Top-rated second story addition builders.

Get matched with top second story addition builders in Allendale, NJ

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Second story addition builders in Allendale

Avatar for AJ Perri

AJ Perri

4.31(
1,535
)

AJ Perri

4.31(
1,535
)
Customers say: Super punctual
55 years of experience

For fast and exceptional service for all of your heating, cooling or plumbing needs, call us now: 732-333-3655! Since 1971, A.J. Perri has been proudly serving New Jersey homeowners and businesses across Bergen*, Essex, Mercer, Middlesex, Monmouth, Morris*, Ocean*, Somerset, Passaic*, Hudson*, Sussex*, and Union counties. With over 50 years of experience in heating, air conditioning, plumbing, and indoor air quality systems, A.J. Perri stands behind every installation, service and product with an unmatched 100% satisfaction guarantee. A.J. Perri offers you peace of mind and an established reputation for reliability, quality, and excellence in customer service. You can trust A.J. Perri to take care of your furnace, air conditioner or plumbing repair, service, or replacement. A.J. Perri can also help you with your heat pump, air handler, ductless split system, water heater or purification, sump pump, air cleaner, air filtration system, humidifier, and air ducts. Contact us if you have any questions about service in your area. Service offered 24/7/365. For more information: call or email us at info@ajperri.com. *Additional info: Not all services available in all areas. License# 19HC00103100, 36BI01256600, PA- PA126178

"Used AJ Perri in past satisfactorily but now... Furnace checkup rattling sound, tech said was due to inducer fan motor needs replacing (ball bearings). Signed agreement for $2,300, they were going to order a replacement, paid $1,175 deposit. Cancelled work before the tech left as we were going to have it done later - also looked up the cost of said motor on the manufacturer web site only $209! Billing department unavailable to have the "pending" charge removed from checking acct. Found cancellation form in paperwork, only includes mailing address with a 3 day only grace period (?). Unable to fax form as a fax # (on a different form only) just rings & rings. Had to scan and email form to general "info" address. Unable to get through to billing dept, never available. Given direct phone # for said dept which gives a recording "voice mailbox not set up" then disconnects. Homeowner fixed all rattling noises for $0 - was only loose screw inside fan motor mounting bracket. Not refunded yet."

Cathy L on December 2025

For fast and exceptional service for all of your heating, cooling or plumbing needs, call us now: 732-333-3655! Since 1971, A.J. Perri has been proudly serving New Jersey homeowners and businesses across Bergen*, Essex, Mercer, Middlesex, Monmouth, Morris*, Ocean*, Somerset, Passaic*, Hudson*, Sussex*, and Union counties. With over 50 years of experience in heating, air conditioning, plumbing, and indoor air quality systems, A.J. Perri stands behind every installation, service and product with an unmatched 100% satisfaction guarantee. A.J. Perri offers you peace of mind and an established reputation for reliability, quality, and excellence in customer service. You can trust A.J. Perri to take care of your furnace, air conditioner or plumbing repair, service, or replacement. A.J. Perri can also help you with your heat pump, air handler, ductless split system, water heater or purification, sump pump, air cleaner, air filtration system, humidifier, and air ducts. Contact us if you have any questions about service in your area. Service offered 24/7/365. For more information: call or email us at info@ajperri.com. *Additional info: Not all services available in all areas. License# 19HC00103100, 36BI01256600, PA- PA126178

"Used AJ Perri in past satisfactorily but now... Furnace checkup rattling sound, tech said was due to inducer fan motor needs replacing (ball bearings). Signed agreement for $2,300, they were going to order a replacement, paid $1,175 deposit. Cancelled work before the tech left as we were going to have it done later - also looked up the cost of said motor on the manufacturer web site only $209! Billing department unavailable to have the "pending" charge removed from checking acct. Found cancellation form in paperwork, only includes mailing address with a 3 day only grace period (?). Unable to fax form as a fax # (on a different form only) just rings & rings. Had to scan and email form to general "info" address. Unable to get through to billing dept, never available. Given direct phone # for said dept which gives a recording "voice mailbox not set up" then disconnects. Homeowner fixed all rattling noises for $0 - was only loose screw inside fan motor mounting bracket. Not refunded yet."

