General Contracting

Project management, clear communication, and quality craftsmanship for every stage of your home improvement project. Proudly serving Marin, Napa, Sonoma, and surrounding counties

CATEGORY / INTERIOR
CLIENT / ARK ANGEL LTD
Get a QuoteCall 707-250-7930

Your Trusted Local General Contractor

Every successful project starts with a dependable contractor. At In Service Builders, we provide full-service general contracting for homeowners throughout Marin, Napa, Sonoma, and surrounding counties. From small improvements to full remodels, we manage your project with skilled oversight, honest communication, and high-quality construction work

We help coordinate all stages of the build — planning, scheduling, materials, trade partners, and final execution — so your project stays organized and on track from start to finish.

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InService Builders delivered a steady and professional ADU build for us in Marin County, excelling in scheduling, coordination, safety, communication, and high-quality craftsmanship. Al Travasso
Al T - Sonoma County

General Contracting Services We Provide

Here are the core services we offer to keep your project running smoothly and built to a high standard.

Conversions


 From repairs to functional upgrades, we handle the improvements your home needs to stay safe, comfortable, and well-maintained

Additions

We manage and construct renovations of all sizes. Whether you’re adding one room or multiple spaces, we guide the project every step of the way.

New Build (ADU)

We oversee the entire project, planning, coordinating subcontractors, materials, and keeping everything organized so the job gets done right.

Additional Services

We also provide help with material selections, quality control, scheduling, budget guidance, and coordination with specialty trades.
Our goal is to deliver a smooth, stress-free construction experience where no detail is overlooked.

Why Homeowners Choose Us for General Contracting

Reliable Oversight

We keep your project running smoothly with organized scheduling, clear direction, and dependable follow-through.

Strong Communication

We keep you updated on progress, timelines, and expectations so you always know what’s happening.

Skilled Craftsmanship

We bring years of hands-on experience across interior, exterior, ADU, and renovation projects.

Local Knowledge

We understand Marin, Napa, Sonoma, and surrounding county homes — and what it takes to build quality results that last.

Our General Contracting Process

1

Discovery Meeting

We review your ideas, plans, sketches, photos, and project notes. In some cases, a site or lot inspection is completed. We also discuss your ideal budget and explore options based on our experience.
2

Ballpark

Using your plans, inspiration photos, and desired finishes, we prepare a rough ballpark estimate aligned with your project goals and budget.
3

Project Package

We create a detailed project package that includes scope of work, selections and samples, construction drawings, permits, a rough schedule, and work orders to guide the build.
4

Construction

Construction begins following the approved project package. Meetings and site visits are scheduled to review progress and upcoming milestones.
5

Completion

Once construction is complete, we conduct a final walkthrough using a detailed checklist. Any remaining items are addressed, and we review all applicable warranties with you.
Get a QuoteCall 707-250-7930

Frequently Asked Questions

What does a general contractor do?

We coordinate the entire project, manage trades, oversee schedules, and ensure quality work from start to finish.

Do you work with subcontractors?

Yes. We partner with reliable, skilled trades and manage them throughout the project.

Can you help with permits?

Yes. We assist with any necessary permits depending on the type of project.

What size projects do you handle?

We manage everything from small upgrades to major renovations and full remodels.