The Unpermitted-Work Line on an Offer Sheet

The unpermitted-work line on an offer sheet is the buyer's written price for space the public record does not show: a converted garage, an enclosed patio, a back unit. A useful line says four things: what the space is and how big it is, how the comparable sales treated similar space, which method the deduction uses, and whether any repair inside the space is counted here or elsewhere. If the line is a single number labeled "permits" or "unpermitted risk," you cannot check it, and you should ask for the parts before you compare it with anything.

This article is part of our unpermitted additions and converted garages hub. For the bigger decision of whether to legalize, list or sell as-is, start with the pillar guide, what unpermitted additions cost and how to decide.

Where the line sits on the sheet

A written cash offer works down from a value built on comparable sales to the price, then from the price to your net. The unpermitted-work line is one of the condition deductions in the middle, next to the roof, the panel and the plumbing. The general layout is in reading a cash offer: comps, deductions and the net. This page reads only the one line.

Part of the lineWhat it should sayOn your sheet

The space

What it was, what it is now, and its measured size

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The record

What the assessor and the permit history show for it

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The comps

Whether the comparable sales had similar unpermitted space, and how it was counted

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The method

Value difference, cost to legalize, cost to remove, or a stated mix

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What is excluded

Repairs inside the space that appear on other lines

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Occupancy

Whether anyone lives in the space, and on what terms

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Deduction

The amount, written on its own line

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Part 1: the space and the record

The line should start by describing the space the way a stranger could recognize it: "two-car garage converted to a bedroom and bath," "rear patio enclosed as a den," "detached back unit with a kitchen." Then the size, measured on the walkthrough, and what the public record says. If the assessor's record still shows a garage, or the permit history has no permit for the conversion, the line should say so. That is the gap the buyer is pricing.

If you have pulled the file yourself, bring it. Our guide to looking up your permit history explains where it lives. A permit that was pulled and finaled removes the line altogether, and a permit pulled and never finaled can change it.

Part 2: how the comps treated it

The comparable sales decide how much of this line is real. A buyer can start from two kinds of comps:

• Comps at the legal square footage. Houses of the recorded size, with a garage. Then the unpermitted room is extra, and the question is how much, if anything, a buyer pays for it on top.
• Comps that include similar unpermitted space. Then the room is already inside the starting value, and the deduction should be small or zero, because the comps already carry the discount.

The mistake to watch for is counting the space twice: starting from comps that treat the converted garage as a full bedroom, then deducting for it as if it were worth nothing. Ask which kind of comps the offer used and why.

This is the same evidence a financed buyer's appraiser has to lean on. Fannie Mae's Selling Guide tells the appraiser who finds an addition without the required permit to comment on its quality, appearance and impact, if any, on market value. The reasons are in why appraisers cannot count unpermitted living area.

Part 3: the method behind the number

There are three honest ways to price the line, and the sheet should say which one it uses.

1. Value difference. What the house would bring with the space on record, minus what it brings without. This is the right method when the comps show buyers paying for legal space and the space could plausibly be legalized.
2. Cost to legalize. The buyer's estimate of plans, engineering, fees, corrections and carrying time to put the space on record. Useful when the buyer intends to legalize. The categories are in what legalizing costs beyond the permit fee.
3. Cost to remove. The cost of taking the work out and restoring what it was, usually a garage. This applies only when legalizing is not realistic, and it should say why.

A buyer may blend them, but a blend should still show its parts. "Unpermitted space: per the comps, the room adds little on these blocks; cost to legalize estimated at a dash" is checkable. "Permit risk" is not.

Part 4: what belongs on other lines

A converted garage often needs repairs that would be needed anyway: an extension-cord electrical feed, a window unit for cooling, a roll-up door left behind the drywall. Those can appear on the electrical, mechanical or general repair lines, or inside the unpermitted-work line, but not both. Read the repair lines and the unpermitted line together and look for the same item twice.

