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"Very professional, knowledgeable, courteous and very customer focused. Would definitely use their services again!"

Chris A on November 2023

Full service Radon testing and mitigation, air duct and dryer vent cleaning, and blown-in attic insulation company. We service the entire state of Delaware and eastern Maryland.

"Very professional, knowledgeable, courteous and very customer focused. Would definitely use their services again!"

Chris A on November 2023


Avatar for In and Out Home Inspections, LLC

In and Out Home Inspections, LLC

11722 Back Creek Road
4.86(
85
)
Approved Pro

In and Out Home Inspections, LLC

11722 Back Creek Road
4.86(
85
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
58 local quotes requested

Here at, In and Out Home Inspections, LLC, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Our inspector did an excellent job with inspecting the home. He proved to be knowledgeable and offered recommendations for improvements."

Maurice on October 2025

Here at, In and Out Home Inspections, LLC, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Our inspector did an excellent job with inspecting the home. He proved to be knowledgeable and offered recommendations for improvements."

Maurice on October 2025


Dr Energy Saver

115 Atlantic Ave
2.75(
4
)

Dr Energy Saver

115 Atlantic Ave
2.75(
4
)
Customers say: Super punctual
15 years of experience

Dr. Energy Saver Delaware is your prescription for lower energy bills® in Delaware & Eastern Maryland. We have helped hundreds of homeowners improve their homes comfort and health by making their homes more efficient. Our comprehensive home energy efficiency solutions are customized to fit your specific needs. From window replacement, home insulation and air conditioning (heating, cooling, and ventilation) to air sealing, attic insulation, water heaters and furnace maintenance, repair, and replacement. If you're serious about comfort and health in your home don't take a chance on singular solutions. Your family and your home deserve a total home performance efficiency plan! By evaluating your home's systems, Dr. Energy Saver Delaware can help to ensure that you're getting the best results.

Dr. Energy Saver Delaware is your prescription for lower energy bills® in Delaware & Eastern Maryland. We have helped hundreds of homeowners improve their homes comfort and health by making their homes more efficient. Our comprehensive home energy efficiency solutions are customized to fit your specific needs. From window replacement, home insulation and air conditioning (heating, cooling, and ventilation) to air sealing, attic insulation, water heaters and furnace maintenance, repair, and replacement. If you're serious about comfort and health in your home don't take a chance on singular solutions. Your family and your home deserve a total home performance efficiency plan! By evaluating your home's systems, Dr. Energy Saver Delaware can help to ensure that you're getting the best results.


Avatar for '58 Foundations & Waterproofing

'58 Foundations & Waterproofing

665 DAWSON DR
4.26(
35
)

'58 Foundations & Waterproofing

665 DAWSON DR
4.26(
35
)
Customers say: Super punctual
67 years of experience

For more than 60 years, ’58 Foundations & Waterproofing has provided the highest-quality basement waterproofing, crawlspace encapsulation, radon mitigation, mold removal and foundation repair solutions for homes and commercial properties. We lead with a promise of Trusted Five-Star Service, which means the customer experience is at the center of everything we do. Since 1958, we have been steadfast in keeping this promise and in upholding the values on which '58 Foundations was built: trust, teamwork, integrity, respect and communication. This comes across in all that we do: from the initial call to job completion, our customers are met with a knowledgeable, caring, and professional staff prepared to offer a five-star experience that is unmatched in the home repair industry.

"It was excellent. Did good job. Quick, thorough. Met everything to my satisfaction."

Richard B on December 2019

For more than 60 years, ’58 Foundations & Waterproofing has provided the highest-quality basement waterproofing, crawlspace encapsulation, radon mitigation, mold removal and foundation repair solutions for homes and commercial properties. We lead with a promise of Trusted Five-Star Service, which means the customer experience is at the center of everything we do. Since 1958, we have been steadfast in keeping this promise and in upholding the values on which '58 Foundations was built: trust, teamwork, integrity, respect and communication. This comes across in all that we do: from the initial call to job completion, our customers are met with a knowledgeable, caring, and professional staff prepared to offer a five-star experience that is unmatched in the home repair industry.

