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Find Addition to existing structure builders in Hanover

Berry Hill Construction

4.30(
42
)
Approved Pro

Berry Hill Construction

4.30(
42
)
Approved Pro
Customers say: Terrific value
13 local quotes requested
21 years of experience

At Berry Hill Construction, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Great job, and price couldn't be beat."

Thomas D on August 2021

At Berry Hill Construction, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Great job, and price couldn't be beat."

Thomas D on August 2021


Potwin Construction, LLC Builder Of Quality Homes

4.25(
6
)
Approved Pro

Potwin Construction, LLC Builder Of Quality Homes

4.25(
6
)
Approved Pro
Customers say: Quick response
10 local quotes requested
24 years of experience

With 34 years experience in the business, I pride myself on my professionalism, as well as my ability to complete each project to the homeowner's satisfaction. We handle Windsor county and surrounding areas. Call today!

"Would not recommend. Blew me off for over a month and a half after a verbal agreement for a job and then changed his price and told me he would only do it for double what a competitorâ s quote was. Dishonest and unprofessional."

Nick M on August 2024

With 34 years experience in the business, I pride myself on my professionalism, as well as my ability to complete each project to the homeowner's satisfaction. We handle Windsor county and surrounding areas. Call today!

"Would not recommend. Blew me off for over a month and a half after a verbal agreement for a job and then changed his price and told me he would only do it for double what a competitorâ s quote was. Dishonest and unprofessional."

Nick M on August 2024


Avatar for Bullrock Drywall and Framing

Bullrock Drywall and Framing

5.00(
1
)
Approved Pro

Bullrock Drywall and Framing

5.00(
1
)
Approved Pro
15 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! We accept debit and credit cards, Cash App, Zelle, and Venmo.

"Perfect job "

melva i on December 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! We accept debit and credit cards, Cash App, Zelle, and Venmo.

"Perfect job "

melva i on December 2025


Silver Snake Properties

5.00(
10
)
Approved Pro

Silver Snake Properties

5.00(
10
)
Approved Pro
Super Service Award
Customers say: Quick response
13 local quotes requested
4 years of experience

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experience every step of the way. Call us right now, no matter where you are in the planning process.

"Brandon was great to work with. He remodeled our bathroom completely. We absolutely love our new bathroom. We look forward to our next home renovation. Highly recommend "

Angela F on July 2025

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experience every step of the way. Call us right now, no matter where you are in the planning process.

"Brandon was great to work with. He remodeled our bathroom completely. We absolutely love our new bathroom. We look forward to our next home renovation. Highly recommend "

Angela F on July 2025


Avatar for EAM LLC

EAM LLC

5.00(
2
)
Approved Pro

EAM LLC

5.00(
2
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion, we work with you until the job is done. We are ethical, honest, and easy to communicate with.  Call us today you'll be pleased you did. Thank you

"Great job. Very quickly and expertly took care of deck support issues that I had. Very reasonable pricing and cost. Highly recommend."

Brian B on June 2025

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion, we work with you until the job is done. We are ethical, honest, and easy to communicate with.  Call us today you'll be pleased you did. Thank you

"Great job. Very quickly and expertly took care of deck support issues that I had. Very reasonable pricing and cost. Highly recommend."

Brian B on June 2025


Ridge Top Painting & Carpentry

4.97(
31
)
Approved Pro

Ridge Top Painting & Carpentry

4.97(
31
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
30 years of experience

With over 21 years of professional contracting experience, I am here to address any or all of your painting interior and exterior, remodeling general, roofing, carpentry, building contractor, bathroom and kitchen remodel, walk in tile showers

"Jeff Lemire was awesome to work with! He showed up on time, the price was extremely reasonable, and he was very professional throughout the whole job. He kept us in the loop the entire time, was super responsive whenever we had a question, and clearly knows his stuff. Overall, it was a great experience and I’d definitely recommend Jeff to anyone looking for reliable, quality work."

Jen H on September 2025

With over 21 years of professional contracting experience, I am here to address any or all of your painting interior and exterior, remodeling general, roofing, carpentry, building contractor, bathroom and kitchen remodel, walk in tile showers

"Jeff Lemire was awesome to work with! He showed up on time, the price was extremely reasonable, and he was very professional throughout the whole job. He kept us in the loop the entire time, was super responsive whenever we had a question, and clearly knows his stuff. Overall, it was a great experience and I’d definitely recommend Jeff to anyone looking for reliable, quality work."

Jen H on September 2025


"I was very impressed working with this company. Communication was superb right off the bat. We went over the job in detail, and it was completed perfectly. The company is very professional and pays attention to every detail. The price was good too! They also cleaned the area thoroughly and my property looks exquisite. Hire this company with confidence. Thank you!"

John C on October 2025

Good work guarantee. I love making our customer's happy

"I was very impressed working with this company. Communication was superb right off the bat. We went over the job in detail, and it was completed perfectly. The company is very professional and pays attention to every detail. The price was good too! They also cleaned the area thoroughly and my property looks exquisite. Hire this company with confidence. Thank you!"

John C on October 2025


Avatar for Sentri Homes

Sentri Homes

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Sentri Homes

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
2408 local quotes requested
2 years of experience

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.


Hazen Hill Construction LLC

5.00(
2
)

Hazen Hill Construction LLC

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Construction Management/General Contractor that offers full property management services

Construction Management/General Contractor that offers full property management services


Red Mountain Construction

No reviews yet

Red Mountain Construction

No reviews yet
23 years of experience

Residential construction and remodeling by a locally family owned and operated business. Billing is usually done by contract, with deposits up front to cover materials purchase and a small percentage of labor. Electrical, plumbing, HVAC are all performed by trusted subcontractors. Keep an eye out for promotions and special offers.

Residential construction and remodeling by a locally family owned and operated business. Billing is usually done by contract, with deposits up front to cover materials purchase and a small percentage of labor. Electrical, plumbing, HVAC are all performed by trusted subcontractors. Keep an eye out for promotions and special offers.

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FAQs for addition to existing structure building service projects in Hanover, NH

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Hanover, NH homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.