Top 10 General Contractors in Londonderry, NH

Porch Pro Headshot BCS & Sons Construction
General Contractors
Serves Londonderry, New Hampshire
"Shawn and his crew from BCS & Sons Construction are nothing short of amazing! Shawn saved me from a Kitchen Nightmare! Another contractor hacked us badly and didnt even pull a permit. Shawn went above and beyond to make sure evertyhing was done correctly and done to code! When other contractos turn...Read more about BCS & Sons Construction
100% response rate
"Shawn and his crew from BCS & Sons Construction are nothing short of amazing! Shawn saved me from a Kitchen Nightmare! Another contractor hacked us badly and didnt even pull a permit. Shawn went above and beyond to make sure evertyhing was done correctly and done to code! When other contractos turn...Read more about BCS & Sons Construction
Porch Pro Headshot HiTech Windows & Siding Installations, Inc
General Contractors
Serves Londonderry, New Hampshire
Welcome to Hi-Tech Windows & Siding, a second-generation family-owned contracting company specializing in a wide range of home remodeling services. Using only the highest quality materials available, we add lasting beauty and value to homes in and around Boston. Our replacement windows are second to...Read more about HiTech Windows & Siding Installations, Inc
Welcome to Hi-Tech Windows & Siding, a second-generation family-owned contracting company specializing in a wide range of home remodeling services. Using only the highest quality materials available, we add lasting beauty and value to homes in and around Boston. Our replacement windows are second to...Read more about HiTech Windows & Siding Installations, Inc
Porch Pro Headshot Aguia Home Service
General Contractors
Serves Londonderry, New Hampshire
(20)
Aguia Home Service-General contractor and a company that guarantees quality, commitment, affordable prices, with 15 years of experience, we carry out all your project with professionalism without making you leave your work, family or appointments, we start and finish properly in the way you imagine....Read more about Aguia Home Service
Aguia Home Service-General contractor and a company that guarantees quality, commitment, affordable prices, with 15 years of experience, we carry out all your project with professionalism without making you leave your work, family or appointments, we start and finish properly in the way you imagine....Read more about Aguia Home Service
Porch Pro Headshot Sigurdsson Construction
General Contractors
Serves Londonderry, New Hampshire
(4)
Sigurdsson Construction understands the importance of speed to market and we are adept at managing condensed construction schedules and tight turnaround times. We manage the construction of small to large-scale projects providing a full range of construction services. We've created extraordinary exp...Read more about Sigurdsson Construction
Sigurdsson Construction understands the importance of speed to market and we are adept at managing condensed construction schedules and tight turnaround times. We manage the construction of small to large-scale projects providing a full range of construction services. We've created extraordinary exp...Read more about Sigurdsson Construction
Porch Pro Headshot Gil Cartier
General Contractors
Serves Londonderry, New Hampshire
(2)
"We just cannot say enough good things about Gil Cartier. If you are doing any sort of home improvement job, Gil is the guy you want. We recently renovated a completely gutted house in Hampton, NH. We used multiple contractors for different parts. Gil actually took the final phase of the proje...Read more about Gil Cartier
"We just cannot say enough good things about Gil Cartier. If you are doing any sort of home improvement job, Gil is the guy you want. We recently renovated a completely gutted house in Hampton, NH. We used multiple contractors for different parts. Gil actually took the final phase of the proje...Read more about Gil Cartier
Porch Pro Headshot Construction Tech LLC
General Contractors
Serves Londonderry, New Hampshire
(52)
Construction Tech’s residential division can handle any project you may have. From small repairs up to large design build projects.
Construction Tech’s residential division can handle any project you may have. From small repairs up to large design build projects.
Porch Pro Headshot T.Pereira Construction
General Contractors
Serves Londonderry, New Hampshire
Welcome to T.Pereira Construction. We are a locally owned and operated company, specializing in additions and remodels. At T.Pereira Construction, we offer residential and commercial contracting services. T.Pereira Construction, does all bathroom remodel, kitchen remodel, remodel to accommodate a di...Read more about T.Pereira Construction
Welcome to T.Pereira Construction. We are a locally owned and operated company, specializing in additions and remodels. At T.Pereira Construction, we offer residential and commercial contracting services. T.Pereira Construction, does all bathroom remodel, kitchen remodel, remodel to accommodate a di...Read more about T.Pereira Construction
Porch Pro Headshot J. Delaney General Contracting
General Contractors
Serves Londonderry, New Hampshire
(19)
Jack Delaney General Contracting entered into business in 1985. With years of experience improving the homes of our community, we combine skilled craftsmanship with hardworking dedication to give your project the attention and care it deserves. You tell us your design ideas and we'll bring them to l...Read more about J. Delaney General Contracting
Jack Delaney General Contracting entered into business in 1985. With years of experience improving the homes of our community, we combine skilled craftsmanship with hardworking dedication to give your project the attention and care it deserves. You tell us your design ideas and we'll bring them to l...Read more about J. Delaney General Contracting
Porch Pro Headshot Carpenters on the Level
General Contractors
Serves Londonderry, New Hampshire
(2)
Carpenters on the Level is a full-service building and remodeling company based in Tyngsboro, Massachusetts. We serve the northeast area of Massachusetts as well as many southern New Hampshire communities. We were founded in 1988 with the vision of fulfilling the small job market but since the early...Read more about Carpenters on the Level
Carpenters on the Level is a full-service building and remodeling company based in Tyngsboro, Massachusetts. We serve the northeast area of Massachusetts as well as many southern New Hampshire communities. We were founded in 1988 with the vision of fulfilling the small job market but since the early...Read more about Carpenters on the Level
Porch Pro Headshot Brothers Realty & Construction
General Contractors
Serves Londonderry, New Hampshire
Brothers Realty and Construction provides a one-stop shop for all your home services needs. Our motto is to treat our customers like family. We go above and beyond to exceed expectations and make sure you are thrilled with the results.
Brothers Realty and Construction provides a one-stop shop for all your home services needs. Our motto is to treat our customers like family. We go above and beyond to exceed expectations and make sure you are thrilled with the results.

