Maintenance by Diaz logo with license number 13VH10470500Full-service
property careLicense # 13VH10470500
Maintenance by Diaz logo

One crew. Every part of the property.

Property work, handled.

Maintenance by Diaz is the full-service partner for homeowners, small businesses, and property managers who need capable work without coordinating five different crews.

Roof replacement before-and-after project in Plainfield, Union County, New Jersey
Roof replacement · PlainfieldBefore / after

1 / 4 · Roof replacement

LicensedBondedInsuredWorkers' compensationLicense # 13VH10470500
Handyman services flyer featuring repairs, installations, and small jobs from Maintenance by Diaz
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A practical resource

Printable Home Maintenance Guides

25 years of hands-on renovation and property maintenance, put on paper. Our printable PDF guides walk you through what to check and when, season by season—with checklists you can tick off, maintenance logs, and a page for your vendor contacts. Each guide is a digital PDF download for $7.99. Instant download, print at home.

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Featured project work

Before. During. After.

Real project photography shows the starting point, the work in motion, and the finished surface—not just the final reveal.

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Roof replacement before-and-after project in Plainfield, Union County, New Jersey
Roof replacementBefore / after
Completed Plainfield driveway and patio transformation
Driveway & patioPlainfield · After

For property owners & managers

Keep the building moving.

GR Management Group manages properties and relies on Maintenance by Diaz for building maintenance, repairs, and improvement work. The roles are clear: GR Management Group manages the property relationship; Maintenance by Diaz does the hands-on work that keeps the property cared for.

GR Management Group logo

A property-management partnership

A direct maintenance resource for managed homes, apartments, and commercial spaces.

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A practical next step

Tell us what needs doing.

Share the property, the priority, and the work you have in mind. We’ll start with a clear conversation.

Start a project inquiry