Yes, an LGU can change the real property tax assessment classification of a farm lot without first getting approval from the old HLURB or the present DHSUD, but only for tax assessment purposes and only if the change is supported by law and facts.

That is very different from converting agricultural land into residential, commercial, industrial, or subdivision use. A new tax declaration saying “residential” or “commercial” does not automatically mean the land has been legally converted, that farming rights have disappeared, or that the owner can already build and sell house-and-lot units. For those uses, other approvals may be required from the sanggunian, DAR, DHSUD, zoning office, or other agencies.

The key question is: Was the LGU merely assessing the property for real property tax, or was it trying to change the legal land use of the farm lot? The answer determines whether housing authority approval is needed, what documents should exist, and how the owner can challenge the change.

The Short Answer

For real property tax, the city or municipal assessor may classify, value, and assess land based on its actual use under the Local Government Code of 1991, Republic Act No. 7160.

So, if a parcel is no longer actually used as farmland and is now principally used for a house, warehouse, commercial yard, resort, poultry facility, parking area, or subdivision activity, the assessor may have a basis to revise the assessment classification.

But if the land is still genuinely used as a farm lot — planted, cultivated, grazed, irrigated, leased to a farmer, or otherwise principally devoted to agriculture — the owner may question a sudden reclassification to residential or commercial tax status.

The LGU cannot simply say, “The area is becoming residential, so your farm is now taxable as residential,” without a proper factual and legal basis.

Tax Classification Is Not the Same as Land Use Conversion

Many property owners get confused because government offices use similar words: classification, reclassification, conversion, zoning, and assessment. They do not mean the same thing.

Government action	What it means	Main office involved	Does it allow non-agricultural development?
Real property tax classification	Determines how the land is assessed for amilyar or real property tax	City, municipal, or provincial assessor	No. It is mainly for taxation.
Zoning or land use classification	States what uses are allowed under the CLUP and zoning ordinance	LGU planning/zoning office, sanggunian, province or DHSUD depending on LGU type	It may allow certain uses, but other permits may still be needed.
Agricultural land reclassification under Section 20 of RA 7160	LGU changes agricultural land to non-agricultural use through ordinance, within legal limits	Sangguniang bayan or panlungsod, with required hearings and review	It is a land use step, but not always enough by itself.
DAR land use conversion	DAR authorizes agricultural land to be used for non-agricultural purposes	Department of Agrarian Reform	Yes, when required and approved.
Subdivision, condominium, or housing project approval	Approval of development plans, registration, and license to sell	DHSUD or authorized LGU, depending on project and rules	Yes, for covered real estate projects after other prerequisites.

This distinction matters because a landowner may win one issue and still lose another.

For example, a property may be classified as agricultural for tax purposes but later be placed in a residential zone by a valid zoning ordinance. Or the assessor may classify a parcel as residential for tax purposes because a house was built on it, but that does not necessarily mean a full residential subdivision project is already lawful.

Legal Basis: Why the Assessor Looks at Actual Use

The main law is the Local Government Code of 1991, especially the provisions on real property taxation.

Section 215 classifies real property for assessment purposes as:

Residential
Agricultural
Commercial
Industrial
Mineral
Timberland
Special

Section 217 is especially important. It provides that real property shall be classified, valued, and assessed on the basis of its actual use, regardless of where it is located, whoever owns it, and whoever uses it.

“Actual use” means the purpose for which the property is principally or predominantly used. In ordinary terms, the assessor should look at what is really happening on the land, not only what the title says, what the owner calls it, or what a nearby subdivision developer plans to do in the future.

Examples of actual use

A farm lot may still be agricultural if it is:

Planted with rice, corn, coconut, sugarcane, vegetables, fruit trees, or other crops
Used for livestock grazing or animal raising
Used as a fishpond or inland fishery
Leased to a tenant, farm worker, or agricultural operator
Covered by irrigation, farm inputs, crop insurance, or agricultural support records
Registered or recognized by barangay, municipal agriculture office, or DAR records as agricultural land

A farm lot may be assessed differently if it is now principally used as:

A residence or compound
A commercial parking lot, depot, warehouse, resort, events place, or business yard
A factory, batching plant, or industrial facility
A subdivision sales site or developed residential project
A vacant but developed residential or commercial lot, depending on local facts and assessment rules

The issue is not the label alone. The issue is the dominant and provable use of the property.

Does the Assessor Need DHSUD or HLURB Approval Before Changing the Tax Declaration?