"It was excellent. Did good job. Quick, thorough. Met everything to my satisfaction."

Richard B on December 2019


Avatar for Real Estate Inspections

Real Estate Inspections

675 Featherbed Lane
4.92(
49
)

Real Estate Inspections

675 Featherbed Lane
4.92(
49
)
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

We offer a complete line of residential and commercial property inspection and testing services. All of our services are performed in house by trained, licensed, and certified inspectors. Our mission is to impart knowledge to our clients. We endeavor to empower our clients with the knowledge they need to make informed Financial, Health & Safety decisions for their family.

"Excellent! See statement"

Peter S on August 2022

We offer a complete line of residential and commercial property inspection and testing services. All of our services are performed in house by trained, licensed, and certified inspectors. Our mission is to impart knowledge to our clients. We endeavor to empower our clients with the knowledge they need to make informed Financial, Health & Safety decisions for their family.

"Excellent! See statement"

Peter S on August 2022


Avatar for Healthy Home Solutions

Healthy Home Solutions

165 Charlies Ct
4.95(
120
)

Healthy Home Solutions

165 Charlies Ct
4.95(
120
)
Customers say: True professional
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers

Healthy Home Solutions is an indoor air care and restoration company. Our core services are mold testing and remediation, odor removal, duct cleaning and water mitigation. Since 2011 we have been creating healthy indoor environments where people live, work and play. We believe in technology and building science, and we utilize all the tools in our wheelhouse to constantly improve our skills and service. We understand your home and family is your top priority, which makes it ours, too.

"They quality of work was very good and they keep my family safe."

Theresa M on September 2022

Healthy Home Solutions is an indoor air care and restoration company. Our core services are mold testing and remediation, odor removal, duct cleaning and water mitigation. Since 2011 we have been creating healthy indoor environments where people live, work and play. We believe in technology and building science, and we utilize all the tools in our wheelhouse to constantly improve our skills and service. We understand your home and family is your top priority, which makes it ours, too.

"They quality of work was very good and they keep my family safe."

Theresa M on September 2022


Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

60 Elm Hill Ave.
4.85(
347
)

Environmental Testing & Research Laboratories, Inc

60 Elm Hill Ave.
4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

Radon Detection and Reduction questions, answered by experts

Yes, radon testing is absolutely necessary if you suspect the presence of this hazardous gas, and the Environmental Protection Agency (EPA) recommends testing for all homes in the country. Radon is a pervasive natural gas that can leak through your home’s foundation and seep into the living areas. Unfortunately, the gas is highly carcinogenic and is the second leading cause of lung cancer. Radon testing is crucial for keeping you and your family safe from harm, so hire a radon mitigation specialist to test your home if you suspect its presence in your home.

Through air sampling devices and surface swabs in key areas of concern.

A DIY kit can lessen the sting that comes with paying for a professional assessment, but these comprehensive tests are true lifesavers. Inspectors are more likely to catch all of the pollutants and hazards in your air. Plus, you’ll still need a professional to verify and act on your DIY test results. 

Some kits don’t include tests for certain air pollutants or only detect their presence, but not their levels (i.e., mold spores). If you’re willing to shell out money for a DIY kit, it’s usually better to stretch your budget slightly higher for a more detailed assessment.

Radon testing costs around $450 on average, but you could pay between $150 and $800 for testing, depending on a few factors. The size of your house is one of the most significant cost factors, as your radon professional will have to set up additional tests for homes with larger footprints. The type of test can also have an impact on the cost. Finally, some radon testing companies will include a recommended protocol for radon mitigation, while others might charge $50 to $100 extra.

Sampling typically takes 1-3 hours, and depending on the provider, lab results are available within 2-7 days.

The Frederica, DE homeowners’ guide to radon detection and reduction services

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