Frequently asked questions about general contractors

A general contractor oversees building and remodeling projects from start to finish. Their main priority is making sure that a project progresses according to the schedule, is on budget, and that all work is done properly. All other contractors and workers answer to the general contractor and they answer to the client who hired them.

Start by getting bids from different contractors. Bids lay out your expected cost and the extent of the project, including materials, labor, and when the project will be done. If you have a local contractor in mind, feel free to work with them in negotiating the terms of a bid, rather than putting out a competitive bid request. Terms typically outline payment installments, an expected timeline for milestones, and the expected outcome at each phase of the project.

Once you've signed the contract with the general contractor, they bring in the workers and begin on the project. Throughout the course of the project, the general contractor manages all workers and subcontractors. General contractors generally own or work for a company that handles one or two aspects of building and remodeling. Very few do framing, finishing, electrical, concrete, plumbing, and landscaping on their own. So, it's quite common for general contractors to outsource work from other companies. The general contractor handles the hiring of these subcontractors, as well as paying them and their own workers. You only have to worry about paying the general contractor.

Hiring multiple subcontractors for a job might seem more economical, but it would put much of the decision-making on you. What you might save in money may be offset by the amount of time and mental energy you'd have to put into the project. An experienced general contractor knows the ins and outs of the construction business. They understand how to structure a project and work with subcontractors to get projects completed safely, and on schedule. This leaves the day-to-day decisions to someone with more experience.

The licensing rules in some states require hiring a general contractor for certain projects. If the state doesn't require a general contractor in your case, it makes good sense to hire a licensed and insured local contractor.

General contractors live by their reputation. They work hard to build trust with their clients and honor that trust through their management of construction projects. Even if they never lift a hammer during the course of a job, they feel a great sense of ownership of the whole operation.

General contractors usually have a vast knowledge of local building codes. Their understanding of construction and people management helps all subcontractors to work together. They see how each piece fits together to make a completed project. Subcontractors may take a narrow view of their role, which could cause problems for other subcontractors working on the next step. General contractors work closely with their crews, subcontractors, and you to prevent costly miscommunication.

Whether you're hiring a home contractor to build your dream house or searching "general contractors in my area" to oversee a remodel project, you'll be working closely with whomever you choose.

When you get underway with your contractor, you'll begin by sorting out every possible detail. Before work begins, the contractor will work out a project plan with you. The project plan may include determining fixtures, finishes, and furnishings — to avoid any cost gaps in the initial bid. The more specific you are, the more realistic and accurate the bid will be.

Make sure it’s OK to call or text your contractor throughout the day. Even if they aren't always available, they should provide you with contact information for a lead person or someone else you can discuss the project with. When possible, visit the job site. This gives the contractor or lead the opportunity to bring up any issues and ask any questions about specifics that weren't covered in the project plan.

It's also helpful to keep a project journal. Write down product order numbers. Jot down questions and ideas, and note delivery dates. This can make it easier to sort out any disputes that may arise later. Track any changes to the initial project plan in writing. If unforeseen changes occur, make sure to get a bid change in writing.

