What a rebuild costs

You own a landed house. You are asking one question: what is the number. There isn't a single one — there is a range, and the range is wide because the people who publish it are contractors, architects and brokers pricing their own next job, not a regulator setting a tariff. This page puts every published figure on the table, dated, with the sources named, and shows you where they agree and where they flatly do not.

The mechanics: when a rebuild is a rebuild, not an addition

URA draws the line by arithmetic, not by intent. A proposal to your landed house stays an addition-and-alteration (A&A) only if it adds no more than 50% to the approved gross floor area, replaces no more than 50% of the approved external walls, and changes structure — new columns, beams, rebuilt floor slabs — on no more than 50% of the existing floor area. You can replace the entire roof without tripping this test, as long as you don't add a storey. Cross any of those thresholds and the application is no longer A&A — it is reconstruction, assessed on its own track, whether or not you think of it as a "rebuild."

URA also treats a proposal as reconstruction, not A&A, if it increases the number of storeys — including replacing a roof in a way that effectively adds one — or changes the housing form, for example turning a semi-detached house into a bungalow. This is a separate trigger from the 50% tests above; either one alone reclassifies the project.

A rebuild is lodged by a Qualified Person — a registered architect or engineer — with a proposal plan, a sketch plan and a declaration of compliance. The authorisation URA grants is valid for two years from the acknowledgement letter, extendable up to two more times before you'd need to lodge fresh. That clock is worth knowing before you commit to an 18–36 month build: URA's paper approval and your actual construction timeline are two different things, and the paper one runs out first if the site stalls.

Eligibility: what you're actually allowed to build, and who can decide to build it

Landed housing sits inside a three-dimensional envelope set by URA — 2 storeys (12m) or 3 storeys (15.5m), whichever is lower against the Master Plan designation for that plot, effective for landed housing since 11 May 2015. An attic can sit inside the envelope; a roof terrace on an attic must stay at least 3m below the envelope's top. If your existing house already exceeds the permissible envelope — common on older plots built to looser rules — a new A&A must not push the bulk out further; URA assesses these on their merits so the outcome is not worse than what's there now.

Minimum plot size is a separate constraint from the envelope, and it decides what housing form you're even allowed to rebuild into: 80 sq m for an intermediate or corner Terrace-II lot, 150 sq m for Terrace-I intermediate, 200 sq m for semi-detached and corner Terrace-I, 400 sq m for detached, 1,400 sq m for a Good Class Bungalow. Site coverage caps apply only to detached houses (40% sub-control, 50% overall) and GCBs (35%/45%); terrace and semi-detached types carry no site coverage cap in URA's table. A detached house's front setback is 7.5m, side and rear 2m.

One eligibility fact is easy to miss if your landed home sits inside a gated cluster or townhouse scheme with condominium status: you may not be able to decide this alone. A strata landed owner cannot unilaterally demolish and rebuild the way a standalone landed owner can — the land is common property or a strata lot within one shared title, and any external or structural change needs the Management Corporation's written consent before BCA or URA will accept a submission at all. Full site redevelopment there runs through the collective-sale mechanism, needing a majority of owners by both count and share value. If that's your situation, this page's numbers still apply to the build itself, but the decision to build is not yours alone to make.

Citizenship status: who can even hold the land

A Singapore Citizen owning landed housing in their own name faces no Residential Property Act restriction on the land itself. A Singapore PR does: landed housing (outside condominium-status strata schemes) needs Land Dealings Approval Unit approval, generally requiring PR status of at least five years plus a discretionary "exceptional economic contribution" test — approval is rarely granted, and the bar rises further for a bare, vacant plot rather than a built house, where LDAU applications are reported typically unfavourable and applicants are steered toward buying built-up property instead.

