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Verified Reviews for Property Appraisal pros in Islip, NY

*The Angi rating for Property Appraisal companies in Islip, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Property Appraisal needs.

*The HomeAdvisor rating for Property Appraisal companies in Islip, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Property Appraisal needs.

Last update on July 13, 2026

Find Property appraisers in Islip

Avatar for Mary Soper Appraisals
Mary Soper Appraisals
5.0(
32
)
Appraisal - Real Estate

Serving Islip, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1996

Free estimates

Small jobs welcome

"I spoke with Mary Soper on Thursday, she met me at the property on Monday, and I had an appraisal in hand on Wednesday! Itâ s wonderful when people deliver on product quality and time! I recommend her most highly!"
Long Island
Response time4 hrs
Response rate99%
16 neighbors recently requested a quote
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Avatar for Dennis Aarons & Associates, Inc.
Dennis Aarons & Associates, Inc.
4.9(
36
)
Appraisal - Real Estate

Serving Islip, NY and surrounding areas

Approved

In business since 1979

Free estimates

Emergency services offered

"I recently worked with Dan on a real estate appraisal. After speaking with a few appraisers, I chose Dan because he took the time to thoroughly explain the process, including IRS-qualified appraisal criteria, which made me feel the most comfortable. I was very impressed with his professionalism and expertise. He was punctual, thorough, and delivered a comprehensive report quickly. I highly recommend Dan and would work with him again in the future."
Response time8 hrs
Response rate96%
4 neighbors recently requested a quote
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Avatar for A.D.A. Resources, LLC
A.D.A. Resources, LLC
4.6(
11
)
Appraisal - Real Estate

Serving Islip, NY and surrounding areas

Approved

In business since 1998

Customers say: True professional

"Antonio was processional , great at what he does, and was accommodating on a very quick turnout. In fact he came out to do the appraisal on a Holiday. I would highly reccomend and use him for any other real-estate appraisal"
Response time3 hrs
Response rate93%
31 neighbors recently requested a quote
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Avatar for EBJ Associates, LLC
EBJ Associates, LLC
4.4(
34
)
Appraisal - Real Estate

Serving Islip, NY and surrounding areas

Approved

In business since 2004

Customers say: Terrific value

"They did exactly what i hired them to do which was an appraisal of my property. They were on time and the turnaround time was great. They did a good job at a good price. Nothing not to like about them."
Response time6 hrs
Response rate90%
5 neighbors recently requested a quote
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Property Appraiser questions, answered by experts

Appraisals can come in above or below the list price or offer price for a property, and where it falls depends on many factors. Those include the condition of the property, the location, and the age of the home, but often, the condition of the market is the biggest determining factor. Where demand is high for properties, buyers compete with each other for homes, which tends to drive up offer prices above where appraisals come in. Where demand is low, you’ll often see the opposite happening.

While a finished basement adds value to your home, it is assigned a different value than space on the main floors. An appraiser will assess the square footage of a finished basement at about 50% to 60% of the value of the square footage for the rest of your home. Appraisal value for a finished basement depends on your location’s real estate market and the specifics of the basement and how it was finished. 

Mobile homes weigh anywhere between 45 to 50 pounds per square foot. Some newer options weigh up to 70 pounds per square foot. An average single-wide mobile home weighs 45,000 pounds, and a double-wide mobile home weighs about 70,000 pounds. Triple-wide mobile homes range from 90,000 to 100,000 pounds.

Yes, experienced appraisers handle a variety of property types with tailored methods.

While there’s technically no limit to the dollar amount you can borrow for a home addition, the standard limit is around 80% of the value the addition is expected to add to your home. That means you could feasibly borrow up to $80,000 if an appraiser determines that the addition or bump out will add $100,000 in value to your property. You might also be limited by your debt-to-income ratio or credit score.

The Islip, NY homeowners’ guide to property appraisals

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

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