Other helpful tips:

  • Check on work as it progresses
  • Pay only for completed work
  • Be a fair customer by paying bills on time, responding quickly to questions, and treating your contractor and their workers fairly
  • Know the workers’ names, and make sure they have what they need
  • Establishing a good working relationship with your contractor from the beginning will lead to a more successful project

Some general contractors charge a flat fee. Most charge a markup, which is a percentage of the overall completed project cost. The markup amount covers their overhead, including advertising, insurance, office expenses, and their own salary. The contractor should outline all payments and expenses in the contract at the outset.

Contractors typically ask for a percentage of the total project cost upfront. This initial fee covers the cost of getting the project started, provides workers with their wages for the first phase of the construction, and helps serve as a deposit for the needed materials and supplies. Fifteen percent is a fair and decent initial payment for getting a project started. Most states cap this initial fee at 33%, and a good contractor should have good enough credit to cover remaining up-front costs.

After each phase or "milestone" gets completed, your contract will likely require you to pay more money toward the project. These installments are an expected part of the construction process to cover wages, additional supplies, and materials the contractor may need to continue. Even the most well-off contractor would quickly run out of money to move forward if they didn't include installment payments into their contracts.

A big project is a costly endeavor and a long-term investment. When choosing a general contractor, it makes sense to look beyond just the contractor’s fee. Be sure to hire someone that can provide proof of licensing, insurance, and references. Take the time to look into their track record. A good general contractor will leave a trail of stellar online reviews, and when you talk to former clients, they'll have only good things to say. When you enter a project with a contractor, you need a pro you trust with your home, so it’s wise to do your homework ahead of time to ensure a successful outcome.

Begin with a plan that lays out the scope of the remodeling work you want done. By the time you hire a contractor, you should have decided on materials, fixtures, appliances, and other items. If you've decided on any changes to the floor plan, be sure to add the specifics to your plan. The more details, the better. Add everything you can think of, down to the brass pulls for the kitchen cupboards.

Once you have this plan, start talking to contractors to get estimates and formal bids. Ask around for local contractor recommendations at your local hardware store, or go online and read client reviews. Good contractors tend to be very busy, so expect a waiting period from the time you contact them to the time they can start on the project. Be sure to seek out a contractor with experience in the job you need done. If you need a patio installed, scroll past them if they specialize in kitchens and baths.

When speaking to the contractor, make sure you're clear on which parts of the project the contractor will handle and which will go to a subcontractor. Ask for proof of licensing, insurance, and any relevant subcontractors' licenses. Check contractor credentials with your local Better Business Bureau.

Only sign a detailed contract, and be sure you understand every detail of the contract before signing. Be sure to get the proper permits for your project. A good contractor will be able to talk you through getting permits. In some places, contractors are able to get the permits themselves. Check in with the contractor regularly during the course of the project to avoid errors and miscommunication.

Searching online for "good general contractors near me" or getting referrals from a hardware or home improvement store is a first step to hiring a contractor. Take certain precautions before hiring a contractor to prevent costly headaches later on.

Begin by working with a professional architect or designer who's able to provide all the information a contractor will need. A designer or architect can also create the necessary drawings to submit for obtaining a permit. Include details like finishes, fixtures, plumbing work, electrical installations, and possible millwork.

Come up with a specifications list in advance. Write down the details of every element you want placed into the project, from the front door to the floor tiles that you want. Calculate to make sure all your selections fall within your budget and meet your personal requirements.

Make sure your contractor has the proper licensing and insurance. Check out a potential contractor’s previous work. They should be able to offer examples. When you interview contractors, remember that you'll spend a lot of time working with this person. You need to feel you can trust them because unexpected situations are bound to come up. Perhaps you didn't consider what style of door handle you want for the master bathroom, or the carpet you selected for the living room is no longer available. These types of situations happen with any project, so do your best to remain patient throughout the construction process.

See to it that your contractor provides a timeline that they can stick to and that works with your needs. Get a list of subcontractors they use, and look into their history. Use careful consideration when choosing your contractor for the most successful outcome.

Be sure your general contractor is licensed and insured. They should have both contractor’s liability insurance and worker’s compensation insurance. An insured contractor will take responsibility for the project and for anything that happens at the worksite. Make sure their insurance covers any subcontractors or that they only work with insured third parties.