A foreigner faces the same LDAU regime as a PR without the five-year residency to even qualify for consideration — landed housing sits outside their reach in practice, Sentosa Cove aside. The Free Trade Agreement carve-out most people have heard of — US, Switzerland, Liechtenstein, Norway and Iceland nationals, plus EFTA PRs, taxed as Singapore Citizens — is a stamp-duty rule only. It does not touch the Residential Property Act: an FTA national buying landed housing still needs LDAU approval on the same PR-of-five-years-plus test as any other foreigner. A US green-card holder who isn't a US national gets none of this; the FTA treatment follows nationality, not residence. And a US citizen who also holds Singapore PR status is charged Additional Buyer's Stamp Duty at the Singapore Citizen rate specifically — a narrower, cleaner benefit than the general FTA parity headline suggests.

Practically: if you're reading this page as a landed HOLDER weighing a rebuild, you almost certainly already cleared this gate to own the plot. Where it resurfaces is if you're adding a spouse or family member to the title, or restructuring ownership before or after the build — a PR or foreign name going onto a landed title triggers the same approval question as a fresh purchase would.

Taxes: what the rebuild itself does and doesn't change

A rebuild on land you already own doesn't trigger Buyer's Stamp Duty or Additional Buyer's Stamp Duty — those attach to acquiring the property, not to building on it. If your rebuild plan starts with buying the plot, BSD on the residential schedule runs 1% on the first $180,000, 2% on the next $180,000, 3% on the next $640,000, 4% on the next $500,000, 5% on the next $1,500,000, and 6% on anything above $3,000,000 — payable within 14 days of the contract, in cash or CPF Ordinary Account. ABSD, if it applies to your buyer profile, sits on top and follows the citizenship schedule above.

Demolition itself has a filing duty most owners don't expect: you must notify IRAS within 15 days of demolishing a building, or any part of one. Miss it and the fine runs up to S$5,000 plus interest on the tax, on top of whatever Annual Value IRAS assesses on the cleared land in the meantime. Once demolished, the site's Annual Value is set at 5% of the estimated freehold market value of the land, taxed at the non-residential rate of 10% — a materially different bill than the owner-occupier residential rate you were paying on the house that stood there.

There is a relief, and it's worth claiming deliberately rather than discovering by accident. IRAS grants owner-occupier property tax rates on a land parcel under construction for a single owner-occupied house, for up to 2 years, where the land parcel's Annual Value sits below S$108,625 — running from the later of the land assessment date or the date building plans are submitted, to the earlier of TOP/CSC or the 2-year limit. Two conditions bind it: the finished house must then be owner-occupied for at least a year from TOP or CSC, and you (or your spouse) can't be claiming owner-occupier rates on another property during the remission window without asking IRAS to withdraw it there first.

Owner-occupier rates only ever apply to one property. Once the rebuild is done and you're back living in it, that's your one; a second home you also occupy, or anything you let out — including the rebuilt house itself if you decide to rent it rather than move back in — is taxed at the higher non-owner-occupier residential schedule, and rental income itself is assessable income under ordinary IRAS rules, not a separate rebuild-specific tax. If your exit plan is to sell rather than hold, Seller's Stamp Duty reaches a residential sale within 4 years of acquisition of the underlying land — 16% in year 1, tapering to 4% in year 4, nil after — a schedule that runs from when you acquired the land, not from when the new house completed.

Borrowing: land loan, then construction loan, then home loan

A rebuild is financed in stages, not as one loan. A land loan — if you're still paying one down, or buying the plot fresh — is capped by banks at roughly 55% LTV, well below the 75% ceiling on a completed home; land and construction facilities are assessed together against the same 55% TDSR ceiling from day one, and CPF use is restricted until a completed home actually stands on the land.

The construction loan itself is drawn in stages against certified progress — you pay interest only on what's actually been disbursed, not the full facility — with LTV of up to 75% measured against the bank's valuation of the completed home (land plus building), any outstanding land loan deducted first. It converts to an ordinary home loan once TOP is issued. One broker's worked example on a S$5,000,000 terrace plot at 55% LTV: a S$2,750,000 land loan needing about S$2,250,000 cash plus roughly S$240,000 BSD, then a construction loan disbursing progressively at an illustrative 4% p.a. — about S$1,000 a month on S$300,000 drawn, rising to S$5,000 a month once S$1,500,000 is fully drawn.

