PROPERTY DEVELOPMENT FEASIBILITY · FOR WA LANDOWNERS
Before You Subdivide Or Build,
Find Out If Your Block Is Worth Developing.
Your options. The estimated costs. The risks you haven’t priced in.
A clear feasibility report before you commit to the project.
Explore the report format above. Illustrative preview—not a client result.
Real WA government data
Zoning and property-specific site-risk checks.
Realistic options compared
Understand the alternatives before choosing a path.
The downside made clear
See what changing costs and sale prices could mean.
Next Step: Tell Us About Your Block
We’ll call to discuss your property and whether a report is right for you.
Your Enquiry Is With Us.
Keep your phone nearby. We’ll call to discuss your property and the next step.
No report has been purchased or commissioned.
A PROPERTY-SPECIFIC ASSESSMENT. A CLEARER NEXT STEP.
CLIENT FEEDBACK
What Our Clients Say.
“The feasibility report was incredibly detailed. It gave me a clear understanding of my startup costs, ongoing expenses and potential profit.”
“We'd been talking about subdividing our 850sqm block for almost three years but never knew whether it would actually be worth the effort. We did the BlockYield test and compared keeping our existing home and building at the rear against demolishing and constructing two new houses. The difference in costs was bigger than we expected. What I appreciated most was seeing the estimated profit after all the expenses, rather than just looking at what the finished properties might sell for. We finally have a direction.”
“So glad we did this before spending money on plans. We thought subdividing our property and building two villas would leave us with a decent profit, but once we entered the numbers into BlockYield, the projected margin was almost nothing. We decided not to go ahead and are now looking at other options. It wasn't the outcome we wanted, but finding that out early was probably the best result we could've asked for.”
“I've been looking at duplex development sites for about six months and was getting frustrated trying to calculate everything myself. BlockYield helped me put the land purchase, stamp duty, demolition, construction, site works, finance and selling costs into one feasibility assessment. The property I was considering looked attractive at first, but the conservative scenario showed a much smaller return. I ended up negotiating a lower purchase price rather than relying on the agent's estimates.”
“My parents own an older house on a large block and wanted to know if they could build at the back to help fund their retirement. None of us have any development experience, so it was difficult knowing where to start. The report made the financial side much easier to understand. We could compare selling the rear lot as vacant land with building a new home on it. We're still checking the planning requirements, but at least we understand the potential costs now.”
“I honestly thought the profit on our subdivision would be around $250k based on what similar homes were selling for. Once we ran the numbers through BlockYield, we realised we hadn't included a heap of costs, especially finance, subdivision works and selling fees. The estimated profit was considerably lower. I'd much rather work with realistic numbers than get halfway through a development and discover we've miscalculated everything.”
“My husband is a builder and I'm the one who handles most of our finances. We were considering retaining our existing house and constructing a three-bedroom home behind it. The report was detailed enough for him to review the construction assumptions but simple enough for me to understand the overall numbers. We especially liked comparing the expected sale price against the total development cost. It gave us a much clearer starting point.”
“Nearly made a very expensive mistake. I was about to put an offer on a property advertised with subdivision potential because the selling agent made the opportunity sound fantastic. I completed the BlockYield assessment first and realised the numbers only looked attractive under a fairly optimistic resale scenario. Once I allowed for higher building costs and a longer holding period, the return wasn't worth the risk for me. I walked away from that one.”
“We have an older investment property on a reasonably large block and couldn't decide whether to renovate, subdivide and retain the front house, or demolish everything and start again. The feasibility report let us look at the financial implications of the different development options instead of arguing over which one sounded better. We haven't made a final decision yet, but it's helped us narrow down what makes sense.”
“The amount of little expenses involved in subdivision is ridiculous when you actually add them all up. Surveying, applications, service connections, site preparation, retaining walls, finance, contingency and then the actual building costs on top. I was only thinking about the construction quote originally. BlockYield gave me a much more complete picture of what I could be getting myself into.”
“We bought our house seven years ago and always thought we'd eventually split the backyard and build something behind it. I had absolutely no idea how much money we'd need upfront. The BlockYield report showed us the estimated costs at different stages and what our potential return might look like if we sold the new property. It was honestly a relief to finally have the numbers laid out instead of constantly guessing.”
“I've worked in construction for years but never done my own property development. I understand building costs, but the finance, selling and subdivision side was new to me. This helped pull everything together. The report showed that the triplex site I was looking at had a reasonable margin under the base assumptions, but not much room for cost overruns. That's exactly the kind of information I wanted before making an offer.”
“Our original plan was to knock down our family home and build two modern houses, sell one and live in the other. We used BlockYield to see how the numbers might work compared with retaining the existing house and building at the rear. The difference in the amount of money we'd need to borrow was significant. We ended up changing our preferred approach because we didn't want to stretch ourselves financially.”
“I was convinced three villas would be more profitable than two larger homes. More properties means more money, right? Apparently not always. After comparing the construction costs, land allocation, expected selling prices and other expenses, the two-home scenario actually looked more attractive in our assumptions. Still need to confirm what's permitted on the site, but the comparison completely changed how I was looking at the project.”
