Short answer: a restart has three costs, and almost everyone budgets one. There is the work remaining, which is the obvious part. There is the damage done by standing open, which is invisible until someone chips the concrete. And there is the paperwork restart — because under PD 1096 Section 305, a building permit becomes null and void once work has been suspended for 120 days. Four months. The tool below prices all three.
Section 305 of the National Building Code: a building permit "shall expire and become null and void if the building or work authorized therein is not commenced within a period of one year from the date of such permit, or if the building or work so authorized is suspended or abandoned at any time after it has been commenced, for a period of 120 days." If your house has been standing untouched since last year, you do not have a live permit. You have a lapsed one.
The instinct is to treat a stalled house as a paused one. The frame is up, the roof is on, so surely finishing is just the remaining trades at today's prices.
That reasoning fails in three places at once. Materials moved while nothing happened — our material price tracker exists because they move more than people expect. The structure aged badly, and unlike a finished house it aged with its reinforcement exposed. And the project lost its paperwork, its crew, its supplier terms and usually its original bill of materials.
None of those are catastrophic on their own. Together they are the difference between an estimate that holds and one that stalls the house a second time.
Tell it the size, the finish level you are aiming for and which phases are already done. It values the work in place, prices what remains, then adds the two costs owners routinely miss — deterioration and escalation — and flags the permit position. Planning figures, not a quotation.
This is the part owners can estimate themselves, and the method is simple as long as you resist estimating in trades and estimate in value instead.
Take the cost of the completed house at the finish level you actually want, then subtract the value of the phases already done. The weights below are the component split published in our house construction cost guide, and they are the same numbers the calculator uses.
| Phase | Share of build | What it usually means for a stalled house |
|---|---|---|
| Structural works | 28% | Nearly always done — this is why finishing usually beats rebuilding |
| Tiles & finishes | 13% | Nearly always the first thing cut when money ran short |
| Masonry & waterproofing | 12% | Often half done, and the half that is done may be saturated |
| Overhead & contingency | 11% | Spent early, so rarely available to draw on at restart |
| Doors & windows | 10% | The gate item — until these go in, everything inside stays exposed |
| Roofing system | 9% | The single most consequential yes or no on this whole list |
| Electrical works | 7% | Conduits may be cast in; check they are not crushed or full of water |
| Plumbing works | 6% | Below-slab lines are the expensive ones to discover are wrong |
| Painting | 4% | Last, and cannot start until the walls have dried out |
One warning about this table. A phase that is partly done is not worth half its weight if the remaining half is now harder to do — and on a restart it usually is, because the easy access has gone.
This is the layer that does not appear in anyone's spreadsheet, because it is not work you can see waiting to be done. It is value quietly leaving the structure.
Exposed Starter Bars — The Expensive One
Every stalled build has them: vertical bars projecting out of column heads, waiting for a storey that never came. Left in the weather they corrode, and corroding steel expands.
That expansion is the damage. It cracks and spalls the concrete around the bar, at exactly the location — the column head — where the frame most needs to be intact. The loss is never the price of the bar. It is the repair of the member it is embedded in. Wrapping projecting bars costs almost nothing and is the single highest-return thing an owner can do to a build that is about to pause.
Saturated Blockwork and Trapped Water
Concrete hollow blocks standing through wet seasons without a roof hold water, and that water comes back out through whatever finish is applied later. Plaster applied to a wall that has not dried out is the most common cause of a repaint within the first year.
Slab drainage is the related problem. Floor drains and downpipe outlets on an unfinished slab silt up, so water ponds where it was never meant to and finds its way into the storey below. Both are cheap to prevent and tedious to fix. See our waterproofing cost guide for what the remediation runs to.
Formwork, Scaffolding and Everything Left Behind
Timber formwork and bamboo scaffolding left standing through a rainy season is normally a write-off, and it was already paid for. Stored cement is gone within months. Anything portable that was left on an unsecured site is usually gone too.
None of these are large individually. Together they are typically the first unpleasant surprise of a restart, because they are discovered on day one.
As a planning allowance the calculator uses roughly 1% per month of the value of work in place for a fully exposed structure, half that for one that is roofed but open, and a quarter for one roofed and closed — each capped, because deterioration slows once the easy damage is done. These are judgement ranges from completion work we have priced, not survey data. The real number for your house comes from someone chipping test areas and looking at the steel.
The legal position is clearer than most owners expect, and worse.
PD 1096 Section 305 is quoted in full at the top of this page: a permit expires and becomes null and void if work is not commenced within one year, or if work is suspended or abandoned after commencement for 120 days. There is no grace period written into the clause and no requirement that anyone notify you.
There is a second trap, and it catches builds that stopped before the permit was even issued. Section 304 of the IRR lets you excavate while the application is still being processed, but for an excavation of more than 50 cubic metres and more than 2 metres deep it requires a cash bond until the building permit is issued — ₱50,000 for the first 50 cubic metres plus ₱300 for every cubic metre beyond. That excavation "shall not be left open without any work being done in the site for more than one hundred twenty (120) days, otherwise the cash bond shall be forfeited" to cover backfilling. A hole in the ground has a clock on it too.