A separate market figure puts the construction-loan quantum at up to 75% of total rebuild cost, the remaining 25% in cash, at a rate above a standard mortgage until conversion post-TOP. Maximum loan tenure is 35 years for non-HDB property, and MAS's tenure-plus-age rule still applies: the loan tenure plus your age at application cannot exceed 65 without tripping the lower, long-tenure LTV band. TDSR is assessed at MAS's 4% floor rate for residential lending, not your bank's current quoted rate — whichever is higher governs what income you need to show.

One mortgage-broker guide flags something worth planning around before you get a valuation back: banks value an older home slated for demolition conservatively, which can shrink the loan quantum available against the land during the rebuild itself — the security the bank is really lending against, in year one, is largely the land, not the house you're about to knock down. And while the site is cleared and the new structure is being built, you're carrying a live mortgage with nothing insurable standing on it in the interim; landed owners typically hold private mortgage-reducing cover (not the HDB-only Home Protection Scheme) through this stretch, one illustration pricing it at roughly S$300–600 a year on a S$500,000 loan at age 35.

What it actually costs: the number, and where sources disagree

Construction cost per square foot of built-up area — excluding land, authority fees, consultants and interior design — is reported at roughly S$270–320 psf basic, S$320–400 mid-range, S$400–550 luxury by one builder; a contractor's 2026 psf table by house type and finish gives S$280–330 (mid-spec terrace) up to S$800–1,200+ (luxury GCB), with A&A work specifically priced lower, at S$200–280 psf. These are contractor quotes, not a fixed tariff — treat them as a starting range to pressure-test against your own tender, not a number to budget to the dollar.

• Construction-only totals by house type, one architecture firm's figures:
• Intermediate terrace: S$800,000–1.5m
• Semi-detached: S$1.5m–3m
• Detached bungalow: S$2m–5m+
• Good Class Bungalow: S$5m+

A second builder's total-project figure for a typical two- to three-storey terrace lands at S$1.4m–1.8m, or S$1.5m–2m or more once every cost line is included, with construction alone running about S$400 psf as a benchmark and a budget split roughly: main construction 55–70%, M&E and finishes 10–20%, professional fees 8–12%, external works 5–15%, demolition and submissions 2–5%, contingency 10–15%, plus 9% GST on fees and build. These two builders' totals for the same house type sit close to each other; where they and the architect's figures above diverge is mostly on what's included, not on what a terrace rebuild costs to physically build.

Demolition and disposal alone is quoted differently by every source that publishes a number: S$30,000–60,000 standard (S$30,000–80,000 premium) by one firm, S$40,000–120,000 by an architect, S$15,000–50,000 by a builder. The three do not agree, and none of them is IRAS or BCA — get a site-specific demolition quote rather than budgeting the midpoint of three commercial estimates. [⚠ rebuild.cost.demolition_three_sources: sources differ; awaiting a ruling]

Professional fees stack on top of construction: architectural fees 8–15% of construction value, structural engineering 2–4%, M&E engineering 1–3%, plus GST, by one architect's figures; a contractor's separate figures put Qualified Person fees at 6–9% of contract value, independent quantity surveyor 1–3%, submission fees S$2,000–8,000, and a defect-rectification fund of 5% of contract value held for 12 months after TOP. Recommended contingency across both sources: 10–15% of construction cost.

You will be living somewhere else while this happens, and that cost is easy to leave out of a budget built around construction quotes alone. One source prices temporary housing at S$3,000–5,000 a month for 12–18 months; another puts the whole-project figure at S$50,000–150,000 or more. Those two don't reconcile cleanly because they're measuring different things — a monthly rent versus a total displacement budget — but both point to a six-figure line item that has nothing to do with the building itself.

A major addition-and-alteration, rather than a full rebuild, is reported able to reach 60–80% of a full rebuild's cost — without the benefit of a genuinely clean structure at the end of it. That framing matters for the decision this page exists to inform: on some sites, the A&A route isn't meaningfully cheaper than starting over, once you account for what you don't get (a new structural warranty, a clean slate on services and layout) for that 60–80%.