Ask for proof of insurance right away. Hiring an uninsured contractor may seem less expensive, but it could cost you down the road. In the event of a job-site injury or property damage, a properly insured contractor will shield you from potentially catastrophic costs. Depending on the state you live in, if a worker is injured on your property and their general contractor didn't carry the proper insurance, you might be liable for the cost of treating their injuries.

Homeowners’ insurance policies cover property damage. Some also cover limited injury liability, but these policies have limitations. Even in the unlikely event that your policy covers 100 percent of liability, your premiums would most certainly go up. Contractors insurance ensures that you don't have to cover any costs unrelated to the project completion itself.

If a contractor is reliable, they'll be licensed and carry insurance, and if they don't have a license, no company will insure them. Proof of proper licensing and insurance is a sure sign of a reliable contractor.

Recent reviews for Londonderry General Contractors

198903

Construction Tech was willing to take the job of prepping an elevator shaft. No other companies wanted this job. Brandon and his crew did an outstanding job and finished the job quickly. Would definitely recommend this company

- Lorraine Edmunds
85088

As another review said, unbelievable attention to detail. They remodeled a bathroom for us that we are very happy with. Also completed several other projects for us.

- Jasmine Webster
518545

not recommend

- ryan thiel
83431

The communication and attention to detail that this company has is almost unheard of from contractors. Very very happy with them and their work.

509368

Sigurdsson Construction is a scammer's website pretending to be owned by a romance scammer from Zimbabwe named "David Jones Sigurdsson." DO NOT believe this fraud! Read the articles about him at TheDailyScam.com!

- D D
454912

Do NOT believe this is a real company! Sigurdsson Construction is a fake company being used as a front by a Romance Scammer in Harare, Zimbabwe! This company doesn't exist in Boston or anywhere else! Check out the articles about this scammer on The Daily ...

- Scam Fighters
148381

Sigurdsson Construction is a very good company and it’s affordable, they have worked for me back in Toronto

- Johnson Okon
110217

Outstanding professionalism, quality and final work product. Finished my basement and it looks fantastic. Strongly encourage asking Chris to provide a bid for any future work.

- Greg Moore
120431

Christopher came in a performed a major renovation for me, the main thrust of which was to remove load bearing walls and install LVLs etc to professionally engineered specs. Not only was the job done perfectly and efficiently, but Chris's straightforwardn...

- charles peabody
110216

Hired Chris for couple of door installations. Very professional and a hard worker. Highly recommended

- Cal Knowles
4651

Excellent to keep appointment. Excellent responsiveness in communication. Excellent work quality.

Great team and very responsive to our questions.

- Dianne Beaton
181169

Tight Knot’s work was impeccable. He worked on schedule, and the delivery of our deck exceeded our expectations. They say the devil is in the details, and his craftsmanship was worth every penny. Our home was recently cast for an HGTV renovation show an...

- Jay Todd

Everything You Need to Know About Londonderry General Contractors

How do I know that I found the right General Contractor in Londonderry for my general contractor services project?

Finding the right general contractor for your project can be stressful.... when you don't search with Porch. We've pulled together everything you need to know about General Contractor Services in Londonderry so you can have some peace of mind before starting your project.

Here’s what you need to know to choose the right general contractor in Londonderry:

  • Are they properly licensed? Londonderry has 1 licensed General Contractors Pros.
  • Are they BBB accredited? 1 pros in Londonderry are.
  • Check if they are they BBB rated: 3 are A-rated in Londonderry.
  • Is the quality worth the price? Make sure to find the general contractor that can deliver the quality you're looking for, without going way over your budget. Don't forget that every job is going to be different.
  • Speak with them over the phone: Contact multiple general contractors pros to see if you’re on the same page when it comes to your project.

Who are the best General Contractors in Londonderry?

We've found 50 general contractor providers that are available to you in Londonderry.

Keep in mind that every project has different requirements, and some general contractor professionals maybe be more equipped to handle the specifications of your general contractor services work than others. Talk to multiple general contractors before deciding which one is right for you. You will want to consider how much they charge, if they are properly licensed for general contractor services work in Londonderry, and if your project is a fit. Here are some suggested professionals and companies to get you started:

  • Williams Construction Co.
    • Location: Londonderry
  • Silver View Contracting
    • Location: Londonderry
    • Been in business since: 1999
  • J.J. Phelan & Son Co., Inc.
    • Location: Londonderry

Will General Contractor Services work in Londonderry require permits, inspections, special licenses, etc.?

Whether you’re general contractor job is in Londonderry or any other city, you're going to want to do a bit of research before hiring general contractors. Even small jobs may have certain regulations around them. Often, the general contractor performing the work will have any required permits, inspections, etc. under control, but not always. Short answer: Research yourself and double check with the general contractor services folks that everything is in order.

