Your
Your
Your
Home
Home
Home
Deserves
Deserves
Deserves
an
an
an
Honest
Honest
Honest
Number
Number
Number
Precise valuations, grounded in expertise and integrity.
Precise valuations, grounded in expertise and integrity.
Horstman De Groot
Horstman De Groot
Horstman De Groot
We are a property valuation firm based in Utrecht, built on one simple belief: every home and every client — deserves careful attention.
We are a property valuation firm based in Utrecht, built on one simple belief: every home and every client — deserves careful attention.
We are a property valuation firm based in Utrecht, built on one simple belief: every home and every client — deserves careful attention.
Founded by Willem Horstman and Thierry de Groot, the firm combines deep local knowledge with a focused specialization in independent valuations, delivering clear, highly detailed reports that stand up to scrutiny in a heavily regulated market.
In an industry where speed can sometimes replace care, Horstman De Groot takes a deliberate approach—showing up with time, precision, and calm guidance. From the first conversation to the final report and follow-up questions, they aim to be the steady partner people can rely on: objective in their work, personal in their service, and trusted in the region they call home.
Founded by Willem Horstman and Thierry de Groot, the firm combines deep local knowledge with a focused specialization in independent valuations, delivering clear, highly detailed reports that stand up to scrutiny in a heavily regulated market.
In an industry where speed can sometimes replace care, Horstman De Groot takes a deliberate approach—showing up with time, precision, and calm guidance. From the first conversation to the final report and follow-up questions, they aim to be the steady partner people can rely on: objective in their work, personal in their service, and trusted in the region they call home.
15+
15+
15+
years experience
years experience
years experience
NVM
NVM
NVM
member
member
member
500+
500+
500+
properties valuated
properties valuated
properties valuated
Specialist valuations for every type of property
Specialist valuations for every type of property
Specialist valuations for every type of property
A focus on service and the essentials of the valuation practice guarantee the quality of every report
A focus on service and the essentials of the valuation practice guarantee the quality of every report
A focus on service and the essentials of the valuation practice guarantee the quality of every report
01
Expertise
Horstman De Groot provides accurate and reliable valuations for houses and apartments. While they maintain strict standards regarding our independence, they always make room to listen to the wishes and needs of our clients. Within the applicable professional frameworks, they focus on providing tailored solutions.
01
Expertise
Horstman De Groot provides accurate and reliable valuations for houses and apartments. While they maintain strict standards regarding our independence, they always make room to listen to the wishes and needs of our clients. Within the applicable professional frameworks, they focus on providing tailored solutions.
01
Expertise
Horstman De Groot provides accurate and reliable valuations for houses and apartments. While they maintain strict standards regarding our independence, they always make room to listen to the wishes and needs of our clients. Within the applicable professional frameworks, they focus on providing tailored solutions.
02
Flexible Service
Flexibility in both our service and communication is worth striving for. That is why they emphasize personal contact and strive to complete a valuation report within five working days.
02
Flexible Service
Flexibility in both our service and communication is worth striving for. That is why they emphasize personal contact and strive to complete a valuation report within five working days.
02
Flexible Service
Flexibility in both our service and communication is worth striving for. That is why they emphasize personal contact and strive to complete a valuation report within five working days.
03
Local Focus
As born and raised residents of Utrecht, Willem en Thierry have a strong connection to the city and its surroundings. This translates into in-depth local knowledge, with expertise in market values and developments within both the city and the wider province. They are also very familiar with the surrounding towns and villages throughout the Utrecht region and are always happy to work there, these include Maartensdijk, Bilthoven, De Bilt, Zeist, Odijk, Driebergen, Houten, Vianen, Nieuwegein, IJsselstein, Harmelen, Maarssen, and anything in between.
03
Local Focus
As born and raised residents of Utrecht, Willem en Thierry have a strong connection to the city and its surroundings. This translates into in-depth local knowledge, with expertise in market values and developments within both the city and the wider province. They are also very familiar with the surrounding towns and villages throughout the Utrecht region and are always happy to work there, these include Maartensdijk, Bilthoven, De Bilt, Zeist, Odijk, Driebergen, Houten, Vianen, Nieuwegein, IJsselstein, Harmelen, Maarssen, and anything in between.
03
Local Focus
As born and raised residents of Utrecht, Willem en Thierry have a strong connection to the city and its surroundings. This translates into in-depth local knowledge, with expertise in market values and developments within both the city and the wider province. They are also very familiar with the surrounding towns and villages throughout the Utrecht region and are always happy to work there, these include Maartensdijk, Bilthoven, De Bilt, Zeist, Odijk, Driebergen, Houten, Vianen, Nieuwegein, IJsselstein, Harmelen, Maarssen, and anything in between.
04
NWWI Validated
Horstman De Groot reports comply with all requirements of the Dutch Home Value Institute (NWWI), to guarantee the quality of every report and which is typically recognised by all major lenders.
04
NWWI Validated
Horstman De Groot reports comply with all requirements of the Dutch Home Value Institute (NWWI), to guarantee the quality of every report and which is typically recognised by all major lenders.
04
NWWI Validated
Horstman De Groot reports comply with all requirements of the Dutch Home Value Institute (NWWI), to guarantee the quality of every report and which is typically recognised by all major lenders.
Featured Clients
Featured Clients
Featured Clients
Trusted by clients who value transparent and precise valuations — explore some of the individuals we’ve had the pleasure to work with.
Trusted by clients who value transparent and precise valuations — explore some of the individuals we’ve had the pleasure to work with.
Trusted by clients who value transparent and precise valuations — explore some of the individuals we’ve had the pleasure to work with.
Really satisfied! Fast and professional service.
Client from Nieuwegein
A very positive experience. Everything was explained clearly and thoroughly.
Client from Maartensdijk
Pleasant personal attention. It was very nice that the valuation could be scheduled on short notice and that I was helped so quickly.
Client from Buiten Wittevrouwen, Utrecht
Quick response, neat delivery
Client from Zeist
Expert assessment.