Occupancy is the other overlap. If someone lives in the space, the offer may show the occupancy on a separate line or price it into this one. Either is fine as long as it is written down. Whether a tenant in an unpermitted unit has protections that change the buyer's plans is a question for a landlord-tenant attorney, not for the offer sheet.

Part 5: the same space in the other column

Every house here gets two numbers on one sheet, so the unpermitted line has a counterpart in the open-market column. The open-market read, a preliminary estimate, not an appraisal, shows the space two ways where it matters:

As-is cash offerDisclosed listingLegalize, then list

How the space is treated

Priced as it exists, on its own line

Priced at the legal square footage, the room described as bonus space

Counted as legal space

Who pays to legalize

The buyer, if anyone

The next buyer, if anyone

You, before listing

Appraisal risk

None; no lender

Depends on the buyer's loan

Lower once the permit is final

Net to you

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Listing nets more in plenty of these files: when the house is strong at its legal square footage and demand on your blocks is deep, or when the space is simple to permit and would count as a bedroom in the comps. When that is true, the written recommendation says so and you are introduced to a designated local expert, an independently licensed California agent who works your neighborhood. Mr. Cali Offers never lists a house.

A Rancho Cucamonga reading

Rancho Cucamonga shows why the line has to be read with the rest of the sheet. The city incorporated in 1977, taking in the original rancho and parts of the historic communities of Grapeland, Etiwanda and Alta Loma, and it still trades as distinct markets. On a post-war tract house in the older Cucamonga core, the line is typically about a converted garage or an enclosed patio, the usual unpermitted spaces in tracts of that era, priced against nearby tract comps. In Alta Loma, a horse lot can carry a barn or a casita, whose permit history has to be checked like the house's, and the comps have to come from other foothill and equestrian lots. In the newer Etiwanda tracts, a community facilities district special tax has its own line on the sheet, and it should never be folded into the unpermitted-work line. Our Rancho Cucamonga notes describe each area.

Questions to ask about the line

• Which comps did you use, and did any of them have similar unpermitted space?
• Is this a value difference, a cost to legalize or a cost to remove?
• Which repairs inside the space are on other lines?
• Did you see the permit history, or are you assuming there is none?
• Can the price change after an inspection period because of this space? If the space was seen on the walkthrough, it should not be a reason to renegotiate later.

The space also has to be disclosed to whoever buys, cash or financed; see disclosing unpermitted work to a buyer, and ask a real estate attorney about your own duty.

What this looks like in practice

These are the kinds of files that come in, described without names, addresses or figures.

• A seller holding an offer whose only condition line read "permits," with no size, no comps and no method.
• An older Cucamonga tract house where the comps already included converted garages, so the unpermitted line should have been small and was not.
• An Alta Loma horse property where the casita was priced as a removal, and the seller wanted to see what it would bring legalized.

Next step

If you hold an offer and the unpermitted line does not add up, see how houses with unpermitted additions are priced, or call (909) 498-3977. There is no cost and no obligation to get the two numbers and the written report.

Sources

• Fannie Mae Selling Guide B4-1.3-05, Improvements Section of the Appraisal Report: selling-guide.fanniemae.com, accessed November 6, 2026
• California Civil Code section 1102.6 (Transfer Disclosure Statement), copy read on california.public.law, accessed November 6, 2026
• City of Rancho Cucamonga, Special Districts (community facilities districts): cityofrc.us, accessed November 6, 2026
• San Bernardino County, County history (Rancho Cucamonga incorporated 1977 from the original rancho and parts of Grapeland, Etiwanda and Alta Loma): main.sbcounty.gov, accessed November 6, 2026

Permit, code and ADU questions are decided by the city or county building department. Cash offers come from independent buyers and investors who buy for their own account and may resell for profit; a cash offer is generally below what the open market would bring. Any value shown is a preliminary estimate, not an appraisal. Nothing here is legal, tax or financial advice.