Portfolio Assistant

Kidder Mathews; Irvine (CA); On-site; USD 45,000 - 65,000; Full time

Job summary

Kidder Mathews in Irvine, CA, is seeking a Portfolio Assistant to support the Manager(s) in day-to-day operations for the assigned portfolio, ensuring leasing and financial processes run smoothly.

You will maintain building floor plans and vacancy logs, coordinate leases and notices, prepare monthly owner statements, code invoices, assist with CAM reconciliations, and help respond to tenant concerns while building strong relationships with owners and vendors.

Qualifications

• Good communication and organizational skills.
• Professional ability to build relationships with clients, vendors and internal partners.
• Professional communication etiquette with good oral and written communication skills.
• Demonstrated ability to prioritize, multi-task and utilize resources to execute tasks within a deadline-oriented environment.
• Ability to speak, write and understand English.
• Exceptional attention to detail.
• Strong customer service skills with the ability to interface with prospective tenants, owners, employees, and management.
• Demonstrated initiative and trouble shooting skills.
• Demonstrated ability to recognize high quality maintenance work.
• Demonstrated ability to draft quality, well written emails, reports and letters.

Responsibilities

• Leasing: Partner with Manager(s) and leasing team members to ensure that all vacant space is in “market ready” condition.
• Maintain building floor plans, vacant space log, and stack plans.
• Coordinate approval of and track process of leases, contracts, notices, and other time sensitive documents.
• Distribute lease documents to Owner, Administrative Assistant, and Tenant.
• Coordinate signage, keys, and distribution of property information sheet to Tenant.
• Receive, code, and track all invoicing related to lease commissions.
• As directed by Manager(s), assist Administrative Assistant in creating and maintaining lease and property files.
• Financial and Reporting: Code invoices/payables in a timely manner each week.
• Research problems with invoices, including resolving past due balances.
• Create Account Action Request forms for Manager’s signature.
• Assist Manager(s) with annual budgeting process, to include re-bid of service contracts as directed by Manager(s).
• Assist Property Manager(s) in preparation of monthly Owner statements - assembles, copies, and distributes financial reports
• Review annual CAM reconciliations as assigned by Manager(s) and report findings to Manager(s)
• Prepare new vendor set up form for approval by Manager
• Request appropriate insurance information from new vendors ensuring all required information is received
• As directed by Manager(s), assist in the collection of delinquencies by contacting tenants and preparing demand notices and pay or vacate notices
• Assist with the budget preparation process, to include contacting utility companies, vendors, and contractors to obtain upcoming rate increases; compiling data for Manager(s) and property accountant for final budget input

Skills

Communication

Organization

Relationship building

Written communication

Multitasking

English proficiency

Attention to detail

Customer service

Initiative

Troubleshooting

Email drafting

Report writing

Education

High School Degree

Job description

Posted Friday, August 14, 2026 at 10:00 AM

Kidder Mathews has been a leader in the commercial real estate industry for nearly 60 years, fostering an innovative and dynamic work culture with more than 100 "best workplace" awards. Now the largest fully independent commercial real estate firm in the Western U.S., Kidder Mathews has over 900 professionals across 19 offices in Washington, Oregon, California, Nevada, and Arizona. We offer a complete range of brokerage, appraisal, asset services, consulting, and debt & equity finance services for all property types. The firm averages $9 billion in transaction volume, manages more than 54 million square feet of space, and conducts 2,700 appraisal, consulting, and cost segregation assignments annually.

The Portfolio Assistant assists the Manager(s) in the day-to-day management of all aspects of operations for the assigned portfolio, in accordance with the goals and objectives of the individual Clients. Depending upon the composition of the Asset Services Team, the Portfolio Assistant may perform some of the duties of the Administrative Assistant.

