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

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Recommendations (1047)

3 days ago

Randall recommends Larry Horowitz

As always Larry kept us updated on what was needed and the next steps along the loan journey. Appreciated all the white glove service he provides. Our 3rd deal with him and every single deal went smoothly.
Oct 10, 2019

Betty Martin recommends Kathy Derangi

Insurance

Kathy helped us refinance two properties. Everything went smoothly and quickly. Great communication throughout process. Highly recommend.
Oct 8, 2019

Mike Soper recommends Orlando Diaz

Regional Executive

We have been working with Orlando the past 15 years with multiple transactions and he is such a professional that is easy to work with.
Responsive, service and great advice makes it so easy to do business with Orlando.
Highly recommend!!
Oct 8, 2019

Mike Soper recommends Orlando Diaz

Regional Executive

We have been working with Orlando the past 15 years with multiple transactions and he is such a professional that is easy to work with.
Responsive, service and great advice makes it so easy to do business with Orlando.
Highly recommend!!
Oct 7, 2019

Kevin Burr recommends Larry Horowitz

Retired

Having worked with Larry for more than a decade, I can recommend him without hesitation. He is the consummate professional, always focused on his clients and what’s in their best interest. If you’re looking for a top flight mortgage broker, Larry is one of the best in the business.
Oct 3, 2019

A Berry recommends Kathy Derangi

Angela Berry

Kathy pays attention to detail
Her tenacity is fantastic.
Sep 25, 2019

Suzanne recommends Joel Marks

Joel was fabulous. I would recommend him to everyone I know. He was available whenever I had any questions and made everything run smoothly. There was no stress.
Sep 19, 2019

David D. Barton recommends James W. Argo

Sr. Mortgage Broker Retired

I was a successful mortgage broker for approximately 25 years. Mr. Argo is the most professional loan officer I have ever met. His knowledge and caring for his clients is beyond anyone I have met in our industry.
Sep 15, 2019

Thomas Neill recommends Ken Dean

I highly recommend Ken Dean. He made my refinance move smoothly through the process. He was easy to get a hold of and took time to explain the process and answer my question.
Sep 10, 2019

Cristin H. recommends Aisling Ferguson

Aisling was amazing. I have been in the process of purchasing a home in SF (while being in Europe) and Aisling was a phenomenal support in the process. She has a sense of urgency, is clear in her asks and does whatever it takes to get the job done in a way that makes her clients feel good. Simply put, she was my advocate and I look forward to working with her again in the future.
Sep 9, 2019

Anonymous recommends Kathy Derangi

Kathy was great to work with and we highly recommend Kathy.
Sep 5, 2019

Elliot Morrison recommends Orlando Diaz

Financing has never been as easy and pain free as the 2 refis we did with Orlando. Highly recommended!
Aug 25, 2019

Troy Onorato recommends Ken Dean

Founder Hat Trick Racing

Ken was professional and went the extra mile to explain the process and get us the best loan possible.
Aug 23, 2019

Rose Cage recommends Kevin Casey

Multi Use Building owner

Kevin is seriously, the best.

I would recommend him highly, and will definitely use him on my next transaction.
Aug 12, 2019

Tom Sweeney recommends Kathy Derangi

Home Owner

I asked Kathy about a home equity line of credit and she recommended a home refi at a lower rate.
I have purchased and refinanced several homes over the decades and Kathy was great.
She communicated with me on a regular basis, some times two or three times a day.
She was professional, knowledgeable and friendly through the whole process.
I will use her again and highly recommend her.
Aug 9, 2019

Jeff Wong recommends Kathy Derangi

Environmental Health and Safety

I couldn't be happier and more thankful for the support and services Kathy provided to our family towards the purchase of our new home. Initially, she was very responsive and provided a clear table for what our purchase options were at various levels; this was immensly helpful for my wife and I in forecasting projected expenses. Once we got the ball rolling, Kathy was on top of it and was diligent in following up on critical items and providing reminders along the way which kept us on track. It was clear throughout the process that she had our best interests in mind. We will certainly be using Kathy again in the future and recommend her to anyone who is out there looking for a new house. Thanks for everything Kathy!
Aug 8, 2019

Sarah Lacy recommends Aisling Ferguson

CEO

Aisling has helped me out of nearly impossible mortgage situations twice. Her patience, attention to detail and resourcefulness are unparalleled. Everyone who has been part of these transactions has absolutely raves about her. I’ll never work with anyone else. It’s strange when you have more loyalty to a mortgage broker than, say, your hairdresser but that’s absolutely the case for me with Aisling!
Aug 7, 2019

Racelle LaMar recommends James W. Argo

Doctor of Veterinary Medicine

Wow. Jim and his team really went the extra mile for me. My loan was a bit 'out of the ordinary' and had quite a few moving parts.
Their ability to get the deal done was amazing, their communication outstanding, and I was quite pleased to work with them.
I recommend James W. Argo for your mortgage needs.
Aug 7, 2019

Yvette Fawzi recommends Mireille Costandi

We have done several loans/ refi with Mireille. She is thorough and meticulous and everything always goes smoothly. She works hard to do the very best for you. You are in good hands.
Aug 7, 2019

Julie Keshmiry recommends James W. Argo

Chief of Staff

A loan process can be unclear and painful but James expertly helped us navigate this. He was incredibly responsive, always on top of the meticulous steps. He also guided us with sound advice along the way. I would highly recommend him.
Aug 7, 2019

Anonymous recommends Kathy Derangi

Kathy was super organized, wonderful at breaking everything down for us and communicating, and overall easy to work with. Highly recommend her!
Jul 31, 2019

Paul Carr recommends Aisling Ferguson

To say Aisling did an amazing job is a huge understatement. When we called her we had just been let down by our previous broker right in the middle of trying to buy our dream house. Not only was Aisling able to get us the loan we needed, at a great rate, but she also dealt quickly and professionally with escrow, insurance and all the other parts of a complicated transaction. If you're buying a house in the Bay Area or any other part of California (we were in SF, but buying in Southern California) Aisling should be your first and only call. She will fight for you.
Jul 23, 2019

Don L. recommends James W. Argo

Attorney

Jim did a great job advising us and managing our situation which required some extra steps due to the July 4th holiday. Can't provide enough high praise about the level of professionalism and service one can expect from Jim.
Jul 22, 2019

Diana recommends Fe David

Fe was great to work with. She made herself available any time of day to answer any questions. She kept me up to date throughout the entire process which was greatly appreciated.
Jul 22, 2019

Heidi recommends Joel Marks

Great mortgage broker! I highly recommend Joel for any mortgage needs!

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

  • Foster Weeks

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

  • Kathy Derangi

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

  • James W. Argo

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

  • Natasha Lovas

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

  • Larry Horowitz

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

  • Robin Patronik

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

  • Ken Dean

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

  • Allan McAllister

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

  • Kevin Casey

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

  • Cecelia Tyeskey

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

  • Pov Oum

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

  • Risa J. Meyer

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

  • Ming Leong

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

  • Joel Marks

    Loan Advisor (NMLS: #216888/1850)

  • Mireille Costandi

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

  • Fe David

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

  • Paul Rea

    Loan Consultant - San Francisco - Montgomery St.
    NMLS #280163 / 1850 - CA BRE #00856755 / 01215943

  • KC Murphy

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

  • Sally Adam

    Loan Consultant - San Francisco - Montgomery St.
    NMLS #245703 / 1850 - CA BRE #01244582 / 01215943

  • Sheila Wood

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

  • Mark Wiener

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

  • Tra Thach

    Loan Consultant