Thailand real estate terms: A
Letter A covers alien quota, assessed value, and attorney-in-fact. These terms appear early in almost every foreign condo purchase and at Land Office transfer. Understanding them helps you follow your lawyer memo and spot agent errors before you pay a deposit.
Return to the glossary hub or browse the property hub for process guides.
Alien quota, assessed value, and attorney-in-fact vocabulary for foreign buyers.
Quota and assessed value appear before deposit on almost every Bangkok resale.
Land Office verifies quota, tax base, and POA format in one counter session.
Glossary terms do not replace licensed property lawyer review before deposit.
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Terms starting with A
Each entry below explains the term in context of Thai property law, Land Office practice, and common expat mistakes. This is orientation, not legal advice for your specific transaction.
Alien quota (foreign quota)
Summary: Under the Condominium Act, no more than 49% of total sellable area in a condo project may be held by foreigners.
In Thai property law context: The alien quota is the single most important legal constraint for foreign condo buyers. The juristic person maintains a foreign ownership register showing which units count toward the 49% cap. When quota is exhausted, a foreigner cannot register freehold title even with full payment and valid FET documentation. Quota is calculated on sellable area, not unit count, so two buildings in the same project can have different foreign availability.
Land Office and market practice: Before paying a reservation deposit, request a juristic person certificate or lawyer letter confirming the unit sits inside remaining foreign quota. Resale transactions need the same check because a Thai national buyer releasing a unit does not automatically free quota if the building is at cap. Some agents quote verbal quota availability. Land Office registration fails without documentary proof.
Where you see this term: Foreign quota appears in juristic person letters, sale and purchase agreements, Land Office transfer forms, and lawyer due diligence memos. You may also see Thai language references to alien ownership ratio or foreign ownership register.
Common mistakes:
- Assuming quota exists because other foreigners live in the building
- Paying deposit before written juristic person confirmation
- Believing marriage to a Thai national bypasses quota for condo freehold in your name
Assessed value
Summary: The government appraisal used by Land Office for transfer tax calculations, often differing from market price and declared sale value.
In Thai property law context: Assessed value is not the price you negotiate with the seller. The Department of Lands and Revenue Department maintain appraisal schedules by location, property type, and use category. At transfer, officials compare declared price, contract price, and assessed value. Taxes frequently calculate on the highest figure. Foreign buyers who budget only the net SPA price often face surprise cash calls at Land Office when assessed value exceeds their offer.
Land Office and market practice: Your property lawyer requests a pre-transfer tax estimate using current appraisal data. This estimate belongs in your total acquisition budget alongside transfer fee, specific business tax, and withholding tax components. Assessed value also affects annual land and building tax notices after you take ownership. A low contract price does not guarantee a low tax base if appraisal is higher.
Where you see this term: Assessed value appears on Land Office fee calculation sheets, Revenue Department tax forms, and lawyer transfer day schedules. Sellers marketing quick flips within five years should disclose possible specific business tax driven by assessed value, not only declared price.
Common mistakes:
- Budgeting transfer costs using contract price only
- Assuming seller tax quotes apply to buyer without lawyer verification
- Ignoring appraisal risk when negotiating off-plan purchase price
Attorney-in-fact
Summary: A person authorised by power of attorney to sign transfer documents on behalf of the buyer or seller at Land Office.
In Thai property law context: Foreign buyers often cannot attend Land Office on transfer day due to travel or work schedules. A properly executed power of attorney allows a Thai-qualified attorney-in-fact or trusted representative to sign on your behalf. Land Office scrutinises power of attorney format, notarisation, and scope of authority. A generic overseas POA may be rejected, delaying transfer and risking penalty clauses in your SPA.
Land Office and market practice: Property lawyers prepare Land Office compatible power of attorney as part of transfer service. If you use attorney-in-fact, the same lawyer often acts to avoid format rejection. Foreign principals may need embassy or notary steps depending on where they sign. Plan POA timing early because correction cycles add weeks. Never grant broad POA to an agent who is not independent legal counsel.
Where you see this term: Attorney-in-fact references appear in power of attorney exhibits to the SPA, Land Office transfer packets, and juristic person consent forms when the buyer cannot attend in person.
Common mistakes:
- Using a home-country POA template without Land Office format review
- Granting POA to the selling agent rather than independent lawyer
- Arriving at transfer day without confirmed POA acceptance
Why letter A terms appear together
Alien quota, assessed value, and attorney-in-fact are linked on almost every foreign condo transfer. Quota determines whether Land Office accepts your name. Assessed value determines tax counter fees. Attorney-in-fact determines whether you must fly to Bangkok on transfer day. Agents often discuss price first while these three terms decide whether registration succeeds.
Review letter B terms after letter A if you are structuring villa lease rights instead of condo freehold.
How letter A terms connect on transfer day
On a typical Bangkok condo resale, Land Office staff verify foreign quota status before accepting transfer. The fee counter calculates taxes using assessed value even when your SPA lists a lower price. If you cannot attend, your attorney-in-fact presents quota proof, FET documentation from letter F, and signed POA in one packet. Missing any element sends you back to the juristic person or bank while penalty clocks in your SPA may tick.
Read our condo buying guide for quota verification steps and transfer tax guide for tax base detail.