Practically, restarting means re-filing. Expect the building official to compare what is standing against the approved drawings, which on stalled projects have often diverged — and the divergence is precisely what gets looked at. Our building permit guide covers the process and the fee calculator the cost. You will need an occupancy permit at the end regardless.
In our experience the cause is rarely a single disaster. It is a budget built on a per-square-metre figure with no contingency, meeting a scope that grew, meeting a payment schedule tied to dates rather than to verified physical progress.
That last one matters most on a restart. If money is released against a calendar, a project that falls behind is also a project that has been overpaid — and an overpaid contractor has no commercial reason to come back. Releasing against measured accomplishment, with retention held back, is the mechanism that keeps a build finishing. It is the same discipline our progress billing calculator tests.
The other prevention is honest sizing at the start. If your budget only stretches to a smaller house built properly, our budget-to-size calculator will tell you before the foundations go in rather than after.
The permit provisions are quoted from PD 1096, the National Building Code of the Philippines — Section 305 on validity of building permits, and Section 304 of the IRR on excavation cash bonds. The designer's fee provision is Section 7.8 of the 2010 Standards of Professional Practice, approved 27 July 2010 as the Supplemental IRR of RA 9266. Per-square-metre cost bands and the phase weights are the 2026 figures published in our house construction cost guide. Deterioration allowances and the 5% annual escalation assumption are AEDO planning ranges, clearly labelled as such — they are for judgement, not quotation, and they move with exposure, location and how the build was left.
Does my building permit expire if construction stops?
Yes. Section 305 of PD 1096, the National Building Code of the Philippines, states that a building permit shall expire and become null and void if the work authorised is not commenced within one year from the date of the permit, or if the work is suspended or abandoned at any time after it has been commenced for a period of 120 days. Four months of inactivity is enough. Most owners of stalled houses discover this only when they try to restart, and the practical effect is that resuming work means going back to the building official rather than simply calling the crew back.
How do I estimate the cost to finish an unfinished house?
Work in three layers rather than one. First, the remaining works: take the total cost of the house at your target finish level, subtract the value of the phases already complete, and what is left is the base cost. Second, the damage: a structure that has stood open loses value through rebar corrosion, saturated blockwork, lost formwork and vegetation, and that has to be repaired before new work sits on top of it. Third, the restart costs: price escalation on materials since work stopped, a fresh structural assessment of what was built, and the permit and documentation work. Owners who budget only the first layer are the ones who stall a second time.
How much damage does an unfinished house suffer while it stands?
It depends almost entirely on whether the roof went on before work stopped. A structure with a roof and closed openings deteriorates slowly. A structure open to the weather deteriorates quickly, and the mechanism is corrosion at exposed starter bars, where rusting steel expands and spalls the concrete around it. Concrete hollow blocks that sit saturated through a wet season carry that moisture into finishes applied later. Timber formwork and scaffolding left in place is usually a total loss. As a planning allowance we assume roughly one percent per month of the value of work already in place for a fully exposed structure, and a quarter of that for one that is roofed and closed.
Is it cheaper to finish an unfinished house or demolish and rebuild?
Usually finishing is cheaper, because the structural frame is the single most expensive part of a house at roughly 28 percent of the build, and that is normally the part already in place. Rebuilding means paying for it twice and paying to demolish it once. Finishing stops being the better option in three situations: where the structure was built without approved plans and cannot be certified, where the existing frame will not carry what you now want to build on it, and where the deterioration is deep enough that repair approaches the cost of replacement. All three are questions a structural assessment answers and a visual inspection does not.
What should I do before restarting a stalled build?
Five things, in order. Get a structural assessment of what is actually standing, including the condition of exposed reinforcement. Verify what was built against the approved drawings, because on stalled projects these often diverge and the divergence is what the building official will look for. Re-measure the remaining quantities rather than reusing the original bill of materials, since prices and scope have both moved. Sort the permit, which after 120 days of suspension has lapsed under PD 1096 Section 305. And decide the contract type for the remaining works before you appoint anyone, because a partly built house is exactly the situation where a lump sum contract is hardest to price fairly.
Does a long pause affect my designer's fee too?
It can. Section 7.8 of the 2010 Standards of Professional Practice, the Supplemental IRR of RA 9266, provides that where portions of a building are erected at different periods, charges for construction phase services are adjusted proportionately, and that when the suspension of construction exceeds a period of six months, the fee for the remaining works shall be doubled. If your designer is engaged for construction phase services rather than drawings alone, a long pause has a cost on that side as well. It is worth raising with them deliberately rather than letting the project drift past the six month mark.
Statutes, codes, official tools and references used or referred to in this article, linked to their source. Links open in a new tab.
Prices, cost bands and rate figures in this article are AEDO Construction's own market and practice figures for Philippine work unless a source is named beside them. Code and statute references above link to the primary text.
A site visit, a measured survey of what is standing, inspection of exposed reinforcement, and a written opinion on what is sound, what needs repair and what it will take to finish. On a stalled house it is the only number that makes the other numbers trustworthy.
