Guarantee Mortgage - San Francisco, 505 Montgomery

We have helped Bay Area families finance their home purchase, with over $2 billion in loans annually, and we can help you.

Offering a wide range of products and services, Guarantee Mortgage is well prepared to meet every real estate lending need.

We have 22 years under our belt providing world-class client service. Our top priority is to make sure you are presented with all available loan options, so that you can make an informed decision, that’s right for your financial situation.

http://www.guaranteemortgage.com

Guarantee Mortgage NMLS #1850 and CAL-BRE License #01215943

Share

Recommendations (1363)

Mar 3, 2021

Matthew Yurich recommends Orlando Diaz

It was great having Orlando work with us on our loan. He was very professional and is excellent at what he does. Would highly recommend!
Mar 2, 2021

Jason S. recommends Kevin Casey

Navigated Covid issues like we knew what we were doing...so stoked to have our home REFI'd. Thanks.
Mar 2, 2021

Gloria V. recommends Kevin Casey

Kevin was a true professional. His expertise was very visible during the entire process. Thank you for helping me refinance my loan.
Feb 24, 2021

Vivian Altmann recommends Kathy Derangi

homeowner

Kathy facilitated the process of refinancing my home super smoothly and efficiently. She replied to my every call or email within an hour - often in minutes. She's helpful, well-informed, and as pleasant as can be. Everything was so easy, especially during this current quarantine. She gets a hearty recommendation from me!
Feb 24, 2021

Bennett Y. recommends James W. Argo

Jim was attentive, thorough, and kept us informed at all phases of the process. The process went very smoothly and our loan was approved and funded promptly.
Feb 19, 2021

Laura Bahbout recommends Mireille Costandi

Controller

As usual Mireille did a terrific job. We have used her services for a few loans and we are extremely pleased. She is precise, meticulous and conscientious. I always refer her to friends and relatives who are in need of a Loan Consultant.
Feb 19, 2021

Nicole Bahbout recommends Mireille Costandi

Mireille is amazing and easy to work with. She is quick, professional, and very detail oriented. I highly recommand anyone work with her!
Feb 18, 2021

Ziba Mahdavi recommends Orlando Diaz

Managing director, Kavli institute for particle astrophyiscs and cosmology, Stanford University

A friend recommended I contact Orlando. It was a pleasure working with him. He is prompt, patient and professional.
Feb 18, 2021

isabelle duhalde recommends Mireille Costandi

so easy - highly recommend
Feb 17, 2021

Scott Huang recommends Pov Oum

POV was professional and efficient. She made my refinancing process a breeze.
Feb 17, 2021

anonymous recommends Aisling Ferguson

Professional, succinct and easy to work with. We have worked on project together for over twenty years. I keep returning.
Feb 17, 2021

Chris Jennings recommends Kathy Derangi

Kathy is always a pleasure to work with. She has assisted with multiple refinance and mortgage loans. The process was streamlined and she explained each step clearly. She was always available to answer any questions.
Feb 17, 2021

Suzanne B. recommends Mireille Costandi

Mireille Costandi was wonderful to work with on our refi. Mireille is knowledgeable and practical, and provided clear explanations and updates throughout the process. Mireille made our refi a painless process. Thank you, Mireille!
Feb 16, 2021

Cathryn L Friis recommends Robin Patronik

I have completed two refinances of my present home. Everything went very well. Robin is very professional and very organized. Robin responds quickly with any questions a person might have. I enjoyed working with Robin and would highly recommend her.
Feb 15, 2021

Hemal Shah recommends Robin Patronik

I have been working with Robin for years and done several refinances with her for my properties. I appreciate her thoroughness and constant updates. The process was seamless as always! Thank you Robin.
Feb 12, 2021

James Thompson recommends Ken Dean

Beyond professional. We felt that he had our best interest in mind and really put forth an effort to help the home buying/selling process a breeze. Alway reachable by way of phone or text. Could not recommend Ken enough to everyone!
Feb 11, 2021

Peter B. recommends Larry Horowitz

Larry is simply the best, I have worked with Larry through a couple of refinancing loans and every time I am amazed by his first rate service and depth of knowledge. If you choose Larry, you are in good hands.
Feb 10, 2021

Gary W. recommends Larry Horowitz

Larry is the best. He made a tedious and frustrating process almost enjoyable. Larry was always on top of things and very communicative throughout. We would highly recommend Larry to anyone seeking a mortgage. My wife and I are very grateful.
Feb 10, 2021

Ewa Bauer-Furbush recommends Aisling Ferguson

Aisling is THE BEST. Our refinancing sailed smoothly through all steps under her command. It was pleasure working with her. She is a superb professional loan consultant.
Feb 9, 2021

Tom Mayhew recommends James W. Argo

I was just starting a fairly routine refinance with Jim when my 79 year old mother finally decided she was ready to downsize. She wasn't sure whether to buy a smaller place or move into a retirement community. I asked Jim to talk to her and help her with loan options, and he was patient, kind, and clear in explaining them, ranging from when to sell her house vs. buying the new one, options for bridge financing, how sellers view contingencies, how preapprovals work, and so on. He saw her all the way through . . . and then she decided she would rather move into an apartment, and rent instead of buy. Jim was totally fine with having spent the time even though there was no transaction in the end - he is first and only about service to clients. In doing so, he has earned a loyal client and referral source in me.
Feb 8, 2021

