SANTA CLARA COUNTY · DECLINE-IN-VALUE REVIEW

Your assessed value went up.
The market didn't.

RollCheck fills the real BOE-305-AH application — the same PDF the county issues — directly from your address and tax bill. Sign it, mail it. A separate evidence packet is prepared for your hearing, kept apart as the form itself requires.

Check my address See how it works

Regular filing period closes September 15, 2026 · $290 county fee is non-refundable, so it pays to know your number first

Sample outcome — 20636 Oak Creek Ln, Saratoga

County assessed value$1,813,072

Estimated market value (Jan 1, 2026)$1,730,000

Effective tax rate1.167%

Estimated first-year savings$969

FILE BY 9/15

THE PROCESS

Five steps, in the order the county actually expects them

Enter your address

We pull your parcel and current assessed value for Santa Clara County.

Photo of your tax bill

We read the APN, assessed value, and land/improvements split automatically.

Comparable sales

We find sales near your lien date and compute your requested value.

Fill the real form

The official BOE-305-AH is filled directly — not a summary, the actual county PDF.

Sign and mail

Evidence stays separate for your hearing, per the form's own instructions.

START HERE

Check your address

1 · Property & Owner

2 · Comparables

3 · Documents

Property address

County

Owner name (as on the tax bill)

Daytime phone

Owner-occupied principal residence?

Filing status

Mailing address is the same as the property address

Photo or PDF of your property tax bill (optional, but speeds this up)

Click to upload or drag a file here · JPG, PNG, or PDF

or enter it manually

Assessor's Parcel Number (APN)

Tax Bill / Bill ID number

Total assessed value

Land value (from bill, optional)

Improvements value (from bill, optional)

RollCheck fills the county's own BOE-305-AH application from information you provide and prepares a hearing evidence packet — this is document preparation, not legal advice or representation. You review, sign, and file everything yourself, and you attend any hearing. Savings estimates are based on comparable sales data and are not guaranteed; the Assessment Appeals Board makes the final determination. RollCheck is not affiliated with the County of Santa Clara. Prepared under license of a California DRE-licensed real estate professional.

Your assessed value went up.
The market didn't.

Five steps, in the order the county actually expects them

Enter your address

Photo of your tax bill

Comparable sales

Fill the real form

Sign and mail

Check your address

BOE-305-AH — filled application

Hearing evidence packet

One flat fee. Nothing held back.

$129 flat

$290, paid by you

By referral

Your assessed value went up.The market didn't.

Five steps, in the order the county actually expects them

Enter your address

Photo of your tax bill

Comparable sales

Fill the real form

Sign and mail

Check your address

BOE-305-AH — filled application

Hearing evidence packet

One flat fee. Nothing held back.

$129 flat

$290, paid by you

By referral

Complete your order

Your assessed value went up.
The market didn't.