“What I liked was that the report didn't just throw a big profit figure at me and leave it there. I could actually see where the money was going and how different costs affected the outcome. We were looking at a rear subdivision and hadn't properly considered the impact of changing the driveway, services and access to the existing house. Those costs made a noticeable difference to the overall feasibility.”
“I've been researching development sites around Perth for the last year. Most of the time you're relying on rough calculations, builder estimates and whatever the agent tells you. BlockYield made it much easier to assess the same cost categories across different opportunities. I ran a couple of duplex scenarios and one triplex scenario, and the results helped me decide which sites were worth investigating further.”
“My partner and I were thinking about building a townhouse at the back of our property to sell. We assumed the money we'd make would cover a big chunk of our mortgage. The report was a reality check because it showed how much of the expected sale price would go towards development expenses. We still think it's worth exploring, but we're going into it with much more realistic expectations.”
“We were looking at demolishing an older house and constructing two higher-end homes. The biggest uncertainty for us was what the completed properties would sell for. I liked being able to compare different resale scenarios rather than relying on one estimate. Even a relatively small change in the selling price made a huge difference to the projected profit. The report helped us understand just how sensitive the development was to the market.”
“I don't have a property background and found the whole subdivision process pretty overwhelming. Everyone I spoke to seemed to give me a different number. BlockYield was helpful because the estimated costs were separated into categories and the assumptions were explained clearly. It didn't replace speaking with the council or a surveyor, but it gave me enough understanding to ask much better questions.”
“I was looking at a cheap development block and thought I'd found a bargain. Once I accounted for demolition, earthworks, construction and all the other expenses, the estimated profit was actually negative under my expected sale prices. I decided not to purchase it. Spending time doing the feasibility assessment was a much better option than finding out the hard way after buying the property.”
“Three siblings, one inherited property and three completely different opinions about what to do with it. One wanted to sell immediately, another wanted to subdivide and sell the lots, and I wanted to build. We used the report to compare the potential financial outcomes of each option. It didn't make the decision for us, but having actual estimates on the table made our conversations much more productive.”
“We've got a corner block and wanted to know whether separating part of the land and building a new house would make financial sense. I was surprised by how much detail went into the report. It covered the costs we'd expected and quite a few we hadn't. We now have a clearer idea of what the project could cost before we spend money progressing it.”
“I had two potential development properties shortlisted and both looked good on paper. One was cheaper to purchase but needed more site preparation, while the other cost more upfront but appeared simpler to develop. Running the feasibility scenarios helped me compare the total estimated costs rather than focusing on the purchase price alone. It was a really useful way to approach the decision.”
“We wanted to subdivide our corner property and sell the new block without building on it. Most of the information I'd found online was about building duplexes, so I appreciated being able to look specifically at the vacant-land option. The report helped us understand the estimated subdivision expenses and what the proceeds might look like after costs. Much easier than trying to piece it all together ourselves.”
“My husband wanted to demolish and build three townhouses, while I was worried about the amount we'd need to borrow. We compared a three-townhouse development with a smaller two-dwelling project. The three-home option had higher potential revenue, but it also involved considerably more expenditure. Seeing the estimated return relative to the money invested helped us have a much more sensible discussion.”
“The finance costs were what caught me out. I had a rough estimate for the land and construction but hadn't thought much about interest during approvals and the building period. When I tested a scenario where the development took several months longer than planned, the profit dropped more than I expected. Really useful to see that before committing to anything.”
“We'd received building estimates for a duplex project but were struggling to work out the total amount we'd actually spend from start to finish. The BlockYield report brought the construction, site preparation, subdivision, professional fees and sale expenses into one place. It also showed us how much contingency could affect the final result. Exactly the sort of overview we needed.”
“I was assessing a triplex block and had been told the project could make a very healthy profit. The feasibility numbers told a different story. Under the expected sale prices, the margin was fairly thin, and under the lower sale-price scenario it was a loss. I passed on the property and kept looking. Really glad I didn't just rely on someone else's back-of-the-envelope calculations.”
“Our house is older but still in good condition, so demolishing it seemed like a waste. We wanted to understand whether keeping the front home and building behind it could be worthwhile. The report helped us compare that option with a full redevelopment, including the different cost and resale assumptions. We're now focusing on the retain-and-build option, subject to planning advice.”
“I liked that it wasn't trying to convince me every subdivision is a goldmine. The report showed a few different outcomes, including what could happen if construction costs went up or the finished homes sold for less than expected. Property development involves enough risk already. I'd rather see the downside clearly before getting excited about the upside.”
“This is my first time considering a subdivision. I own a property with a large backyard and wanted to know if building a second dwelling could be a way to create some equity. The report helped me understand the potential construction budget, other development expenses and possible end values. It gave me a much better foundation before speaking with builders and finance brokers.”
“We were exploring whether to divide our land into three lots and sell them separately or develop the lots ourselves. I hadn't appreciated how different the cash requirements would be between those options. The analysis made it clear that the build-and-sell scenario involved a lot more capital and exposure, even though the potential proceeds were higher. That distinction was important for our family.”
