House report
638 Diamond St
4 stories · 8,740 sqft · RM1 · built 2024
Investor / LLC · assessed $744K · sold 3×. On the 600 block of Diamond St.
Reading this house's deeds, permits and assessments…
What to do with this
The record, translated into moves — what a buyer, the owner, and a landlord would each want to check next under Philadelphia's actual rules.
If you’re buying
Today's $3,696/yr reflects a 10-year abatement. It steps up every year and reaches about $10,413/yr in 2035 — $6,717/yr more. Price the full bill, not the current one.
The most recent recorded deed moved for nominal consideration, within one family. That is where tangled-title problems live — budget a real title search. (Occupants untangling an inherited deed can get help from the city's Tangled Title Fund.)
If you own it
Excavation deeper than 5 feet, or within 10 feet of an adjacent structure, legally requires the developer to survey neighboring homes first and give owners 10 days' written notice. Insist on the pre-construction survey — it is your evidence if cracks appear.
If you’re the landlord
Renewal requires city tax clearance and zero open L&I violations on the property. A lapsed license suspends the right to collect rent or evict.
Derived from this house's public records and the city's rules as of 2026 (abatement ordinance, Homestead, rental licensing, lead certification, L&I process, excavation protections). Informational only — not legal, tax, or investment advice.
Who's behind it
Prestige Design On Diamond LLC · corporate / LLC owner
• Holds an active rental license for this address
• The last transfer was a nominal/family deed, not an open-market sale
The investment read
How this house has moved and where it's pointed: the city's assessed value (not a listing price) over 12 years, charted against its block; appreciation is that history's pace, and the 5-year figure simply extends it. Yield estimates rent-vs-price from area rents. Ask the analyst below to dig into any number.
Value vs. the block, over time — sales, permits & L&I events marked on the line
Bought for $22K in 2017, built new under a 2022 permit (tax-abated).
- 2017 $22KLand buy
- 2021 4 L&I violationsL&I
- 2022 $290KLand buy6 L&I violationsL&ICombined Lot Line Relocation and New Dev…PermitNew construction, addition, GFA changePermitNew ConstructionPermitNew ConstructionPermit
- 2023 New ConstructionPermitNew Construction or AdditionsPermitAddition and/or AlterationPermit
- 2025 AlterationsPermit
Flags: tax-abated — the bill lags real value · active rental license · long-held within one family. Informational only — not investment advice or a consumer report (FCRA).
The abatement clock
This house pays about $3,696/yr under a 10-year tax abatement that steps down every year. In 2035 the bill reaches its full ~$10,413/yr — a step up of $6,717/yr, 8 assessment years out. Drag the slider.
now: ($743,900 assessed − $479,862 abated) × 1.3998% ≈ $3,696/yr
2035: $743,900 assessed × 1.3998% ≈ $10,413/yr
The abated slice shrinks ~10% a year (post-2022 program, started 2025) — reassessments move both lines. After expiry an owner-occupant can claim the Homestead Exemption (~$1,400/yr off); an abated home can't hold both.
The house, on paper
The city assessor's field record — the physical spec sheet behind the assessed number.
OPA field-assessment attributes. Condition and grade are the assessor's codes, not an inspection.
Run the numbers
What owning 638 Diamond St takes, at your price and your rate. Taxes are this house's actual bill from the city record; rent starts at the area median. Assessed value is not an asking price — set the price slider to the real one.
Estimates for orientation, not advice. Assumes a 30-year fixed loan, $1,400/yr insurance, 1% of price/yr maintenance; taxes from this parcel's record (with the abatement toggle above).
Next door: 636 Diamond St · 634 Diamond St
Where this comes from
- Assessment, spec sheet & owner — OPA Property Assessments, Office of Property Assessment
- Sales & deed history — Realty Transfer Tax records, Recorder of Deeds
- Permits, violations & inspections — L&I Property History · Atlas
- Back taxes & liens — Real Estate Tax Balances, Dept. of Revenue
- Zoning appeals — L&I & Zoning Board appeals
- Neighborhood income & rents — US Census ACS 5-year estimates
- Historical mortgage rates — Freddie Mac Primary Mortgage Market Survey, annual averages
- Imagery — Street photo © Google · Aerial © Esri, Maxar
City datasets are fetched live from OpenDataPhilly (phl.carto.com) and cached briefly. AI-written passages are generated from these records only and rejected if they state a number the record doesn't hold.
First time here?
This is 638 Diamond St,
on paper.
Built 2024. Every deed, permit, L&I visit, tax bill and sale for this house — plus its whole block.
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Who owns what, what they paid, what they built, what they owe. Scroll and it's all here — the paid part is not the data.
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Official city record ↗ · L&I history ↗ · See the whole block · Download this record (JSON)