Cheryl Minvielle recommends James W. Argo

James Argo came to our rescue after we spent several months trying to refinance our home mortgage with our current company. The Nationstar folks were running us in circles and did not offer us the best rate or terms. They had terrible customer service which was no customer service . James was patient, knowledgeable, professional and efficient. I would not hesitate to recommend him to my friends and family. Thank you, James.
Feb 4, 2021

Nikki Bonifacio recommends Ken Dean

Ken is amazing to work with he is very responsive and helped put any concerns my husband or I had about the loan process to rest. I will gladly recommend him to anyone and everyone I know!
Feb 4, 2021

Jonathan Bonifacio recommends Ken Dean

Ken is the guy to go to. He goes out of his way without hesitation and gets all the results you want. No waiting around with him. Always quick to respond and quick to get you anything needed. I highly, highly recommend Ken to anyone!
Feb 1, 2021

Kiara D. recommends Larry Horowitz

Larry was knowledgeable, patient, answered all my questions and walked me through the refi process until closing.
Jan 29, 2021

Taylor B recommends Pov Oum

Pov was very helpful throughout the entire process and I highly recommend!

Our Team

  • Aisling Ferguson

    NMLS #280915 Loan Consultant - San Francisco
    NMLS #280915 / 1850 - CA BRE #01225420 / 01215943

  • Orlando Diaz

    Sr. Loan Consultant - San Francisco - Montgomery St.
    NMLS #238849 / 1850 - CA BRE #01475255 / 01215943

  • Kathy Derangi

    Loan Consultant - San Francisco - Montgomery St.
    NMLS #1151839 / 1850

  • Foster Weeks

    Loan Originator - San Francisco - Montgomery St.
    NMLS #253370 / 1850 - CA BRE #01383598 / 01215943

  • James W. Argo

    Senior Loan Officer - San Francisco - Montgomery St.
    NMLS #257031 / 1850 - CA DRE #00869591 / 01215943

  • Larry Horowitz

    Loan Consultant - San Francisco - Montgomery St.
    NMLS #239001 / 1850 - CA BRE #01003870 / 01215943

  • Ken Dean

    Loan Consultant - San Francisco - Montgomery St.
    NMLS #237940 / 1850 - CA BRE #0902556 / 01215943

  • Natasha Lovas

    Senior Mortgage Advisor - San Francisco - Montgomery St.
    NMLS #239455 / 1850 - CA BRE #01161948 / 01215943

  • Robin Patronik

    Senior Loan Officer - San Francisco - Montgomery St.
    NMLS #241087 / 1850 - CA BRE #01347330 / 01215943

  • Pov Oum

    Loan Officer-San Francisco-Montgomery St.
    NMLS # 1226687 / 1850 - APMC CA BRE #01215943

  • Kevin Casey

    Loan Consultant - San Francisco - Montgomery St.
    NMLS #238192 / 1850 - CA BRE #01178612 / 01215943

  • Joel Marks

    Loan Advisor (NMLS: #216888/1850)

  • Allan McAllister

    Loan Consultant - San Francisco - Montgomery St.
    NMLS #280540 / 1850 - CA BRE #01372084 / 01215943

  • Cecelia Tyeskey

    Reverse Mortgage Specialist - San Francisco - Montgomery St
    NMLS #239861 / 1850 - CA BRE #01212004 / 01215943

  • Mireille Costandi

    Loan Consultant - San Francisco - Montgomery St.
    NMLS #249322 / 1850 - CA BRE #01132350 / 01215943

  • Ming Leong

    Loan Consultant - San Francisco - Montgomery St.
    NMLS # 252471 / 1850 - CA BRE #01369831 / 01215943

  • KC Murphy

    Sr. Loan Consultant - San Francisco - Montgomery St.
    NMLS #255492 / 1850 - CA BRE #1007053 / 01215943

  • Fe David

    Loan Consultant - San Francisco - Montgomery St.
    NMLS # 482592 / 1850 - APMC CA BRE #01215943

  • Risa J. Meyer

    Mortgage Specialist - San Francisco - Montgomery St.
    NMLS #332214 / 1850 - CA BRE #01126851 / 01215943

  • Sheila Wood

    Manager/Loan Consultant - San Francisco - Montgomery St.
    NMLS #253742 / 1850 - CA BRE #00824166 / 01215943

  • Bob Siefert

    Senior Vice President - San Francisco - Montgomery St.
    NMLS #55105 / 1850 - CA BRE #00921214 / 01215943

  • Amy Lai

    Loan Consultant - San Francisco - Montgomery St.
    NMLS #341535 / 1850 - CA BRE #01795977 / 01215943

  • Mark Wiener

    Loan Officer - San Francisco - Montgomery St.
    NMLS # 246293 / 1850 - APMC CA BRE #01215943