service entrance upgrades across NYC
MP Electric NYC performs service entrance upgrades throughout all five boroughs. We have specific experience with the building types, utility infrastructure, and DOB district office requirements in each area:
- Brooklyn — brownstones, pre-war multi-family, and new construction across Park Slope, Bed-Stuy, Crown Heights, Williamsburg, DUMBO, Cobble Hill, Carroll Gardens, and all Brooklyn neighborhoods
- Queens — attached and detached houses, co-ops, and commercial buildings in Astoria, Jackson Heights, Flushing, Forest Hills, Jamaica, Long Island City, and throughout Queens
- Manhattan — co-ops, condos, townhouses, and pre-war apartments in all Manhattan neighborhoods
- Bronx — single-family, multi-family, and commercial throughout all Bronx neighborhoods
- Staten Island — single-family residential; available on request
What our customers say
"ConEd flagged our service entrance with a 30-day deadline. MP Electric was on-site within two days, filed the permit same week, and got the work done before the deadline. They handled ConEd coordination completely — I didn't make a single call to ConEd myself."
"We needed a 100A to 200A service upgrade for our 1930s brownstone before we could add EV charging. MP Electric did the service entrance, the panel, and the EV charger circuit as one coordinated job. Everything was permitted, ConEd showed up on schedule, and the inspector signed off first visit."
"Our co-op board was skeptical about the scope of the work but MP Electric provided detailed documentation and coordinated with our super throughout. Clean work, no damage to the building exterior, fully permitted. Exactly what you want in a pre-war building."
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