Harris County single-family residential property values continue to rise despite slowing sales, according to the Harris Central Appraisal District.

“We are again seeing a large number of residential and commercial properties in Harris County increasing in value this year,” Chief Appraiser Roland Altinger said in a press release.

Altinger said both residential and commercial properties are still in high demand with residential values increasing by about 16% on average and commercial values going up just over 21% on average.

Residential property data:

• 10.9% decrease in single-family home sales year over year
• 2.7-month supply of homes, increase from 1.3-month supply year over year
• 15.8%-21.2% increase in values for homes in all price ranges

Some neighborhoods seeing major increases in property values include the Houston Heights, Montrose, Upper Kirby, Greenway, and the West University and Rice University areas, according to the release.

Commercial property data:

• 76% of commercial properties see increase in value
• 27% increase in apartment values
• 23% increase in warehouse values
• 20% increase in retail values
• 13% increase in office values
• 17% increase in vacant land prices

Altinger said the HCAD attempts to assess values as close to 100% accuracy as possible through “mass appraisal techniques” to appraise all 1.8 million parcels in the county on deadline.

“If the property owner does not think that value is correct, they should file an appeal and provide information in their protest meeting that could change the value,” he said.

Property owners may protest their values immediately upon receiving their value notice packets from the district, which include a protest form. The HCAD also offers an online program to file protests at www.hcad.org/ifile.