Timeline estimates disagree as sharply as cost estimates, and for the same reason — different sources define the start and end points differently. One architecture firm's total figure runs 24–38 months from first engagement to move-in (design and documentation 6–9 months, then construction 12–18 months for a terrace or 18–30 for something larger); a builder reports 12–24 months; a property adviser reports 18–28 months against 8–14 months for a major A&A. Budget on the longer end and treat anything faster as a pleasant surprise, not a plan.

A brokerage's illustrative worked example, land at S$3.0m plus rebuild-with-pool-and-landscaping at S$1.5m, totals about S$4.5m all-in, against a potential post-rebuild value of S$5.0–5.5m — construction running 18–30 months from concept to completion in their figures. Treat this as one brokerage's illustration of the shape of the economics, not a benchmark to apply to your own plot; land cost varies by more across locations than construction cost does.

Two real cases, both from the same publisher, show the spread of outcomes at either end. A 1960s single-storey house in Serangoon Gardens, rebuilt into a three-storey Category 4 residence for over S$1.5m, resold for over S$5m — described as a strong margin even after ABSD and renovation costs. Against that: a rebuild finished to a high specification, with premium finishes and a large budget, that the same guide reports struggled to attract strong offers, attributed to the site's orientation rather than to the spend on the build. Site fundamentals, not finish quality, decided which of these two outcomes you got.

The valuation mechanic behind both cases: a bank valuer prices landed property as land first, at a comparable rate per square foot of land area, and the building second, at its depreciated value — not its construction cost. A structure 20 or more years old contributes little to that valuation; a house rebuilt within the last few years commands a real premium; decade-old cosmetic renovation is largely not recovered at all. One worked illustration: a 15-year-old renovation might add only S$200,000–400,000 of value on a S$4.8m land basis — far below what it actually cost. And on eventual resale, a buyer generally prices against comparable sales and location, not against what you spent on the rebuild — so a chunk of what you spend is commonly reported as unrecoverable on exit, consistent with the depreciation point above.

Conveyancing: the paperwork around the build, not just the sale

There's no government-set fee schedule for private conveyancing — lawyers price rebuild-adjacent legal work (land purchase, mortgage-side work for the construction loan, and the eventual refinancing into a standard home loan) on their own terms. Market figures put an all-in private purchase conveyancing fee at S$2,000–5,000, separate from mortgage-side legal work, typically another S$1,800–3,000 when the bank appoints its own lawyer. Mortgage duty on the loan itself is 0.4% of the loan amount, capped at S$500, payable when the mortgage is executed.

CPF Ordinary Account can pay stamp duty (BSD and ABSD) and legal, transaction and lodgment fees on the land purchase — it cannot pay monthly conservancy charges, property tax or utilities, and it cannot fund the construction loan itself while the house is being built. Because BSD and ABSD are due within 14 days and CPF cannot disburse before its own charge is lodged on the property, most buyers pay stamp duty upfront in cash and apply for CPF reimbursement afterward, once the charge is registered — plan the cash timing, not just the total, around that sequencing gap.

Estate: what happens to a half-built house

A rebuild is a multi-year commitment with a live construction loan, an incomplete structure, and — if you're the sole owner — a single signatory on every draw-down and every contractor payment. If something happens to you mid-project, the practical question is who can keep the build moving: sign off on progress claims, instruct the architect, draw against the construction facility. A Lasting Power of Attorney is the general-purpose instrument for exactly this kind of ongoing-capacity gap, and it is a distinct instrument from the HDB-specific Powers of Attorney used for flat transactions — landed rebuild financing runs on the general LPA/POA framework, not HDB's prescribed formats.

Beyond incapacity, ordinary succession planning still applies to a rebuild in progress the same way it applies to any landed asset: who inherits the land and the unfinished structure, whether a will names an executor equipped to deal with a live construction contract and an undrawn loan balance, and — where more than one heir has a stake in the outcome — whether the family agrees on finishing the build, selling the half-finished site, or something in between. This site's estate section covers wills, probate, power of attorney and family disagreement in full; none of it is rebuild-specific, but all of it is more urgent while a project — and a loan — is live and incomplete.