Usually, no.

The old Housing and Land Use Regulatory Board (HLURB) no longer operates in the same form. Under Republic Act No. 11201, the Department of Human Settlements and Urban Development Act, housing, human settlements, land use planning, and real estate development regulatory functions were reorganized under DHSUD, while adjudicatory functions were transferred to the Human Settlements Adjudication Commission (HSAC).

DHSUD is important for:

CLUP and zoning standards
Monitoring LGU compliance with land use plans and zoning ordinances
Subdivision and condominium development regulation
Housing and real estate project standards
Certain development permits, registrations, and licenses to sell

But the local assessor is the office that handles real property appraisal and assessment for tax purposes. A DHSUD approval is not normally a prerequisite before the assessor updates a tax declaration or assessment record.

However, this does not mean the assessor can act arbitrarily. The assessment must still comply with:

The Local Government Code
Applicable local tax ordinances
The approved schedule of market values
Department of Finance and BLGF rules
Due process requirements, including notice and appeal rights
Evidence of actual use

What RA 12001 Changed About Real Property Valuation

In 2024, Congress enacted Republic Act No. 12001, the Real Property Valuation and Assessment Reform Act. This law modernizes real property valuation in the Philippines by requiring more uniform valuation standards and strengthening the role of the Bureau of Local Government Finance under the Department of Finance.

RA 12001 is important because it affects how schedules of market values are prepared, reviewed, and updated. It aims to make real property valuation more consistent, transparent, and market-based.

But RA 12001 does not turn a tax declaration into a zoning approval, DAR conversion order, or subdivision permit. It also does not erase the basic distinction between tax assessment and land use authorization.

In practical terms, an owner may see a higher market value or a new assessment after a general revision. That increase may come from updated valuation standards, not necessarily from a legal conversion of the land.

When Housing Authority or DHSUD Approval Becomes Relevant

DHSUD approval or review becomes relevant when the issue is no longer just amilyar.

It may be needed when the property is involved in:

A residential subdivision project
A condominium project
A socialized or economic housing project
Sale of subdivision lots or house-and-lot packages
Development requiring a license to sell under Presidential Decree No. 957 or BP Blg. 220
CLUP or zoning ordinance review, depending on the LGU and applicable rules
Locational clearance and development permit processing

Under Executive Order No. 72, series of 1993, CLUP and zoning review functions are distributed depending on the type of LGU. Component city and municipal plans are generally reviewed through the province, while highly urbanized cities, independent component cities, provinces, and Metro Manila LGUs have national review or ratification rules historically involving HLURB, now carried forward through DHSUD functions under RA 11201.

So, if your concern is only: “Why did my tax declaration change from agricultural to residential?” DHSUD approval may not be required.

But if your concern is: “Can the LGU or developer treat my farm lot as residential land for subdivision development?” then you must check zoning, reclassification, DAR conversion, and DHSUD or LGU development approvals.

LGU Reclassification of Agricultural Land Under Section 20 of the Local Government Code

Section 20 of the Local Government Code allows a city or municipality, through an ordinance and after public hearings, to authorize the reclassification of agricultural lands in certain cases.

This is allowed when:

The land has ceased to be economically feasible and sound for agricultural purposes, as determined by the Department of Agriculture; or
The land has substantially greater economic value for residential, commercial, or industrial purposes, as determined by the sanggunian.

But there are percentage limits based on the LGU:

LGU category	Maximum agricultural land area that may be reclassified
Highly urbanized cities and independent component cities	15%
Component cities and first to third class municipalities	10%
Fourth to sixth class municipalities	5%

These limits are based on the total agricultural land area at the time of the passage of the ordinance.

The LGU must also observe public hearing requirements and other applicable national policies. A mere notation in the tax declaration is not the same as a valid Section 20 reclassification ordinance.

DAR Conversion Is a Separate Requirement

Even if an LGU has reclassified land under its zoning or land use powers, DAR conversion may still be required if the land is agricultural and covered by agrarian reform laws.

Under Republic Act No. 6657, the Comprehensive Agrarian Reform Law of 1988, as amended, DAR has authority over conversion of agricultural lands to non-agricultural uses in covered situations. Section 65 allows DAR to authorize conversion when legal conditions are met, such as when the land ceases to be economically feasible for agriculture or the locality becomes urbanized and the land has greater economic value for another use.

