Medical office space · data as of September 2026
Medical office space for lease in Riverside
16 buildings with 61,169 SF of medical space available across 23 listed spaces. The largest like group, five Class C buildings on Modified Gross, asks a median $2.00/SF/month.
Of the 23 spaces listed in Riverside this September, only one is 4,200 SF or larger.
The math: eight exam rooms take roughly 3,080 to 4,800 rentable SF, at 385 to 600 SF a room. Here, four listed spaces suit one or two rooms, 18 fit three to seven, and the largest single space is 15,000 SF, about 25 to 38 rooms.
Here's the part that gets less attention. Landlords here quote three lease structures: Modified Gross in eight buildings, at $1.60 to $2.83/SF/month; NNN in four buildings and Full Service in one building. From the real estate side, the structure is part of the price. On an NNN quote, taxes, insurance and common-area costs come on top, so ask for the operating expense history (what those costs actually ran) before setting it next to a Modified Gross number.
Short version: only 1 of 23 spaces is 4,200 SF or larger, and landlords there quote three lease structures. Comparing rates without converting structures compares labels. Is your current lease Full Service, NNN or Modified Gross, and do you know what it costs all in?
Riverside at a glance
- Buildings
- 16
- Medical space available
- 61,169 SF
- Vacant now
- 57,278 SF
- Largest single space
- 15,000 SF
Asking rents by lease structure
- Modified Gross$1.60–$2.83/SF/mo8 buildings
- NNN$2.00–$2.50/SF/mo4 buildings
- Full Service$4.88/SF/mo1 building
3 buildings withhold pricing or don't publish it. Those numbers come from the landlords on request.
Full Service includes operating costs and utilities; NNN adds taxes, insurance and common-area costs on top of base rent; Modified Gross splits them. Compare structures, not just rates. These ranges span every building class and age; the questions below compare like with like.
Available spaces by size
- 1–2 rooms4
- 3–4 rooms10
- 5–7 rooms8
- 8–12 rooms0
- 13+ rooms1
Room counts assume 350 to 500 usable SF per exam room, with rentable area 10% to 20% above usable.
Building class
- Class B8
- Class C8
Hospitals within 5 miles
- Riverside Community Hospital, Riverside1.7 mi
- Parkview Community Hospital Medical Center, Riverside3.2 mi
- Pacific Grove Hospital (psychiatric), Riverside0.5 mi
Straight-line miles from the center of the Riverside buildings to the Census Bureau geocode of each hospital's address on the CMS hospital list.
Buildings with medical space available
| Building | Class | Built | Medical space | Largest space | Fits | Asking rent | |
|---|---|---|---|---|---|---|---|
| 4444 Magnolia Ave De Anza Surgery Center | C | 2009 | 15,000 SF1 space
| 15,000 SF | ~25–38 rooms | $2.46/SF/mo Modified Gross | |
| 525 Technology Ct | B | 2005 | 6,982 SF2 spaces
| 3,832 SF | ~6–9 rooms | $1.85/SF/mo Modified Gross | |
| 3660 Park Sierra Dr | B | 2006 | 6,000 SF2 spaces
| 3,294 SF | ~5–8 rooms | Withheld ask us | |
| 4500 Brockton Ave Evans Park Medical Arts Building | B | 1988 | 5,378 SF2 spaces
| 3,244 SF | ~5–8 rooms | $2.83/SF/mo Modified Gross | |
| 4510 Brockton Ave Riverbrock Medical Plaza | B | 2014 | 5,345 SF2 spaces
| 3,051 SF | ~5–7 rooms | $4.88/SF/mo Full Service | |
| 1764 Columbia Ave Bldg D | B | 2022 | 4,818 SF2 spaces
| 2,818 SF | ~4–7 rooms | $2.50/SF/mo NNN | |
| 10323 Cypress Ave | C | 1950 | 3,120 SF2 spaces
| 1,560 SF | ~2–4 rooms | $2.00/SF/mo Modified Gross | |
| 7065 Indiana Ave | B | 2008 | 2,890 SF2 spaces
| 1,445 SF | ~2–3 rooms | $2.00/SF/mo NNN | |
| 3731 Tibbetts St | C | 1967 | 2,562 SF1 space
| 2,562 SF | ~4–6 rooms | $1.95/SF/mo Modified Gross | |
| 3511 Madison St | C | 1990 | 2,079 SF1 space
| 2,079 SF | ~3–5 rooms | Withheld ask us | |
| 7000 Indiana Ave | B | 2002 | 1,800 SF1 space
| 1,800 SF | ~3–4 rooms | Withheld ask us | |
| 7154 Magnolia Ave The Shrader Dental Building | C | 1927 | 1,754 SF1 space
| 1,754 SF | ~2–4 rooms | $2.50/SF/mo NNN | |
| 1820 Columbia Ave Bldg B | C | 2022 | 1,029 SF1 space
| 1,029 SF | ~1–2 rooms | $2.45/SF/mo NNN | |
| 9473 Hayes St | C | 1976 | 871 SF1 space
| 871 SF | ~1–2 rooms | $2.30/SF/mo Modified Gross | |
| 6850 Brockton Ave | C | 1969 | 840 SF1 space
| 840 SF | ~1–2 rooms | $1.75/SF/mo Modified Gross | |
| 3777 Tibbetts St | B | 1985 | 701 SF1 space
| 701 SF | ~1 room | $1.60/SF/mo Modified Gross |
Availability and asking rates change frequently and are subject to verification. Current terms are confirmed before any tour.
