Carranza Contracting LLC is a trusted exterior improvement company based in Rockville, Maryland, proudly serving residential and commercial clients within a 75-mile radius. With more than 20 years of industry experience and a company history dating back to 2011, we bring strong field knowledge, dependable service, and project-focused solutions to every property we work on. We operate Monday through Friday from 8:00 AM to 6:00 PM and Saturday from 8:00 AM to 2:00 PM, providing convenient scheduling for homeowners and businesses alike. As a licensed and insured contractor with license number #162558, we are committed to delivering value, professionalism, and lasting results.

Over 20 years of industry experience

License # 162558

At Carranza Contracting LLC, our work is guided by professionalism, accountability, and respect for every client’s investment. We understand that exterior projects affect both property appearance and long-term performance, which is why we approach each service with careful planning and strong attention to detail. Our team values clear communication, timely service, and practical recommendations that align with each property’s needs. We work hard to build long-term relationships by delivering consistent quality and dependable project execution. From the first consultation to the final stage of the job, our goal is to provide a smooth and positive experience.

Our company offers a focused range of exterior services designed to improve protection, appearance, and functionality. We provide roofing installation, replacement, repair, and maintenance, as well as siding installation and repair, window and door installation, and gutter installation. Each service is tailored to the property's needs, whether the goal is structural improvement, curb appeal, weather protection, or long-term maintenance. We work with both residential and commercial clients, adapting our solutions to different building types and project scopes. By concentrating on key exterior systems, we help property owners improve performance and visual appeal with confidence.
Having a professionally installed roofing system is essential for protecting property, ensuring comfort, and maintaining long-term value.
High-quality siding plays a major role in protecting a property's exterior while also improving its appearance and energy performance.
Windows and doors contribute to a property's function, style, and efficiency, making proper installation a critical part of any exterior improvement project.
A well-designed gutter system is essential for directing water away from the property and protecting the foundation, roofline, and surrounding exterior surfaces.
Carranza Contracting LLC uses dependable materials and proven installation methods to deliver strong exterior results that perform well over time. We believe every successful project begins with good product selection, careful preparation, and disciplined execution. Our team evaluates each property to recommend practical solutions that fit the space's structure, style, and functional needs. Whether we are working on roofing, siding, windows, doors, or gutters, we focus on precision, durability, and visual consistency. This detail-driven approach helps us complete projects that support both performance and curb appeal.

Our project process is designed to provide clarity, efficiency, and dependable results at every step. We begin by discussing the property’s needs, goals, and budget, then conduct a site review and provide a clear estimate. Once the project is approved, our team coordinates scheduling, material planning, and on-site work with a strong focus on professionalism and communication. We respect our clients’ time and property, and we work to keep each phase organized and productive. Throughout the process, we stay focused on quality execution and timely progress.


We bring industry experience and a company history built on reliable service. We are licensed and insured, and provide free estimates for residential and commercial projects.
To deliver reliable exterior contracting solutions that improve protection, function, and property value for every client.
To be recognized as a leading exterior contractor in Maryland through quality service, trusted relationships, and lasting results.
Monday through Friday, 8:00 am to 6:00 pm
Saturday, 8:00 am to 2:00 pm
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