Plumbing Services
Residential and commercial plumbing across the DC Metro Area — performed by in-house licensed plumbers, not subcontractors.
Repairs Core Service
Leak Detection & Repair
We locate and repair leaks in supply lines, drain lines, and concealed or slab piping. We use pressure testing and visual inspection to pinpoint problems before they cause structural damage or mold growth. Particularly valuable for multifamily buildings where a single leak can affect multiple units.
Get a QuotePipe Repair & Replacement
Spot repairs for cracked, corroded, or broken pipes — or full repipe when aging infrastructure demands it. We work in copper, PEX, CPVC, and cast iron depending on the application, and pull permits for all structural work.
Get a QuoteFaucet & Valve Repair
Dripping faucets, running toilets, stuck shutoffs, and failing PRVs. We repair or replace on the spot in most cases, using commercial-grade components appropriate for high-traffic or multifamily use.
Get a QuoteSewer Line Repair
Camera inspection to diagnose the problem — root intrusion, offset joints, collapse — followed by targeted repair or lining. We coordinate with local utilities for road cuts and permit requirements when needed.
Get a QuoteInstallation New & Replacement
Water Heater Installation
Tank and tankless water heater replacement and new installation for residential and commercial applications. We size equipment correctly, pull the permit, and handle the gas or electric tie-in.
Get a QuoteFixture Installation
Toilets, urinals, sinks, faucets, shower valves, floor drains, and utility fixtures. We spec commercial-grade products for multifamily and office settings where durability and throughput matter most.
Get a QuotePipe Replacement & Repiping
Full building repiping for properties with aging galvanized, lead, or polybutylene supply lines. We work floor-by-floor to minimize tenant disruption and coordinate scheduling with property management teams.
Get a QuoteWater Filtration Systems
Whole-building and point-of-use filtration installation, including sediment filters, carbon filters, and softeners for properties on hard-water municipal supplies.
Get a QuoteMaintenance Scheduled
Drain Cleaning
Hydro-jetting and mechanical snaking for blocked or slow floor drains, kitchen grease lines, laundry drains, and main sewer lines. Ideal as a scheduled preventive service for commercial kitchens and multifamily properties.
Get a QuoteBackflow Prevention Testing & Certification
Avalon Plumbing has a WSSC certified backflow technician on staff. We perform annual testing and certification of backflow preventers as required by MD, DC, and VA water authorities — including WSSC, DCWASA, and Virginia jurisdictions — and handle all paperwork submission directly so you have documentation on file.
Get a QuotePreventive Plumbing Inspections
Annual or semi-annual walkthroughs for property managers who want problems identified before tenants report them. We provide a written condition report with prioritized recommendations.
Get a QuoteCommercial Business & Property
New Construction & Rough-In
Ground-up plumbing for commercial and multifamily construction projects. We coordinate with GCs on scheduling, inspections, and permit closeout — our in-house team means no sub-tier accountability gaps.
Get a QuoteTenant Improvement Plumbing
Plumbing modifications for retail, office, and multifamily buildouts — relocating fixtures, adding lines, modifying restroom configurations for ADA compliance or code upgrades.
Get a QuoteCommercial Water Heater Systems
Sizing, installation, and maintenance of commercial water heater systems including storage tanks, heat pump units, and recirculation systems for hotels, apartment buildings, and office properties.
Get a QuoteGrease Trap Installation & Service
Grease interceptor installation and scheduled pumping coordination for commercial kitchen facilities — keeping you in compliance with FOG discharge regulations.
Get a QuoteBuilt for Property Managers
We built our operations around the people who manage buildings, not around individual service calls.
In-House Licensed Plumbers Only
No subcontractors. Every technician on your property is a direct Avalon employee — licensed, insured, and accountable to us.
Permit-Pulled, Code-Compliant Work
Every job that requires a permit gets one. We handle the filing and inspection coordination — you get documentation for your records.
Multi-Jurisdiction Licensed
We hold active licenses in Maryland, Washington DC, and Virginia — so property portfolios that span jurisdictions have a single reliable partner.
Straight Communication
We tell you what the job needs, what it costs, and what to expect — upfront, before work begins. No surprises on the invoice.