Menifee
306 sq ft · Studio · 1 ba
Studio B
Menifee
About 15' × 20' — we derived this from the floor area
Confirm the final square footage with the city.
Southwest Riverside County
Will an ADU fit in your back yard?
Your real lot, your city's setbacks, in about ten seconds.
- Free
- No account
- No phone number
Aerial: USGS/USDA NAIP
What you get
County parcel boundary, the county's footprint of your existing house, your city's setbacks subtracted, and a real plan you can move around what's left.
- Your parcel
- Existing house
- Where you can build
- ADU plan
A real Temecula lot. Actual tool output, not a mockup. Aerial: County of Riverside, 2020.
21 plans your cities have already approved, drawn to the same scale so you can compare them.
See all plansLake Elsinore
400 sq ft · 1 bd · 1 ba
Garage Conversion
Lake Elsinore
About 20' × 20' — we derived this from the floor area
Menifee
415 sq ft · Studio · 1 ba
Studio A
Menifee
About 21' × 20' — we derived this from the floor area
Confirm the final square footage with the city.
Wildomar
493 sq ft · Studio · 1 ba
Studio
Wildomar · Plan 3447
29' × 17' footprint, from the plan sheet
Lake Elsinore
495 sq ft · 1 bd · 1 ba
New ADU (small)
Lake Elsinore
About 21' × 24' — we derived this from the floor area
Temecula
499 sq ft · Studio · 1 ba
Studio
Temecula · Plan 14602
About 29'4" × 17' — we derived this from the floor area
Menifee
586 sq ft · 1 bd · 1 ba
1 Bedroom 1B
Menifee
About 24' × 24' — we derived this from the floor area
Confirm the final square footage with the city.
Temecula
625 sq ft · 1 bd · 1 ba
1 Bedroom
Temecula · Plan 14603
36'9" × 17' footprint, from the plan sheet
Wildomar
646 sq ft · 1 bd · 1 ba
One Bedroom
Wildomar · Plan 3448
38' × 17' footprint, from the plan sheet
Menifee
730 sq ft · 1 bd · 1 ba
1 Bedroom 1A
Menifee
About 28' × 26' — we derived this from the floor area
Confirm the final square footage with the city.
Lake Elsinore
735 sq ft · 2 bd · 1 ba
New ADU (large)
Lake Elsinore
About 28' × 26' — we derived this from the floor area
Temecula
749 sq ft · 1 bd · 1 ba
1 Bed, larger
Temecula · Plan 14604
44' × 17' footprint, from the plan sheet
Wildomar
749 sq ft · 2 bd · 1 ba
Two Bedroom A
Wildomar · Plan 3449
35' × 28' envelope — the building is L-shaped
Menifee
779 sq ft · 2 bd · 2 ba
2 Bedroom 2B
Menifee
About 30' × 26' — we derived this from the floor area
Confirm the final square footage with the city.
Temecula
909 sq ft · 2 bd · 2 ba
2 Bedroom
Temecula · Plan 14605
40' × 31' envelope — the building is L-shaped
Menifee
910 sq ft · 2 bd · 2 ba
2 Bedroom 2A
Menifee
About 35' × 26' — we derived this from the floor area
Confirm the final square footage with the city.
Wildomar
994 sq ft · 3 bd
Three Bedroom A
Wildomar · Plan 3451
38' × 29' envelope — the building is L-shaped
Confirm the final square footage with the city.
Wildomar
1,139 sq ft · 2 bd
Two Bedroom B
Wildomar · Plan 3450
34' × 31' envelope — the building is L-shaped
Temecula
1,194 sq ft · 3 bd · 2 ba
2–3 Bedroom
Temecula · Plan 14606
37'8" × 35' envelope — the building is L-shaped
Wildomar
1,195 sq ft · 3 bd
Three Bedroom B
Wildomar · Plan 3446
43' × 34' envelope — the building is L-shaped
Menifee
1,198 sq ft · 3 bd · 2 ba
3 Bedroom 3A
Menifee
About 40' × 30' — we derived this from the floor area
Confirm the final square footage with the city.
Plans are drawn from each city's published dimensions. The drawing is the footprint we site on your lot — the architectural drawings belong to their designers.
Three steps, ten seconds
- 1
We find your parcel
Your actual lot shape from the county Assessor — not a square around a pin.
- 2
We subtract the setbacks
Your city's setbacks and the house already there. Green is what's left.
