Lathrop, CA

Lathrop property management — River Islands & new-home rental specialists

River Islands, Mossdale Village, Stanford Crossing — Lathrop's newest master-planned communities are full of brand-new rentals, and many are owned from out of the area. We're the local team that leases and manages them. 300+ units managed, many our own.

Quick Summary: SUM Property Management is Lathrop's new-construction rental specialist, managing homes across River Islands, Mossdale Village, and Stanford Crossing. Our transparent pricing features a 7% monthly management fee, tenant placement at 50% of one month's rent, and $0 upfront setup costs. Average tenant placement takes 2–3 weeks, and we handle everything from AI-powered screening to 24/7 maintenance response.

calendar_today Schedule a meeting with us phone (209) 299-2100

40,942

Population (Jan 2026)

5.5%

Annual growth rate

5th

Fastest growing city in CA

94.8%

New housing that is single-family

check_circle 7% flat management fee check_circle Tenant placed in 2–3 weeks check_circle Zero hidden fees check_circle CA DRE Licensed

Why Lathrop

The local team for River Islands & Lathrop's new-home rentals

Lathrop added 2,151 new residents in 2025 alone — that's a 5.5% annual growth rate, making it the 5th fastest growing city in California. With 94.8% of new housing being single-family, the market is overwhelmingly brand-new homes.

Many of those new builds are bought by Bay Area and out-of-area investors who need boots on the ground. We specialize in leasing and managing new-construction rentals in River Islands, Mossdale Village, and Stanford Crossing — protecting your builder warranty, handling the first tenant turn, and keeping a premium home earning from day one.

2,151

New residents in 2025

Fastest growing in CA

94.8%

Single-family new builds

Strong

Rental demand pipeline

Our Specialty

River Islands property management

River Islands on Stewart Tract is one of California's largest master-planned communities — up to ~15,000 homes planned at full buildout, built around lakes, trails, and a marina, wired with gigabit fiber, and anchored by the highly rated River Islands Technology Academy. With I-205 and the ACE train minutes away, it draws Bay Area commuters who rent before they buy.

Why River Islands owners hire us

A brand-new home is a different management job than a 40-year-old rental. The first tenant turn sets the tone, builder warranties have to be tracked and used, and a premium home needs to be priced to its finishes — not the neighborhood average. We do all of it, locally, so an out-of-area owner never has to drive the Altamont for a leaky valve.

Whether you bought one new build to rent or you're scaling a portfolio across River Islands, Mossdale Village, and Stanford Crossing, it's the same flat 7% — no setup, no hidden fees. See the full breakdown on our fees page.

villa

New construction

Warranty-fresh single-family homes

train

Bay Area commuters

I-205 & ACE train renter pool

school

Top-rated schools

River Islands Technology Academy

router

Premium amenities

Gigabit fiber, lakes, trails & marina

What We Handle

Full-service property management in Lathrop, CA

psychology

AI-Powered Tenant Screening

Credit, background, income, eviction history via Experian & CIC. Predictive risk scoring to minimize delinquencies.

build

In-House Maintenance

Licensed handymen and contractors on staff. Before-and-after photos on every job. Competitive in-house rates.

payments

Rent Collection & Accounting

Online or cash at CVS, 7-Eleven & Walmart. Monthly P&L statements. Annual 1099s. Real-time owner portal.

apartment

Massive Listing Network

Listed on 30+ platforms: Zillow, Apartments.com, Redfin, Trulia, Zumper and more. Maximum exposure, fast.

shield

Owner Privacy Protection

Your contact info is never shared with tenants. All communications routed through our team. No late-night calls.

gavel

Legal Compliance & Evictions

AB 1482 compliance, eviction coordination with our attorney network. Notice to possession, handled.

Transparent Pricing

Property management fees in Lathrop — simple 7-50-0

Two fees. No setup. No surprises.

Monthly Management Fee

of collected rent per month

check_circle No setup or onboarding fee

check_circle Bulk discount available for multiple properties

check_circle Monthly owner statements included

50%

Tenant Placement Fee

of one month's rent (one-time)

check_circle All advertising costs included

check_circle Open house management

check_circle Full tenant screening

check_circle Lease preparation & signing

Hidden Fees

zero, none, nada

check_circle No cancellation fee

check_circle No inspection fee

check_circle No lease renewal fee

check_circle All optional services itemized in contract

Local Expertise

Lathrop communities we serve

River Islands

Mossdale Village

Stanford Crossing

West Lathrop

Stewart & Jasper

Central Lathrop

Lathrop Crossing

South Lathrop

Downtown Lathrop

Atherton

Mountain House

Adjacent community

Reviews

Trusted by Lathrop property owners on Yelp

starstarstarstarstar

"Amazing service! This is my go-to property management company. I left another company that was not up to par with my expectations and communication was lacking. This by far was the best decision I have ever made to switch. The team has exceeded my expectations."

— Lisa W., Las Vegas, NV via Yelp

starstarstarstarstar

"Great and efficient service. Excellent response time. They made my tenants happy and made sure they pay rents on time."

— Rosanna W., New York, NY via Yelp

starstarstarstarstar

"William has been working with me to manage my property for a year. He is a good communicator, very responsive, and pays attention to details. He is also a good problem solver — he can resolve most property and tenant issues timely and cost effectively. He is a trusted partner to work with."

— Gordon W., Fremont, CA via Yelp

FAQ

Lathrop property management FAQ

How much does property management cost in Lathrop, CA? expand_more

SUM charges 7% of collected rent per month and 50% of one month's rent for tenant placement. No setup fee, no hidden charges. A bulk discount is available when you bring on multiple properties.

How long does it take to find a tenant in Lathrop? expand_more

Our average leasing time is 2–3 weeks from listing to move-in. We syndicate your Lathrop rental to 30+ platforms including Zillow, Apartments.com, and Redfin.

What types of properties do you manage in Lathrop? expand_more

We manage single-family homes, duplexes, triplexes, fourplexes, small apartment buildings, condos, and townhomes throughout Lathrop.

Do you manage properties outside of Lathrop? expand_more

Yes — we manage rentals across 11 Central Valley cities, including Stockton, Modesto, Tracy, Lathrop, Manteca, Lodi, Turlock, Merced, Fresno, and Visalia.

Are you licensed in California? expand_more

Yes. CA DRE Broker #01004922 | Agent #02263113 | Corporate #02253300.

How do you screen tenants in Lathrop? expand_more

AI-powered screening via Experian and CIC — credit, income verification, rental history, eviction records, and collection history all checked with predictive analytics.

Also Serving

Property management across San Joaquin County & beyond

Our largest market is just up the road in Stockton, and we manage rentals throughout the surrounding Central Valley. Own properties in more than one city? We cover them all under one team.

Stockton Tracy Manteca Modesto Lodi Turlock

Own a rental in Lathrop?

Get a free consultation and see what your property should be earning in today's market.

No obligation. We respond within one business day.

calendar_today Schedule a meeting with us View Our Services arrow_forward

Newsletter

Get landlord tips in your inbox

Drop your email for the occasional Central Valley landlord update — and, if you'd like, we'll reach out about managing your property. No spam, unsubscribe anytime.