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Find Second story addition builders in Downingtown

Avatar for Sentri Homes

Sentri Homes

No reviews yet

Sentri Homes

No reviews yet
2542 local quotes requested

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.

Alpha Home Improvement LLC

5.00(
8
)

Alpha Home Improvement LLC

5.00(
8
)
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

ALPHA HOME IMPROVEMENT, LLC is a licensed and insured company. We have the old fashion belief that the customer is always right. We offer quality workmanship supported by our commitment to customer satisfaction. ALPHA HOME IMPROVEMENT, LLC has a wide range of services available. We are honest and dependable and do the job right the first time. Please look at the pictures of our past jobs. We are proud of the quality of our work, and you can be too. Please call for a free estimate.

"Alpha Home Improvement LLC did an excellent job. The price was great, quality was great and the service was great. They worked around my schedule, and when they were done you would never know they were even in the house doing work, except the fact that my upstairs is now about 4 degrees warmer. I also love the fact that Alpha, the owner, oversees all work himself. Unlike the larger companies Alpha personally makes sure everything is perfect. I will definitely be using Alpha Home Improvement LLC again for any home improvement needs we have."

Todd J on January 2018

ALPHA HOME IMPROVEMENT, LLC is a licensed and insured company. We have the old fashion belief that the customer is always right. We offer quality workmanship supported by our commitment to customer satisfaction. ALPHA HOME IMPROVEMENT, LLC has a wide range of services available. We are honest and dependable and do the job right the first time. Please look at the pictures of our past jobs. We are proud of the quality of our work, and you can be too. Please call for a free estimate.

"Alpha Home Improvement LLC did an excellent job. The price was great, quality was great and the service was great. They worked around my schedule, and when they were done you would never know they were even in the house doing work, except the fact that my upstairs is now about 4 degrees warmer. I also love the fact that Alpha, the owner, oversees all work himself. Unlike the larger companies Alpha personally makes sure everything is perfect. I will definitely be using Alpha Home Improvement LLC again for any home improvement needs we have."

Todd J on January 2018

Avatar for Banyon Construction

Banyon Construction

5.00(
13
)

Banyon Construction

5.00(
13
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Banyon Construction is a full service construction company located in Chester County Pennsylvania. We have over 50 years of collective local experience in custom residential and commercial construction. Our dedication to quality, sustainability and fair business differentiates us from what you're used to. Please call or email to discuss your next project.

Banyon Construction is a full service construction company located in Chester County Pennsylvania. We have over 50 years of collective local experience in custom residential and commercial construction. Our dedication to quality, sustainability and fair business differentiates us from what you're used to. Please call or email to discuss your next project.

Avatar for AJ Perri

AJ Perri

4.31(
1,533
)

AJ Perri

4.31(
1,533
)
Customers say: Super punctual
54 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

"I had these guys put in a heating and cooling system last June. My father is 86 years old with dementia living in this house with the nurse and the heat keeps dropping down to 58° and they tell me they can?t be out there for five days, today is Thursday and they can?t make it out there till Tuesday. I would have to say stay away from this company. "

Steve A 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

"I had these guys put in a heating and cooling system last June. My father is 86 years old with dementia living in this house with the nurse and the heat keeps dropping down to 58° and they tell me they can?t be out there for five days, today is Thursday and they can?t make it out there till Tuesday. I would have to say stay away from this company. "

Steve A on December 2025

Avatar for Michael & Son Svc Inc

Michael & Son Svc Inc

4.17(
1,667
)

Michael & Son Svc Inc

4.17(
1,667
)
Customers say: Super punctual
49 years of experience

Michael & Son is family owned & operated and has been servicing the Virginia, Maryland and Washington DC area for over 30 years. We take great pride in providing our customers with the highest quality plumbing services. Our professional and courteous staff are here to help you with whatever projects you need to get done.

"James Chaneybey was very professional and nice, very satisfied with the work he's done and would like to use him again in the future."

sharon w on August 2025

Michael & Son is family owned & operated and has been servicing the Virginia, Maryland and Washington DC area for over 30 years. We take great pride in providing our customers with the highest quality plumbing services. Our professional and courteous staff are here to help you with whatever projects you need to get done.

"James Chaneybey was very professional and nice, very satisfied with the work he's done and would like to use him again in the future."

sharon w on August 2025

Milano Home Improvement

No reviews yet

Milano Home Improvement

No reviews yet
26 years of experience

Home Improvement, Remodeling, Building

Home Improvement, Remodeling, Building

AEGermani Construction Co

No reviews yet

AEGermani Construction Co

No reviews yet

ACCURATE HOME INSPECTION SERVICES

3.00(
9
)

ACCURATE HOME INSPECTION SERVICES

3.00(
9
)
Customers say: Super punctual
47 years of experience
"They inspected our house in 2009. They missed roach traps under multiple appliances, they missed a radiator that wasn't connected, they said 10% knob & tube based on zero evidence (whole house has k&t). They've cost us > $15k. They work for your realtor, not you."

Scott C on February 2021

"They inspected our house in 2009. They missed roach traps under multiple appliances, they missed a radiator that wasn't connected, they said 10% knob & tube based on zero evidence (whole house has k&t). They've cost us > $15k. They work for your realtor, not you."

Scott C on February 2021

Wallscapes Custom Remodeling & Paint

No reviews yet

Wallscapes Custom Remodeling & Paint

No reviews yet

DURREN CONSTRUCTION SERVICES

5.00(
2
)

DURREN CONSTRUCTION SERVICES

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

OWNER-OPERATED. SUBS USED FOR LABOR. COST IS DETERMINED BY THE JOB. NO TRAVEL CHARGES. NO EXTRA CHARGE FOR AFTER HOUR SERVICES.

OWNER-OPERATED. SUBS USED FOR LABOR. COST IS DETERMINED BY THE JOB. NO TRAVEL CHARGES. NO EXTRA CHARGE FOR AFTER HOUR SERVICES.

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FAQs for second story addition building service projects in Downingtown, PA

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 Downingtown, PA 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.

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