Sandi Gromoshak, REALTOR®

Portrait photo of Sandi Gromoshak

Londonderry, NH

1 Verani Way
Londonderry, NH 03053

Office: 603-434-2377

Licensed In


About Sandi

Realtor and Certified Residential Appraiser

I came to New Hampshire from Connecticut in the late '80s to attend college in Nashua. Since then I have called New Hampshire home. An early interest in interior design and home staging expanded to a love of real estate specifically in the field of real estate appraisal. I began my appraisal career in 2000 then opened my firm, Appraisal Source, LLC, in 2005. Ever since, I have been valuing New Hampshire homes for purchases, refinances, divorce, tax abatement, and more. Widening my real estate expertise to include selling property was a logical next step. Utilizing my valuation and market analysis experience, I can assist sellers with the establishment of their listing price just as I can assist with buyer negotiations. 

My tag line "Valuing New Hampshire Homes" means more to me than the determination of a home's market value.  It also means I understand the importance of home ownership and what that means to the fulfillment of your dreams and your future. 

I am proud to have been described by clients and colleagues as a detail-oriented, honest, trustworthy, compassionate, and hard-working professional. I am a former Home Health and Hospice volunteer and presently participate in VeraniCARES meaning, with each transaction I complete, a donation is given to local charities in need.

In our off time, Daniel and I spend time in the White Mountains camping and hiking. We are never without our rescue dog, Dakota, who is far better at scaring off the bears than we are!  Fishing is another passion of mine.  Should you see my vanity plate REELTAH in and around town, give a toot!

Passionate about NH's Lakes Region and Dartmouth-Lake Sunapee Region, I am always excited to sell and appraise those areas. Waterfront properties are a niche of mine as I have fished many of our State's lakes and have developed an understanding of what brings value to a waterfront property such as water clarity, ease of entry, depth, whether motorized vessels are allowed, etc.  Whether you are planning to live on a smaller waterbody such as Rust Pond in Wolfeboro or if renowned Lake Winnipesaukee or Lake Sunapee will become your forever destination, my experience in those regions is vast.

If you believe my 20+ years of appraisal experience will benefit your next real estate transaction, I encourage you to call or text 603.540.1028 or email I look forward to being of assistance.


10/10 would recomend Sandi as a realtor. She helped me find the perfect property in a very hard market. She was always available to attend open houses and answer any questions I had. I always felt like she gave me a fair assessment of a property and I never felt like she was pushing me to make a sale. I would recommend her to all my friends and family.

- Christina M

Sandi is hands down THE BEST real-estate agent! She is extremely knowledgeable, takes the time to truly explain anything and everything along the process and makes you feel super comfortable. The contact and conversations were like talking to your best friend. Sandi is invested and works for you! LOVE, LOVE, LOVE!

- Beth B

Sandi is the best you could ever ask for. At all times she went above and beyond what we could have expected from a real estate agent. She returned every phone call the same day and answered any questions that we had, no matter how small or trivial our concerns were, Sandi was there for us. My wife and I owe our beautiful home to the help that Sandi provided, we truly could not have done it without her.

- Jason E

Sandi was friendly.

- Sheryl F

She is outstanding as an agent and as a person. Very happy with her. She did much more than she had to.

- Joseph E

Sandi, thank you for everything you did to make the selling of our Meredith home so easy. We were so lucky to have someone who knew the market, positioned the house appropriately and got it sold at the price point and timeframe we were looking for. You are truly a professional in every aspect of the job and you knew how difficult it was for us to sell (with all the memories we had) and never pressured us in any way. We are grateful for the incredible job you did.

- S & K D.

After seeing all the work Sandi had to do to sell & buy a home, I was extrmely impressed & very happy with the results. Thank you Sandi.

- Daniel M

Sandi cares about the end result being accurate. She is thorough and always gets the job done.


...a good listener; detail-oriented; thorough note taker; excellent organizational and writing skills; strong ethics and moral code...


Sandi has an in-depth understanding of real estate from several aspects of the industry, years of experience, an ability to detect emerging trends and market nuances. She is both creative and analytical in her approach. She is results-oriented while still being lots of fun to work with.