The twelve questions

Two questions sort every reader of this page, and neither is "are you buying to invest or to live in it" — nobody rebuilds a house believing it will fall in value, so that question sorts nobody. The real questions: are you borrowing to fund this, and once it's built, are you renting it out or living in it yourself?

• Cash, own-use: you fund the rebuild without a construction loan and move back in. Pure appreciation play, no carry, no lender to answer to.
• Cash, let-out: you fund the rebuild without debt and rent the finished house out. Yield from day one, positive carry by construction — the whole return is the spread between rent and nothing, since there's no financing cost.
• Borrow, own-use: a construction loan, converting to a mortgage, funding a house you'll live in. Negative carry by construction — the house produces no income to offset the interest, and most rebuild owners sit here without naming it that way.
• Borrow, let-out: a construction loan funding a house you'll rent out. The spread play — rental yield against financing cost — and the gap between the two is the entire economics of the decision.

C0 The play. A rebuild is a balance-sheet play first: you're converting a depreciating structure and land into a new asset, betting the land-plus-new-building valuation exceeds what you spend. It only becomes a cash-flow play if you let the finished house out — and even then, the years of construction in between produce no cash flow at all, only outflow.

C1 Balance sheet. What you own changes materially: an old, depreciated structure is replaced by a new one that a bank valuer prices differently — land at comparable rate, building at its actual (now low) depreciated value pre-rebuild, and at something closer to construction cost immediately post-TOP. What you owe changes too: a land loan, then a construction loan, then a converted mortgage, each with its own LTV ceiling.

C2 Cash flow. This is where a rebuild differs sharply from buying an already-built home: money goes out in stages — land, demolition, progressive construction draws, professional fees, temporary rent — for 12 to 38 months before anything comes back, if anything ever does. The funding gap is the 25% (or more) of total cost the construction loan doesn't cover, due in cash, on top of temporary housing running into six figures.

C3 P&L. Profit is not the same as cash, and a rebuild makes that gap unusually visible: you may show no accounting loss during construction (the spend capitalises into the asset's cost basis) while your cash position bleeds every month against the construction loan's interest and the temporary rent. The reverse shows up at exit — a resale price a buyer won't fully credit to your spend (see the valuation section above) can look like profit on paper that the market simply declines to pay you for.

C4 Carry. Through the build, carry is unambiguously negative if you're borrowing: interest accrues on every drawn dollar, temporary rent is a pure cost, and the property tax remission (up to 2 years, conditions attached) only softens one line item, not the whole picture. Carry only turns positive after TOP, and only if you let the finished house out at a rent that clears the converted mortgage.

C5 Give / get. You give up: liquid cash tied up for 12–38 months, the certainty of a fixed price (construction budgets move), and the house itself as a place to live during that stretch. You get: a new structure (fresh structural warranty, no legacy defects, current-code compliance) and, per the case studies above, sometimes — not always — a real valuation premium that depends more on site fundamentals than on how much you spend.

C6 Exposed to. Construction cost overrun (contractor quotes above disagree by wide margins even before ground breaks); a conservative bank valuation on the land specifically because the existing structure is slated for demolition, which can shrink your loan quantum right when you need it; timeline slippage, which extends both interest accrual and temporary rent simultaneously; and, on exit, a market that prices comparable sales, not your receipts.

C7 For how long. Sources disagree by more than a year on how long a rebuild actually takes — 12 months at the fast end, 38 at the slow end, depending on house type and how each source defines "start." Commit to the longer end when you plan your cash runway and your temporary housing budget; the failure mode here is running out of patience or cash at month 20 of a project you budgeted for 14.

C8 Failure cascade. If a rebuild goes wrong, it goes wrong in this order: negative carry (interest plus temporary rent, no offsetting income) → hits cash flow (the 25%+ cash portion runs short, or an overrun eats the contingency) → accumulates into P&L (a delayed, over-budget project shows a worse cost basis against an uncertain resale value) → negative equity (if the finished valuation falls short of total spend) → illiquidity (a half-finished or freshly-finished landed house is a slow, thin market to sell into) → insolvency (only reached if the construction loan and land loan combined outrun what the completed asset, or the land alone, can cover). Most rebuilds that go wrong stop at the cash-flow stage — a funding gap solved by more cash from savings, not full-blown insolvency — but the mechanism runs in that order every time.

