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Home Addition Experts In Durham

Custom Home Additions, Sunrooms, In-Law Suites.

From permits and planning to the final build, we handle every detail for you.

⭐ 5-Star Rated | 🏠 18 Years Experience

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FREE Addition Estimate

Once we have your details, James will contact you to discuss your project.

Outgrowing Your Home? You Don’t Have to Move.

We help Durham homeowners expand their space. From design, permits, and the build, we handle it all.

  • Second-storey additions

  • Rear/side extensions

  • Room additions

  • Sunrooms

  • In-law suites

  • Garage conversions

Our Process

We Handle Everything 

01

INITIAL INQUIRY

STARTING THE CONVERSATION

We begin by learning more about your project through a quick phone call or online form. From there, James or Ian will reach out directly to discuss your vision, timing, and goals. If we’re a good fit, we’ll schedule an on-site consultation to move things forward.

03

ESTIMATE

PLANNING WITH CLARITY

After our visit, we prepare a high-level estimate to give you a realistic sense of the project cost. This includes key considerations like scope, timeline, and finish level. If everything looks good, we’re ready to move forward with detailed design.

05

VISUALIZATION

BRINGING IDEAS TO LIFE

We offer optional 3D renderings to help you visualize your finished space before any construction begins. This makes it easier to make confident choices around finishes, materials, and layout, and ensures we’re on the same page before final pricing.

07

CONSTRUCTION

MANAGING EVERY DETAIL

From demolition to finishes, our team manages the entire build. We handle all trades, inspections, and site coordination. You’ll get regular updates and have one clear point of contact throughout the process. Our focus is always on quality, efficiency, and communication.

02

SITE EVALUATION

UNDERSTANDING YOUR SPACE

At your home, we take measurements, assess existing conditions, and explore potential layout options. We’ll also walk through your goals, priorities, and inspiration. This helps us establish an early planning budget and ensures we’re aligned before moving into design.

04

DESIGN & RETAINER

MAPPING OUT THE DETAILS

We dive into design by gathering more precise site data and refining your layout. During this stage, we collect a retainer to begin working on floor plans, engineering documents, and permit requirements — everything needed to get your project off the ground.

06

SCOPE & CONTRACT

ALIGNING ON COMMITMENT

Once your design is finalized and selections are made, we present a fixed-price construction contract. It outlines every detail of the build so there are no surprises. When the contract is signed and permits are in hand, we’re ready to break ground.

08

FINAL WALKTHROUGH

DELIVERING WITH CONFIDENCE

Once construction wraps, we walk through the home together to ensure everything is completed to your standards. Any final touch-ups are handled promptly. Our goal is simple — to leave you with a space you’re proud of, and a process you’d recommend.

5 Reasons Why Durham Homeowners Choose Jarvis 

✅ Detailed Quotes, No Surprises

Upfront pricing and clear scopes so you know exactly what to expect.

✅ We Handle Permits & Plans
Drawings, zoning, and approvals, all taken care of in-house.

✅ Licensed & Insured Crew
Skilled, certified trades with 25+ years of local experience.

✅ Two-Year Warranty
We stand behind every project long after it’s complete.

✅ Additions That Blend In
Built to match your home’s layout, flow, and character, no patchwork look.

“We added a full second storey to our bungalow and couldn’t be happier. Jarvis took care of the entire process, permits, drawings, everything, and finished right on schedule. Our home finally has the space we need without leaving our neighborhood.”

— Laura M., Whitby

“Jarvis built an in-law suite above our garage for my parents and it turned out amazing. The space looks like it was always part of the home. Their crew was respectful, efficient, and kept everything clean. Highly recommend!”

— Priya S., Oshawa

“We wanted more natural light and space to relax, and Jarvis delivered the perfect sunroom. They helped us design it to blend with our home and handled all the permits and inspections. It’s now the favorite spot in our house.”

— Emily T., Ajax

“We converted our unused garage into a bright home office and guest space. Jarvis made it easy from start to finish — super organized and great communication. The workmanship is excellent.”

— Carlos R., Pickering

Past Addition Projects

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