Cathy L on December 2025


Avatar for Jonathan Alexander & Sons Moving

Jonathan Alexander & Sons Moving

No reviews yet

Jonathan Alexander & Sons Moving

No reviews yet
51 years of experience

Alexander & Son's Moving has over 30 years of experience in the moving industry. We are a professional family owned business that will handle your items with care from beginning to end. We will make the relocation process an easy one. We have reputable references, please contact us for more information.

Alexander & Son's Moving has over 30 years of experience in the moving industry. We are a professional family owned business that will handle your items with care from beginning to end. We will make the relocation process an easy one. We have reputable references, please contact us for more information.


VJP Construction Inc

No reviews yet

VJP Construction Inc

No reviews yet
Free onsite estimate

All-tech Carpentry Contractors, LLC

No reviews yet

All-tech Carpentry Contractors, LLC

No reviews yet
37 years of experience

Residential and commercial framing contractor. The first NAHB certified framing contractor in the United States. Winner of the NAHB's 2003 Silver Award.

Residential and commercial framing contractor. The first NAHB certified framing contractor in the United States. Winner of the NAHB's 2003 Silver Award.


Compass Building Corporation

No reviews yet

Compass Building Corporation

No reviews yet
33 years of experience

A complete home improvement contractor. No job is too large or too small. We offer free estimates/quotes. For new construction we utilize our sister company, All-tech Carpentry Contractors LLC, the first NAHB certified framing contractor and silver award winner in the United States. Compass is a registered home improvement contractor in the states of New Jersey, Lic. No. 13VH03987500 and Pennsylvania, Lic. No. PA057811. licensed in NJ and PA

A complete home improvement contractor. No job is too large or too small. We offer free estimates/quotes. For new construction we utilize our sister company, All-tech Carpentry Contractors LLC, the first NAHB certified framing contractor and silver award winner in the United States. Compass is a registered home improvement contractor in the states of New Jersey, Lic. No. 13VH03987500 and Pennsylvania, Lic. No. PA057811. licensed in NJ and PA


RB PAVERS OF NY INC.

No reviews yet

RB PAVERS OF NY INC.

No reviews yet

Family owned company. Hardscaping pavers, blue stone walkways and steps, Any masonry jobs.

Family owned company. Hardscaping pavers, blue stone walkways and steps, Any masonry jobs.


Avatar for Phillip Jennings General Contractor

Phillip Jennings General Contractor

5.00(
5
)

Phillip Jennings General Contractor

5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

General Contractor/Remodeler, with expertise in the areas of commercial and residential renovations. Performs scope of work as developed under the International Building and Residential Codes. Effectively able to direct, managed and complete renovation projects. Established 1989, licensed and insured commercial and residential renovationist. Cetifired: EPA Renovator and NJ MBE.

General Contractor/Remodeler, with expertise in the areas of commercial and residential renovations. Performs scope of work as developed under the International Building and Residential Codes. Effectively able to direct, managed and complete renovation projects. Established 1989, licensed and insured commercial and residential renovationist. Cetifired: EPA Renovator and NJ MBE.


Avatar for Nemera Inc

Nemera Inc

No reviews yet

Nemera Inc

No reviews yet
19 years of experience

NEMERA INC. Waste Hauling and Cleaning Services (License and Insured) NEED HELP CLEANING OUT AND ORGANIZING YOUR HOME OR BUSINESS? "WE REMOVE IT... WE CLEAN IT... WE DO IT... ALL OF IT". Whether your house OR BUSINESS is getting a little cluttered, OR your dealing with some serious construction debris! We haul your junk away! Nemera Inc. can remove all the RUBISH from your home and or business. We provide a wide range of services in cleaning and junk removal, junk hauling, and demolition. Nemera Inc. is the company that can take care of all your cleaning and junk removal, will pick up your junk and we make it easy! Prices vary from each load. Save by bringing all your junk to the front. WE RECYCLE! WE DONATE! WE DISPOSE! SAME DAY/ NEXT DAY SERVICE AVAILABLE! PROFESSIONAL AND RELIABLE LOW UPFRONT PRICING! We also paint and do minor repairs that are included in the same "hauling" package deal. Junk Trash Appliances Furniture Computers Demolition Yard/ Garden Debris Construction Debris Garage Cleanouts Estate Cleanouts Attic Cleanouts Shed Removal Tree Removal Storage Unit Cleanout ..... And much more. Please contact Myriam to schedule a FREE Quote. Thank you for looking.