This is why developers and landowners often need several layers of documents:

Zoning certificate or locational clearance
LGU reclassification ordinance, if applicable
DAR conversion order, if required
Environmental compliance documents, if applicable
Development permit
DHSUD registration or license to sell for covered projects

Skipping DAR conversion is a common and serious mistake. A landowner may have a residential tax declaration and even a favorable zoning certificate, but still face DAR issues if the property remains legally agricultural under agrarian reform rules.

Tax Declarations Are Useful, But They Are Not Conclusive

A tax declaration is important. It helps identify the property for assessment, shows who is declaring and paying taxes, and may support possession or ownership claims together with other evidence.

But it is not a Torrens title. It is not a DAR conversion order. It is not a zoning ordinance. It is not a subdivision approval.

The Supreme Court has repeatedly treated tax declarations as relevant but not conclusive. In Jose v. Garilao, G.R. No. 147146, July 29, 2005, the Court explained that land classification in tax declarations is not final or conclusive, and that tax declarations are not the sole basis for determining land classification in agrarian and land use questions.

For ordinary owners, the practical lesson is simple: do not rely on the tax declaration alone when buying, selling, developing, inheriting, or disputing a farm lot.

How to Check Whether the LGU’s Tax Reclassification Is Proper

If your farm lot was suddenly assessed as residential, commercial, or industrial, do not start by arguing emotionally at the counter. Start by collecting the records.

1. Get a copy of the new and old tax declarations

Ask the assessor’s office for certified copies of:

The old tax declaration
The new tax declaration
Field appraisal and assessment sheet, often called FAAS
Notice of assessment or reassessment
Computation of market value and assessed value
Classification code or property use code used by the assessor

Compare the old and new entries. Look for changes in:

Classification
Actual use
Market value
Assessment level
Area
Boundaries
Improvements
Name of declarant
Effectivity year

Sometimes the problem is not classification. It may be a wrong area, duplicate declaration, erroneous improvement, or updated market value.

2. Ask the assessor for the factual basis

Politely request the basis for the change. The assessor may say it was due to:

General revision of assessments
Updated schedule of market values
Field inspection
Building or improvement found on the lot
Zoning information
Subdivision or consolidation plan
Transfer documents submitted to the Registry of Deeds
Discovery that the property is no longer agricultural in actual use

Ask for the specific document or inspection report. Do not accept a vague answer if the tax increase is substantial.

3. Verify actual use on the ground

If the property is still farmed, prepare evidence such as:

Recent geo-tagged photos and videos
Barangay certification of agricultural use
Certification from the municipal or city agriculture office
Farm input receipts, seed receipts, fertilizer receipts, irrigation records
Crop insurance documents
Lease or tenancy documents
Affidavits of adjoining owners, farm workers, or tenants
DAR records, if any
Photos showing planted crops, trees, livestock, fishponds, irrigation, or farm structures
Google Maps or satellite images, if useful

A strong protest is usually evidence-based. The assessor, treasurer, and assessment boards will focus on documents and facts.

4. Check the zoning separately

Go to the city or municipal planning and development office or zoning office and request:

Zoning certificate
Excerpt from the zoning map
Applicable zoning ordinance
CLUP reference
Any certificate of locational viability, locational clearance, or certificate of exception
Any Section 20 reclassification ordinance affecting the property

This helps you determine whether the LGU merely changed the tax assessment or whether there was a broader land use action.

5. Check DAR status if the land is agricultural

If the land is agricultural, especially if there are tenants, farmer-beneficiaries, CLOAs, EPs, or past DAR notices, check with the municipal or provincial DAR office.

Ask whether the property is:

Covered by CARP
Subject of a notice of coverage
Covered by emancipation patents or CLOAs
Subject of retention, exemption, exclusion, or conversion proceedings
Already covered by a DAR conversion order

This is especially important before selling, developing, fencing, ejecting occupants, or signing a joint venture.

How to Challenge an Incorrect Tax Reclassification

There are two common remedies under the Local Government Code: an assessment appeal and payment under protest. They are related, but not exactly the same.

Option 1: Appeal the assessment to the Local Board of Assessment Appeals

If you received a written notice of assessment and disagree with the new classification, market value, or assessed value, Section 226 of the Local Government Code allows an appeal to the Local Board of Assessment Appeals (LBAA).

The usual deadline is 60 days from receipt of the written notice of assessment.