- 3
You drag a real plan in
21 pre-approved plans. Move and rotate until one fits — or none do.
Where this goes
Two ways this ends
Both are free to you. You can stop after the first, and most people do.
1
Understand your own lot
The whole lot check, with nothing asked of you.
- Your real parcel boundary and buildable area
- Which pre-approved plans fit, and where
- No name, email or phone number to see the result
- A written report by email, if you want one
2
Get matched with a builder
Only if you ask for it.
- One licensed builder per city, exclusively — not five
- We name them before we introduce you
- A call from us first, not a call centre
- No builder hears about you unless you ask
We are not a builder. We do not design, build or quote construction work, and we are not licensed to. This is a planning tool. We are paid by the builder when we make an introduction you asked for — which is also why we would rather tell you early that a lot does not work than sell you a conversation about it.
The difference
Everywhere else
Phone number first. A salesperson calls. Week three you find out your lot is too narrow.
Here
Answer first. You decide whether you want to talk to anyone at all.
- Not a contractor. One licensed local builder, named up front — not five.
- Every number shows its source. Your city's ordinance, or the California minimum. We say which.
Pick your city
Setbacks, plan catalogs and fees are all local. Six cities, each one researched against its own adopted ordinance.
Murrieta
$2,388/mo median rent
27,424 houses · built ~2000 · 70% owner-occupied
Statewide rules · 24 ADUs permitted in 2025
5 plans
Temecula
$2,347/mo median rent
28,993 houses · built ~1998 · 68% owner-occupied
5 city plans · 14 ADUs permitted in 2025
7 plans
Menifee
$2,110/mo median rent
32,615 houses · built ~2001 · 80% owner-occupied
7 city plans · 25 ADUs permitted in 2025
3 plans
Lake Elsinore
$2,078/mo median rent
16,949 houses · built ~2002 · 71% owner-occupied
3 city plans · 24 ADUs permitted in 2025
Perris
$1,876/mo median rent
15,840 houses · built ~2000 · 69% owner-occupied
Statewide rules · 33 ADUs permitted in 2025
6 plans
Wildomar
$2,003/mo median rent
7,500 houses · built ~1992 · 78% owner-occupied
6 city plans · 12 ADUs permitted in 2025
What the state guarantees you
Statewide floors. No city, ordinance or HOA can go below them.
- 800sq ftMinimum size every city must allow
- 4ftMost they can demand for side and rear setback
- 16ftHeight a detached ADU is allowed at minimum
- 30daysReview clock on a pre-approved plan
Your HOA cannot prohibit an ADU on a single-family lot. It can still apply reasonable architectural standards, which costs calendar time, not permission.
Start with your neighborhood
Lot depth, build era, septic or sewer. These change street by street, not city by city.
Does it cost anything to see my result?
No. The lot check, the buildable area, the plan fitting and the fit result are all free and we don't gate them behind a form. If you want the written report emailed to you, or an introduction to a builder, that's when we ask for contact details.
How accurate is the lot boundary?
It comes from the Riverside County Assessor's parcel layer, which is the same data the county uses. Public parcel boundaries typically sit within 3 to 25 feet of the surveyed line. Since the side and rear setback is only 4 feet, that error can be larger than the setback itself — which is exactly why we report three outcomes rather than yes or no, and why we never call this a zoning determination.
Why do you say "fits", "tight" or "unlikely" instead of yes or no?
Because a yes or no would be dishonest at this data quality. "Fits" means it clears the setbacks with room to spare. "Tight" means it fits on paper but the margin is inside the measurement error, so a surveyor needs to confirm. "Unlikely" means the footprint doesn't fit the buildable area at all. Only a survey and your city's plan check produce a real answer, and we'd rather set that expectation now.
What doesn't this check?
Easements, topography and slope, sewer or septic capacity, electrical panel capacity, and soil conditions. Any one of those can stop a project that passes the geometry check. We flag the known neighborhood-level risks — septic prohibitions, fire hazard zones, unincorporated parcels — but a site visit is the only way to clear them.
Will you sell my information to a bunch of contractors?
No. We work with one builder per city, exclusively. If you ask for an introduction, your details go to that one builder and nobody else. Under California law handing your information to a builder counts as a sale of personal information, so you also get a standing opt-out link in our footer.
See what fits in your yard
Free, no account, no phone number.