Compared to nearby
| Area | Buildings | Medical space | Published asking rents ($/SF/mo, buildings) |
|---|---|---|---|
| Riverside | 16 | 61,169 SF | Modified Gross $1.60–$2.83 (8) · NNN $2.00–$2.50 (4) · Full Service $4.88 (1) |
| Moreno Valley and Perris | 9 | 33,938 SF | Full Service $2.00 (1) · Modified Gross $2.40–$2.70 (1) · NNN $2.00 (1) |
| Corona and Eastvale | 17 | 103,155 SF | NNN $1.35–$2.80 (7) · Modified Gross $2.20–$2.45 (5) · Full Service $1.85–$2.80 (2) |
| San Bernardino | 29 | 194,489 SF | Modified Gross $1.45–$2.90 (10) · NNN $1.15–$2.25 (4) · Full Service $1.55–$2.00 (2) |
| Inland Empire overall | 219 | 1,107,256 SF | NNN $1.10–$3.25 (75) · Modified Gross $1.20–$3.83 (57) · Full Service $1.50–$10.00 (13) |
Lowest to highest published building asking rents, grouped by lease structure; the three most common structures are shown. Each range mixes building classes and ages. See the full rent trends report.
Questions about medical office space in Riverside
How many medical office buildings have space available in Riverside?
Riverside has 16 buildings with medical office space available as of September 2026: 61,169 SF across 23 listed spaces. Of that, 57,278 SF is marked vacant now, and the largest single space is 15,000 SF, about 25 to 38 exam rooms.
What do medical office leases cost in Riverside?
In Riverside, Class C buildings on Modified Gross ask $1.75 to $2.46/SF/month, with a median of $2.00, across five buildings built from 1950 to 2009. Each building counts once, at the middle of its published range. The remaining eight priced buildings sit in classes and structures with fewer than five buildings each, too few to call typical. Another three buildings post no asking rent; those landlords quote on request. Full Service includes operating costs and utilities, NNN adds taxes, insurance and common-area costs on top, and Modified Gross splits them, so compare total occupancy cost, not the headline rate.
How much space does a medical practice need in Riverside?
About 385 to 600 rentable square feet per exam room. That's 350 to 500 usable square feet (the room plus its share of waiting, work areas, storage, restrooms and halls), and leases are quoted in rentable square feet, which run 10% to 20% above usable in multi-tenant medical buildings. In Riverside, the listed spaces break down as 4 for 1 to 2 rooms, 10 for 3 to 4, 8 for 5 to 7 and 1 for 13 or more.
Which hospitals are near Riverside?
Riverside Community Hospital is the closest hospital, 1.7 miles from the center of the Riverside trade area. Also within 5 miles: Parkview Community Hospital Medical Center, Riverside, 3.2 miles; Pacific Grove Hospital (psychiatric), Riverside, 0.5 mile. Distances are straight-line miles from the Census Bureau geocode of each hospital's address on the CMS hospital list.
How current is the Riverside availability?
It's from the September 2026 survey of medical office availability. Spaces lease and asking terms change between monthly pulls, so current availability, rent and tenant improvement allowance are confirmed with each landlord before any tour.
Send me what fits in Riverside
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Your advisor
Jamal Brown
Real Estate Broker · CA DRE #01780052
Jamal has spent more than 23 years in commercial real estate and has negotiated and audited more than 1,000 leases. He represents medical practices as tenants and buyers, never landlords, across Los Angeles, Orange County, San Diego and the Inland Empire. Every request sent through this site gets a reply within one business day.
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