The appeal should generally include:

Verified petition or appeal form, depending on the LGU
Copy of the notice of assessment
Old and new tax declarations
Title or proof of legal interest
Evidence of actual agricultural use
Written explanation of why the assessment is wrong
Special power of attorney, if filed by a representative
Filing fee, if required by the local board

The LBAA is usually located at or connected with the provincial, city, or municipal government structure, but procedures vary by LGU. Some highly urbanized cities have their own board process and forms.

Option 2: Pay under protest when the tax is already being collected

If the disputed real property tax is already due and being collected, Section 252 of the Local Government Code requires a taxpayer to first pay the tax before a protest is entertained.

This is called payment under protest.

The usual steps are:

Pay the real property tax.
Make sure the receipt is annotated with words like “paid under protest.”
File a written protest with the provincial, city, or municipal treasurer within 30 days from payment.
Attach the tax receipt, tax bill, tax declarations, assessment notice, and evidence.
Wait for the treasurer’s action.
If denied or unresolved within the legal period, elevate the matter to the proper assessment appeal body within the required period.

Do not ignore the tax bill while arguing with the assessor. Unpaid real property tax can incur interest and may eventually lead to collection remedies, including levy and auction.

Under Section 255 of the Local Government Code, delinquent real property tax earns interest at 2% per month or fraction of a month, subject to the statutory cap. Local treasurers enforce this strictly.

Documents You Should Prepare

Document	Why it matters	Where to get it
Transfer Certificate of Title or Original Certificate of Title	Shows registered ownership and technical description	Registry of Deeds or owner’s copy
Old and new tax declarations	Shows the change in classification or value	Assessor’s office
Real property tax receipts and bills	Shows payments, delinquencies, and computation	Treasurer’s office
Notice of assessment or reassessment	Triggers appeal deadlines	Assessor’s office
FAAS or field appraisal record	Shows how the assessor classified and valued the land	Assessor’s office
Zoning certificate	Shows allowed land use under zoning ordinance	CPDO/MPDO or zoning office
Section 20 reclassification ordinance, if any	Shows formal LGU land use reclassification	Sanggunian secretary
DAR certification or conversion order, if any	Shows agrarian status or approved conversion	DAR municipal/provincial office
Barangay and agriculture office certifications	Supports actual farm use	Barangay hall and agriculture office
Photos, receipts, affidavits, farm records	Proves actual use	Owner, farmer, tenant, or operator

Practical Timelines

Action	Typical timeline or deadline
Request certified tax declaration or RPT records	Same day to a few working days, depending on LGU
Request FAAS or assessment basis	A few days to several weeks, depending on records access
Appeal new assessment to LBAA	Within 60 days from receipt of written notice of assessment
Pay under protest	Protest must usually be filed within 30 days from payment
Treasurer action on protest	Often expected within the statutory period, but delays happen
LBAA proceedings	Several months to more than a year in busy LGUs
Appeal from LBAA to CBAA	Generally within 30 days from receipt of LBAA decision
Further appeal from CBAA	May go to the Court of Tax Appeals under RA 9282 procedures

In real life, delays usually happen because records are incomplete, the owner is abroad, the assessor requires updated title documents, the property has overlapping claims, or there are unresolved DAR or zoning issues.

Special Concerns for OFWs and Foreigners

If the owner is abroad, the LGU will usually require a representative to present a Special Power of Attorney (SPA). If signed outside the Philippines, the SPA may need to be acknowledged before a Philippine consulate or apostilled, depending on the country where it was signed and the receiving office’s requirements.

Foreigners should be extra careful. A change in tax declaration does not cure foreign land ownership restrictions.

Under Article XII, Section 7 of the 1987 Philippine Constitution, private land generally cannot be transferred to foreigners except in cases such as hereditary succession. Foreign investors may lease land under the Investors’ Lease Act framework, now liberalized by RA 12252, but lease rights are not the same as ownership.

For foreigners dealing with a Philippine farm lot, always separate these issues:

Who owns the land?
Who is declaring the land for tax purposes?
Who is paying the real property tax?
What is the actual use?
What is the zoning?
Is DAR involved?
Is there a lease, usufruct, corporation, inheritance, or nominee arrangement?

A foreigner paying amilyar does not automatically become the lawful landowner.

Common Scenarios

The farm is still planted, but the tax declaration changed to residential

This is contestable if the actual use is still agricultural. Gather farm-use evidence and ask the assessor for the inspection report and legal basis. If there is a written notice of assessment, watch the 60-day appeal period.

