BlackDog Builders offers full-service ADU design/build solutions, handling design, permitting, and construction under one roof. Specializing in detached ADUs, backyard cottages, in-law suites, and granny flats, they back projects with a 3-year warranty.

BlackDog Builders, Salem, NH

About BlackDog Builders

ADU Design/Build Services by BlackDog Builders

BlackDog Builders offers a full-service design/build approach for accessory dwelling units (ADUs), guiding clients through every phase of the process. Their goal is to create a clear, organized, and predictable experience from the initial consultation through to project completion. As an ADU contractor and ADU builder, BlackDog Builders handles both the design and construction sides under one roof, which helps streamline communication and accountability throughout the project.

Design, Planning, and Project Management

Every accessory dwelling unit project at BlackDog Builders starts with thorough design and upfront planning. They evaluate the property, zoning regulations, and site conditions before working with the client to define project goals, establish a realistic budget range, and develop a layout suited to the client's needs. This early planning phase is intended to reduce surprises during construction and ensure the ADU is designed with clear intent.

Project management is handled entirely by their team. BlackDog Builders coordinates permitting, engineering, scheduling, and ongoing communication, so clients are not left managing multiple consultants or contractors on their own. Dedicated project managers and lead carpenters keep the project organized and ensure consistent communication throughout the build.

Full-Scope ADU Construction

As a detached ADU builder and full-scope ADU contractor, BlackDog Builders executes the established plan using experienced carpenters and long-term trade partners. Their construction process emphasizes consistent craftsmanship and clear accountability from start to finish.

Completed ADU projects are backed by an industry-leading three-year warranty, providing clients with longer-term assurance after the build is done. This warranty coverage sets them apart from many other accessory dwelling unit builders in the market.

Whether the project involves a backyard cottage, an in-law suite, a granny flat, or another type of ADU, BlackDog Builders brings a structured, design-build methodology to each project. Their integrated approach — combining design, planning, and construction — is intended to give homeowners a more cohesive and manageable building experience.

Services

BlackDog Builders performs the following services

  • Architecture & Design
  • Permit Specialist
  • Construction
  • Feasibility & Site Assessment

BlackDog Builders Reviews

Eric Epstein

2026-03-01
"We really enjoyed working with Blackdog. Our designer, John, was incredibly knowledgeable, thoughtful, and most importantly patient through our twists and turns of design preferences and timing. When we ultimately pulled the trigger on the project, the team was thoroughly professional, overdelivered on timing expectations, and did a fantastic job. Bree was a stellar project manager and made sure that everything came out as planned and tied up any loose ends. Blackdog was more expensive than some alternatives, but the professionalism and peace of mind that the job was turnkey, done quickly and to perfection made it clearly the right choice - and we're thrilled we made it!"

Frank D

2026-01-14
"We hired Black Dog to build a master suite bedroom, full bath, walk in closet along with removing a huge chimney and replacing with a gas fireplace. The team was quite amazing across the board: design, build, estimated timeline for completion, communication and execution. Melissa was extremely helpful with us and created multiple different designs for us to envision, all of which were different than what we were originally planning, and all of them better. As we settled on a final design, Melissa provided a detailed quote and went through it all line by line with us to ensure we had clarity and had opportunities to ask questions, adjustedit, etc. Upon signing, Sebastian was assigned as our lead carpenter that would be dedicated to our project for the entire duration. He was extremely friendly, knowledgeable and meticulous when it comes to details. Sebastian was with us every day and kept everything on schedule. As with any project, unforeseen issues arise, and when they did Sebastian took every one of them with ease and creativity. He is an on-the-spot problem solver and only pursues top quality solutions, no cutting corners, which was amazing to see. He is passionate about his work and cares about the craftsmanship that it represents. Jason was our project manager throughout, helping to ensure proper alignment and timing of the different stepsphases of the project. Black Dog was very responsive and consistently communicated throughout the job. They finished the job exactly on schedule and we could not be happier! We highly recommend Black Dog for your home project. If you want high quality work and a team you can reach and work with throughout the project, Black Dog is your choice. And if you can get Sebastian as your lead carpenter, you will be amazed!"

Wayne

2026-01-12
"Black Dog recently completed two major projects in my home a full master bathroom remodel and, later, a complete kitchen renovation and I couldnt be more pleased with the results. From the very beginning, their process stood out. They took the time to meet in advance, walk through the details, and make sure every aspect of the project was clearly understood. Their design knowledge, thoughtful recommendations, and overall professionalism made the planning stage both easy and enjoyable. We were living in the home throughout the renovations, and the crew went out of their way to make the experience as smooth and minimally disruptive as possible. Their respect for our space and daily routine was truly appreciated. The entire process from selecting finishes and products to the final walkthrough was handled with care and expertise. The craftsmanship is excellent, and the finished spaces exceeded our expectations. We are extremely satisfied with both the journey and the outcome. I highly recommend Black Dog to anyone looking for quality work, strong communication, and a team that genuinely cares about delivering a great result."

John Burtis

2025-12-12
"A few years back, my wife advised me that she was weary of cleaning snow and ice from her auto before going to work. This request began my association with Black Dog builders. We asked for a garage to be connected to our farmers porch via a breeze way. Due to code issues in order to access our propane tanks it had to remain open and the difference in elevations had to be accounted for. Additionally the emergency generator panel had to be installed next to the new main switch in the garage. We worked with John Nicholson on the design, and were very happy, with photos of the design and final work appearing below. Needless to say, we are extremely happy with the superb materials and the workmanship. Oh, yes, my wife remains very very happy. And, of course, she uses the parking spot closest to the house. Id have it no other way!"

Steven Quinn

2024-07-21
"We hired Blackdog to design and renovate our kitchen. Our designer, Melissa, worked with us over a period of several months to get our design to exactly where we wanted it - and we are thrilled with the results. Once the design was complete and the schedule set, Blackdog went into action. Jason was our project manager and met with us on-site once a week to make sure the project stayed on track and was meeting our expectations. Our lead carpenter was Dave; his work was excellent. He was punctual and was forward thinking, avoiding potential issues. The subcontractors that Blackdog selected were excellent - particularly the plumbers, electricians, and drywallers. Everyone on-site was respectful and helpful answering our questions along the way. Another important plus was Blackdog and all subcontractors cleaned up the project site daily. This was particularly important since we remained in the house for the entire renovation and our kitchen is located right in the middle of the house. Our project was completed on schedule and on budget. Their work is excellent, and their process is very effective. All in all, it was a good experience."

Specifics

Opening hours

Monday 9:00AM - 5:00PM
Tuesday 9:00AM - 5:00PM
Wednesday 9:00AM - 5:00PM
Thursday 9:00AM - 5:00PM
Friday 9:00AM - 5:00PM
Saturday -
Sunday -

Location

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