How to use letter A terms with your lawyer
Read summaries before SPA signing
Skim alien quota and assessed value sections so you understand lawyer redlines on your sale contract.
Request juristic quota letter
Use alien quota vocabulary when asking the juristic person for written foreign ownership confirmation.
Budget taxes on assessed value
Ask your lawyer for a pre-transfer estimate using government appraisal, not net price alone.
Plan power of attorney early
If you cannot attend Land Office, confirm attorney-in-fact format with counsel weeks before transfer day.
Align with lifestyle and visa plans
Property registration does not replace immigration status. Coordinate long-stay visa and banking separately.
Long-stay planning: Thailand lifestyle guide. Letter F remittance detail: letter F glossary terms.
Condo buyer checklist tied to letter A: Confirm foreign quota in writing, request transfer tax estimate using assessed value, and plan power of attorney with your lawyer before SPA signing. These three steps prevent most letter-A vocabulary disputes at Land Office.
Common glossary mistakes
Buyers misapply letter A alien quota, assessed value, and attorney-in-fact vocabulary when rushing reservation payments. Use this page to follow your lawyer memo, not to skip independent counsel.
- Reading only dictionary definition without context section on letter A alien quota, assessed value, and attorney-in-fact vocabulary
- Assuming US or UK term meaning matches Thai Land Office usage on transfer forms
- Paying deposit before verifying terms from this letter page with property lawyer
- Skipping linked letter pages when SPA references multiple vocabulary items
- Treating glossary as substitute for juristic person letter and title search
How to use this glossary letter
Named steps help you apply vocabulary during due diligence, not just memorise definitions.
Read term in context
Use summary plus Land Office practice sections, not dictionary definition alone.
Cross-check with lawyer memo
Match vocabulary to your SPA and due diligence report.
Verify quota and tax base
Letter terms often decide whether transfer succeeds at Land Office.
Browse linked letters
Continue to adjacent glossary pages referenced in your contract.
Book property coordination
Align visa, banking, and transfer timing with TVC if relocating.
Extended planning notes
Rules, fees, and embassy practices change. Verify against official sources within two weeks of travel or submission. TVC guidance reflects Bangkok team experience as of June 2026, not a substitute for legal advice on your specific facts.
Long-stay holders should cross-link this topic with Thailand lifestyle guide for visa category fit, TM30, 90-day reporting, and cost-of-living context.
- Confirm official embassy or immigration source before paying non-refundable fees
- Photograph passport stamps and set calendar reminders before expiry
- Keep digital copies of refusal letters, extension approvals, and financial proof
- Plan re-entry permits before leaving on single-entry extensions
- Ask TVC for case-specific checklist rather than relying on forum advice
Planning milestones
Use this timeline table alongside the named workflow steps above. Dates shift by embassy workload and your document quality.
| Phase | Action |
|---|---|
| Week 1 | Confirm eligibility, assigned post, and document checklist on official portals. |
| Week 2 | Complete affidavits, translations, and legalisation in the order the checklist requires. |
| Week 3 | Submit application with cross-checked names, dates, and financial proof. |
| After approval | File TDAC, register address, and set 90-day reporting reminders before long-stay life begins. |
Core document checklist
Most Thailand visa, property, and consultation cases ask for variations of these documents. Your TVC checklist may add category-specific items.
| Document | Note |
|---|---|
| Passport biodata page | Must match every form field including middle names and spacing. |
| Passport photos | Recent, white background, per embassy specifications. |
| Financial proof | Bank statements or pension letters meeting category thresholds. |
| Supporting affidavits | Embassy or notarised documents when required for your nationality pair. |
Compliance reminders for long-stay holders
Tourism advice forums often skip post-arrival duties. These reminders apply across most categories. Privilege and some LTR tiers simplify reporting but not TDAC or overstay rules.
- Complete TDAC before every arrival at tdac.immigration.go.th
- Ensure TM30 address registration within 24 hours of check-in
- File 90-day reports on schedule for long-stay categories
- Match daily activities to your visa stamp category
For TM30 detail see TM30 guide. For 90-day reporting see 90day.in.th.
Frequently asked questions
Q:Is alien quota the same as foreign quota?
Yes. Alien quota, foreign quota, and 49% cap refer to the same Condominium Act limit on foreign ownership of total sellable area per registered building.
Q:Can assessed value be challenged?
Appraisal disputes follow formal Revenue Department and Land Office processes. Your lawyer advises whether challenge is realistic before transfer day, not after taxes are paid.
Q:Must I attend Land Office personally?
Not always. A valid attorney-in-fact with Land Office accepted power of attorney may sign on your behalf. Many foreign buyers use their property lawyer for this role.
Q:Where do I see these terms?
Sale contracts, Land Office transfer forms, juristic person letters, bank FET instructions, and lawyer due diligence reports.
Q:Do these definitions replace legal advice?
No. This page explains vocabulary in context. Your transaction needs independent title search, contract review, and Land Office attendance.
Q:Which letter page should I read next?
Condo buyers often continue to letter B for business tax and letter F for FET form detail after reviewing quota and assessed value here.
Q:How does assessed value relate to transfer fee?
The 2% transfer fee typically applies to the tax base derived from assessed or declared value, whichever is higher. See our transfer tax guide for the full levy table.
Q:More glossary pages?
See the full A to Z index on the glossary hub page.