The land is vacant and surrounded by subdivisions

Vacancy alone does not always mean residential actual use. But the assessor may rely on zoning, market values, or local assessment rules. Check whether the change was classification, valuation, or both.

The owner built a family house on part of the farm

The assessor may split the assessment or classify the residential portion differently, depending on local practice and available survey or inspection records. Ask whether only the house and its immediate area can be treated as residential while the remaining cultivated area stays agricultural.

A developer says the property is now residential because the tax declaration says so

That is incomplete. Ask for the zoning certificate, reclassification ordinance if needed, DAR conversion order if required, development permit, and DHSUD license to sell if lots or units are being marketed.

The LGU passed a zoning ordinance making the area residential

That may affect land use planning, but it does not automatically answer the real property tax issue or DAR conversion issue. A zoning change, tax assessment, and DAR conversion can overlap, but they are separate legal steps.

The assessor increased the value but did not change the classification

This may be a valuation issue, not a reclassification issue. Review the schedule of market values, assessment level, and RA 12001-related updates. You may still question an erroneous or excessive assessment through the proper remedy.

Frequently Asked Questions

Can the assessor change my farm lot from agricultural to residential without DHSUD approval?

Yes, for real property tax assessment purposes, DHSUD approval is not usually required. But the assessor must have a legal and factual basis, especially evidence of actual use or applicable assessment rules. If the land is still actually used for farming, you may challenge the change.

Does a residential tax declaration mean my agricultural land is already converted?

No. A residential tax declaration does not automatically convert agricultural land to residential use. Legal conversion or development may still require LGU zoning compliance, a valid reclassification ordinance, DAR conversion approval, and other permits.

Can I build a subdivision if my tax declaration says residential?

Not by that document alone. For a subdivision or housing project, you may need zoning clearance, development permit, DAR conversion if applicable, environmental documents, DHSUD registration, and a license to sell under PD 957 or BP 220 rules.

What is the strongest evidence that my land is still agricultural?

The strongest evidence usually includes actual farm photos, barangay certification, agriculture office certification, crop or livestock records, irrigation records, lease or tenancy documents, farm input receipts, and affidavits from people who personally know the land’s use.

What should I do first if my real property tax suddenly increased?

Get the old and new tax declarations, the FAAS, the notice of assessment, and the computation from the assessor’s office. Determine whether the increase came from classification, market value, area correction, added improvements, or penalties.

How long do I have to appeal a new assessment?

If you received a written notice of assessment, the usual period to appeal to the Local Board of Assessment Appeals is 60 days from receipt. Do not wait for the end of the year or for the next billing cycle.

Do I need to pay the tax before protesting?

For payment-under-protest cases under Section 252 of the Local Government Code, yes. The taxpayer must first pay the tax, have the receipt marked as paid under protest, and file a written protest within the required period.

Can a tax declaration prove ownership?

A tax declaration can help show possession or a claim of ownership, especially when supported by tax payments and other documents. But it is not conclusive proof of ownership and does not replace a Torrens title.

Can an LGU reclassify all farms in an area as residential for more tax revenue?

An LGU may update values and classifications under real property tax laws, but it cannot ignore actual use, due process, assessment rules, and appeal rights. For land use reclassification under Section 20 of the Local Government Code, the sanggunian must follow ordinance, hearing, and percentage-limit requirements.

What if I am abroad and cannot personally file the protest?

You can usually authorize a trusted representative through a Special Power of Attorney. If executed abroad, the SPA may need consular acknowledgment or apostille, depending on where it was signed and what the LGU requires.

Key Takeaways

An LGU assessor may revise a farm lot’s tax classification without DHSUD or old HLURB approval if the change is only for real property tax assessment and is legally supported.
Real property tax classification is based mainly on actual use under the Local Government Code.
A tax declaration does not equal land conversion, zoning approval, DAR conversion, or subdivision approval.
DHSUD becomes relevant for CLUP/zoning standards, subdivision and condominium regulation, housing projects, and licenses to sell.
DAR conversion may still be required before agricultural land can be lawfully used for non-agricultural purposes.
If your farm is still actually used for agriculture, gather evidence and request the assessor’s basis for the change.
Watch the deadlines: generally 60 days to appeal an assessment and 30 days from payment to file a payment-under-protest remedy.
Foreigners and OFWs should pay special attention to SPA authentication, land ownership restrictions, and the difference between paying taxes and owning land.