Essential Functions

Leasing:

• Partner with Manager(s) and leasing team members to ensure that all vacant space is in “market ready” condition
• Maintain building floor plans, vacant space log, and stack plans
• Coordinate approval of and track process of leases, contracts, notices, and other time sensitive documents
• Distribute lease documents to Owner, Administrative Assistant, and Tenant
• Coordinate signage, keys, and distribution of property information sheet to Tenant
• Receive, code, and track all invoicing related to lease commissions
• As directed by Manager(s), assist Administrative Assistant in creating and maintaining lease and property files

Financial and Reporting:

• Code invoices/payables in a timely manner each week
• Research problems with invoices, including resolving past due balances
• Create Account Action Request forms for Manager’s signature
• Assist Manager(s) with annual budgeting process, to include re-bid of service contracts as directed by Manager(s)
• Assist Property Manager(s) in preparation of monthly Owner statements - assembles, copies, and distributes financial reports
• Review annual CAM reconciliations as assigned by Manager(s) and report findings to Manager(s)
• Prepare new vendor set up form for approval by Manager
• Request appropriate insurance information from new vendors ensuring all required information is received
• As directed by Manager(s), assist in the collection of delinquencies by contacting tenants and preparing demand notices and pay or vacate notices
• Assist with the budget preparation process, to include contacting utility companies, vendors, and contractors to obtain upcoming rate increases; compiling data for Manager(s) and property accountant for final budget input

Operations:

• Prepare weekly and/or monthly inspection reports for Engineer(s) to complete
• Maintain and update "Desk Notes"
• Prepare maintenance and service contracts for Manager’s signature
• Dispatch vendors/contractors as directed by Manager(s)
• As assigned by Manager(s), respond to and resolve tenant concerns
• As directed by Manager(s), communicate with tenants as required to ensure that tenant needs are met, and that high quality property management service is achieved
• Follow through on any needed repairs or maintenance as directed by Manager(s)
• As assigned by Manager(s), interface with property vendors and contractors to ensure prompt response to maintenance issues
• Ensure on-going contracted vendor services are performed on schedule, and that services meet contract specifications
• As directed by Manager(s), review specifications and make recommendations to Manager(s) for necessary changes or updates
• Request and review bids from contracted service providers; make recommendations to Manager(s)
• As directed by Manager(s), partner with Building Engineers or contracted maintenance staff to schedule repairs and work orders
• Track tenant and vendor insurance compliance

Tenant and Owner Relations:

• Maintain courteous, service-oriented rapport with tenants
• Promote and foster confident, comfortable relationships with owners
• As directed by Manager(s), make collection calls to delinquent tenants

Other Functions

• Perform other duties or projects as requested

Essential Qualifications To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the competencies (minimum knowledge, skill, and ability) required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Skills and Ability

• Good communication and organizational skills.
• Professional ability to build relationships with clients, vendors and internal partners
• Professional communication etiquette with good oral and written communication skills
• Demonstrated ability to prioritize, multi-task and utilize resources to execute tasks within a deadline-oriented environment
• Ability to speak, write and understand English
• Exceptional attention to detail
• Strong customer service skills with the ability to interface with prospective tenants, owners, employees, and management
• Demonstrated initiative and trouble shooting skills
• Demonstrated ability to recognize high quality maintenance work
• Demonstrated ability to draft quality, well written emails, reports and letters

Education/Education

• High School Degree or Equivalent

Required Knowledge

EXPERIENCe REQUIRED

• 2+ years commercial property management experience
• This is a standard office environment with standard office noise like talking, office equipment, etc.

Physical Demands

• While performing the duties of this job, the employee is regularly required to talk and hear. The employee must frequently sit and use a computer for long periods of time. Specific vision abilities are required to do this job including close vision. The employee must be able to conduct physical inspections and tours, to include the use of stairs and roof access ladders. The employee must sometimes lift and/or move items up to 10 pounds.

Supervisory Responsibilities

• There are no direct supervisory responsibilities. However, the Portfolio Assistants act as a lead and may direct work for Building Engineers and Administrative Assistants.

Kidder Mathews is an equal opportunity employer does not discriminate based on race/ethnicity, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status, or any other status protected by law. Kidder Mathews will accommodatecandidates with disabilities to complete this application. Please [e-mail] you need an accommodation. AZ, NV, OR & WA residents: We Participate in E-Verify.CA residents: We collect various personal data from employees and applicants for purposes related to employment.Please review the Notice of Data Privacy for Employees and Applicants for detailed information concerning what information we collect, the purposes for which information is collected and with whom such information may be shared . You can find this notice on our careers page at https://kidder.com/careers/. Qualified individuals with arrest or conviction records will be considered for employment in accordance with the Los Angeles and San Diego County Fair Chance Ordinance for Employers and the California Fair Chance Act.