All General Contractors in Londonderry, NH

Porch Pro Headshot CJM Co Construction
General Contractors
Serves Londonderry, New Hampshire
(4)
We provide high quality custom renovations and remodeling services from start to finish, bringing your dream space to life!
We provide high quality custom renovations and remodeling services from start to finish, bringing your dream space to life!
Porch Pro Headshot TSN Home Services
General Contractors
Serves Londonderry, New Hampshire
* (Licensed And Insured) * TSN Home Services is a family owned home improvement business aimed on giving you the best price and quality for all your improvement needs. Through out the years of being in the field I've worked on everythin...Read more about TSN Home Services
* (Licensed And Insured) * TSN Home Services is a family owned home improvement business aimed on giving you the best price and quality for all your improvement needs. Through out the years of being in the field I've worked on everythin...Read more about TSN Home Services
Porch Pro Headshot Modern Exterior Concepts
General Contractors
Serves Londonderry, New Hampshire
Modern Exterior Concepts has been a leader in carpentry and woodworking in New England since its inception. There have been many changes in the industry since then but one thing that never changes is the need for reliable, quality craftsmanship at a competitive price. Every year our team researches ...Read more about Modern Exterior Concepts
Modern Exterior Concepts has been a leader in carpentry and woodworking in New England since its inception. There have been many changes in the industry since then but one thing that never changes is the need for reliable, quality craftsmanship at a competitive price. Every year our team researches ...Read more about Modern Exterior Concepts
Porch Pro Headshot Corporate Interiors LLC
General Contractors
Serves Londonderry, New Hampshire
We have been involved within the construction industry for over 25 years and have performed various duties in several different capacities. Because of our diverse construction background and experience we are proud to say that we have developed many positive and long lasting client relationships and...Read more about Corporate Interiors LLC
100% response rate
We have been involved within the construction industry for over 25 years and have performed various duties in several different capacities. Because of our diverse construction background and experience we are proud to say that we have developed many positive and long lasting client relationships and...Read more about Corporate Interiors LLC
Porch Pro Headshot Complete Home improvement
General Contractors
Serves Londonderry, New Hampshire
Additions kitchens baths basements carpentry painting tile handyman services etc 30yrs experience please call 978 587 4456
Additions kitchens baths basements carpentry painting tile handyman services etc 30yrs experience please call 978 587 4456
Porch Pro Headshot Tight Knot Design Build
General Contractors
Serves Londonderry, New Hampshire
(13)
Tight Knot Design Build
Tight Knot Design Build
Porch Pro Headshot JAMBCO Building-Development-Remodeling
General Contractors
Serves Londonderry, New Hampshire
(1)
We are a second generation building family! We've weathered several downturns in the market by listening to our clients. What is important to you? What questions do you have? How can we make the home building experience as positive as it should be? We understand that we work for you. Your satisf...Read more about JAMBCO Building-Development-Remodeling
We are a second generation building family! We've weathered several downturns in the market by listening to our clients. What is important to you? What questions do you have? How can we make the home building experience as positive as it should be? We understand that we work for you. Your satisf...Read more about JAMBCO Building-Development-Remodeling
Porch Pro Headshot Summit Remodeling & Construction, Inc.
General Contractors
Serves Londonderry, New Hampshire
Call us at (603) 397-3102 when you’re in need of a complete bathroom remodel or kitchen renovation, new deck or windows/siding/roofing, you can count on the professionals at Summit Remodeling & Construction, because any service that is needed to complete a quality-remodeling project, we have access ...Read more about Summit Remodeling & Construction, Inc.
Call us at (603) 397-3102 when you’re in need of a complete bathroom remodel or kitchen renovation, new deck or windows/siding/roofing, you can count on the professionals at Summit Remodeling & Construction, because any service that is needed to complete a quality-remodeling project, we have access ...Read more about Summit Remodeling & Construction, Inc.
Porch Pro Headshot RDF Construction LLC
General Contractors
Serves Londonderry, New Hampshire
Porch Pro Headshot JL masonry & construction llc
General Contractors
Serves Londonderry, New Hampshire
100% response rate
Porch Pro Headshot Scott Lavoie Construction LLC.
General Contractors
Serves Londonderry, New Hampshire
(9)
Porch Pro Headshot John Hersey All  Phase Construction
General Contractors
Serves Londonderry, New Hampshire
(1)
Porch Pro Headshot Valenti Home Improvement
General Contractors
Serves Londonderry, New Hampshire

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