NEMERA INC. Waste Hauling and Cleaning Services (License and Insured) NEED HELP CLEANING OUT AND ORGANIZING YOUR HOME OR BUSINESS? "WE REMOVE IT... WE CLEAN IT... WE DO IT... ALL OF IT". Whether your house OR BUSINESS is getting a little cluttered, OR your dealing with some serious construction debris! We haul your junk away! Nemera Inc. can remove all the RUBISH from your home and or business. We provide a wide range of services in cleaning and junk removal, junk hauling, and demolition. Nemera Inc. is the company that can take care of all your cleaning and junk removal, will pick up your junk and we make it easy! Prices vary from each load. Save by bringing all your junk to the front. WE RECYCLE! WE DONATE! WE DISPOSE! SAME DAY/ NEXT DAY SERVICE AVAILABLE! PROFESSIONAL AND RELIABLE LOW UPFRONT PRICING! We also paint and do minor repairs that are included in the same "hauling" package deal. Junk Trash Appliances Furniture Computers Demolition Yard/ Garden Debris Construction Debris Garage Cleanouts Estate Cleanouts Attic Cleanouts Shed Removal Tree Removal Storage Unit Cleanout ..... And much more. Please contact Myriam to schedule a FREE Quote. Thank you for looking.


GJW Construction, LLC.

5.00(
1
)

GJW Construction, LLC.

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

★HOME IMPROVEMENT SPECIALIST★Reliable Licensed contractor with 20 years experience. Specializing in home improvements and repairs. Quality Work and Fair prices : Including: Kitchen and bathroom remodels, plumbing and electrical repairs, sheet rock and taping, paint, tile, flooring, all phases of carpentry, handyman work, property management, and more. All work completed in a neat and orderly fashion. If you are interested in speaking with us about your next Project Contact us today GJW CONSTRUCTION, LLC

★HOME IMPROVEMENT SPECIALIST★Reliable Licensed contractor with 20 years experience. Specializing in home improvements and repairs. Quality Work and Fair prices : Including: Kitchen and bathroom remodels, plumbing and electrical repairs, sheet rock and taping, paint, tile, flooring, all phases of carpentry, handyman work, property management, and more. All work completed in a neat and orderly fashion. If you are interested in speaking with us about your next Project Contact us today GJW CONSTRUCTION, LLC


American Custom Contractors

No reviews yet

American Custom Contractors

No reviews yet
25 years of experience

American Custom Contractors, LLC is a fully licensed and insured construction company located in Jackson, NJ. American Custom Contractors, LLC is an exclusive specialty company that offers professional service on all levels of property maintenance, interior and exterior design, home or office buildings improvements, and new construction both residential and commercial.

American Custom Contractors, LLC is a fully licensed and insured construction company located in Jackson, NJ. American Custom Contractors, LLC is an exclusive specialty company that offers professional service on all levels of property maintenance, interior and exterior design, home or office buildings improvements, and new construction both residential and commercial.

...
Showing 1-10 of 1007
FAQs for second story addition building service projects in Allendale, NJ

For many homeowners, building up is worth the expense because it provides the extra bedrooms or living areas that can’t be accommodated within the existing footprint. A larger, updated home often commands a higher resale price, recouping a sizable share of the project cost while allowing you to stay in the neighborhood you love. Run the numbers with a real estate agent and contractor to ensure the expected return and day-to-day benefits align with your goals.

Whether it makes more sense to build up or out depends on your lot, budget, and local code. Building up preserves yard space and involves less foundation work, but you may need to vacate the home during construction. Building out avoids staircases and can proceed while you stay put; however, it encroaches on the yard and may face setback limits. Compare both options with your contractor before making a decision.

A structural engineer will first inspect the existing foundation for cracks, footings, and load capacity. Depending on the findings, the crew may pour new concrete footings, install steel or concrete piers, add reinforced beams, or tie additional rebar into the slab. These upgrades redistribute the weight of the new floor and bring the structure up to code. Your contractor will outline the specific reinforcement plan and timeline once the engineering report is complete.

The Allendale, NJ homeowners’ guide to second story addition building services

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