C9 Liquidity. A rebuild project mid-construction is close to illiquid — there's no ready market for a half-demolished or half-built landed house, and a forced sale at that stage would be sold at a steep haircut to anyone at all. Post-TOP, a freshly rebuilt landed house is more liquid than the project was, but landed property generally trades in a thinner, slower market than condominiums — expect months, not weeks, and expect the valuation-versus-spend gap described above to show up in the price a buyer is actually willing to pay.

C10 Control. This is the page's own answer to the twelve-question frame: a rebuild, like an A&A, is what CONTROL looks like at this point in a landed owner's lifecycle. You are not a price-taker on the asset the way you are as a buyer of a completed condo unit — you decide the layout, the spec, the size within the envelope, the timeline (within URA's limits) and the finish. That control costs money and carries the execution risk this section has walked through; the trade is real optionality over the asset in exchange for taking on the build risk yourself, instead of paying someone else's margin for a house that's already finished.

C11 The exit. Getting out costs Seller's Stamp Duty if you sell within 4 years of the underlying land's acquisition (16% down to 4% by year), ordinary agent commission if you use one, and — per the valuation section — a real chance the market prices your rebuilt house on comparables rather than on what you spent to get there. The cleanest exit, per this page's evidence, is a long hold: get past the SSD window, let the depreciation-versus-freshness math work in your favour rather than against a half-recovered spend, and sell (or stay) once the site fundamentals, not the renovation spend, are what's driving the price.

The businesses this transaction runs through

A rebuild employs more distinct professionals than almost any other transaction on this site, and each one takes a cut before a single dollar reaches the finished house. Architectural fees run 8–15% of construction value, structural engineering 2–4%, M&E engineering 1–3% — all before GST. On the contractor side, Qualified Person fees are quoted separately at 6–9% of contract value, an independent quantity surveyor at 1–3%, and a defect-rectification fund of 5% of contract value held back for 12 months after TOP — money you don't fully get out of the contractor's hands until a year after you move in. Recommended contingency, on top of all of that, is 10–15% of construction cost.

None of these fee percentages fall as the project gets simpler — an architect earning a percentage of construction value has no built-in incentive to design you a cheaper house, and a contractor pricing off the same base has limited incentive to flag that an A&A at 60–80% of rebuild cost might serve you as well as a full teardown. Get a fixed-fee or capped-fee arrangement where you can, and ask directly, before signing, whether the professional you're hiring is paid more if your project gets bigger.

What the realtor earns here — and where the incentive points

Say this plainly: a realtor has almost no direct financial stake in whether you rebuild. A rebuild isn't a transaction CEA licenses commission on — there's no sale, so there's no commission on the decision itself. Commission is negotiable, not fixed by CEA, and an agent cannot represent both sides of a deal or collect from both parties — that's an offence, not just bad practice. On an eventual sale of the land or the finished house, each 1% of commission on a S$5,000,000 property is S$50,000, before GST — real money, and it only exists if a sale happens.

That structure creates a specific, quiet conflict worth naming: an agent brought in to advise a landed HOLDER weighing rebuild-versus-sell earns nothing if you rebuild and stay, and earns a full commission if you decide to sell instead — whether selling is actually the better move for you or not. The same is true in reverse if an agent is compensated (directly or by referral fee) for pointing you toward a particular contractor, architect or mortgage broker in the rebuild ecosystem: that referral fee is a real incentive, and it is not always disclosed. Ask directly whether the person advising you on "sell now" versus "rebuild and hold" is paid differently depending on which one you choose.

What's uncertain here

Every cost and timeline figure on this page comes from contractors, architects and brokers pricing their own work — not from BCA, URA or IRAS publishing a rebuild cost index, because no such government figure exists. Where two or more sources disagree, this page has shown both rather than picked one. Treat every S$ and every month range above as a starting point for your own tender and your own architect's estimate, not as a number to build a budget on unverified.