“My husband had put together his own spreadsheet for our development, but every time we discussed the budget we found another expense to add. Using BlockYield gave us a more organised cost breakdown and a consistent set of assumptions. We still needed quotes to confirm the actual figures, but it was much easier to work from one structured report.”
“I was looking at buying a rundown house, demolishing it and building two villas. The purchase price seemed reasonable, but the report showed how much the overall project depended on the construction budget and final sale prices. I ended up deciding the expected return wasn't high enough for the risk. It's saved me from spending more time chasing a site that didn't suit my numbers.”
“We were considering two luxury homes versus three smaller dwellings on a development property. I expected the three-dwelling option to come out ahead because of the additional sale, but the estimated construction costs and differences in resale values made it much closer than expected. Having both scenarios laid out clearly helped us decide what to investigate with our architect.”
“Very easy to use and the report was more detailed than I expected. The section showing how changes in construction costs affect the profit was especially useful. I increased the budget to allow for a larger contingency and the development went from looking attractive to being borderline. That changed how much I was prepared to pay for the land.”
“We have a character home and wanted to investigate building at the rear without losing the existing property's appeal. The financial comparison was helpful because it considered the costs of developing the back portion and the potential value of the completed property. There are still heritage and planning matters we need to confirm, but financially it gave us a clearer direction.”
“I work in the building industry, so I had a fair idea of what the construction might cost. What I didn't have was a complete development budget. The feasibility report pulled together the acquisition, approvals, services, construction, finance and selling assumptions. It was a good way to check whether the project made sense beyond the building quote.”
“Our family owns a property that could potentially be redeveloped, and we'd been getting different opinions from agents and builders. The report gave us a common starting point to compare selling the existing property with subdividing and constructing new homes. It was particularly useful seeing the potential profit alongside the amount of capital required.”
“I was looking at a fairly straightforward two-villa development and mainly wanted to know the estimated profit after absolutely everything. Not just the construction costs. The report included finance, professional fees, site works and selling expenses, which made the final margin easier to interpret. I've kept the figures as a reference while getting more detailed quotes.”
“We own an older property and were considering demolishing it to build two new homes, keeping one and selling the other. The report helped us understand how the sale proceeds from one dwelling might compare with the total cost of the project. It also made us think carefully about how much debt we'd be comfortable carrying during construction.”
“I genuinely thought our proposed duplex development was going to make a lot more money. After entering our expected costs and sale prices, BlockYield showed the margin was much smaller than we'd assumed. We tested a higher construction budget and the project became unprofitable. We've put the development on hold rather than rush into something that could leave us worse off.”
“My parents wanted to subdivide their property so I could build a home at the back. We weren't trying to make a huge development profit, but we needed to know whether it would be affordable for everyone involved. The report helped us estimate the subdivision and building expenses and understand how much money we'd need. It made the whole idea feel much less confusing.”
“I've assessed a few development opportunities and the biggest challenge is usually getting all the numbers together in a consistent format. The BlockYield report made it easy to compare a duplex project against a three-townhouse development, including different resale prices, building budgets and holding periods. I particularly appreciated that it showed both the potential upside and what could happen if the assumptions didn't work out.”
A PLANNING POSSIBILITY ISN’T A PROFIT ESTIMATE.
“Can I subdivide?”
Is Only Half The Question.
A block can have development potential without a project making financial sense. Building costs, site works, selling costs and sale-price assumptions can change the answer.
BlockYield brings the realistic options and estimated numbers together—so you can understand what looks worth investigating, and what might be better left alone.
Illustrative assessment framework. Figures and suitability are property-specific.
We wanted a clear answer about our own land. Getting one was harder than we expected.
WHY WE’RE BUILDING BLOCKYIELD
We’ve Had The Same
Questions You Have.
When we explored developing our own land, even a paid feasibility spreadsheet left a lot to unpack.
That experience became the starting point for BlockYield: a verdict-first report, realistic alternatives and assumptions you can follow. Including an honest answer when the numbers don’t stack up.
Let’s discuss your property →BEFORE YOU TAKE THE NEXT STEP
What You’re Probably Wondering.
What happens after I submit my details?
We call to understand your property and what you’re considering. If the service fits, we book a meeting to discuss the report scope and price. Submitting the form does not commission a report.
What’s included in the report?
A clear verdict, comparison of realistic development options, estimated cost breakdown, comparable sale evidence, sensitivity analysis, timeline, prioritised risks and practical next steps. The scope is agreed for your property before purchase.
How long does the report take?
Our target turnaround is 1–2 days after commissioning and receipt of the required details; we confirm the timeframe for your project.
What if developing my property doesn’t look viable?
That is a useful finding too. The report explains what drives the assessment and which assumptions or alternatives warrant investigation. The fee pays for the assessment, regardless of the verdict.
Are the profit estimates guaranteed?
No. Estimates depend on assumptions, available information and changing conditions. We show sensitivities and limitations. The report is not a valuation, planning approval or a replacement for confirmation from relevant authorities and qualified professionals.
Can you assess a property I’m considering buying?
We can discuss a specific shortlisted WA property. Tell us your deadline and what information you have. An enquiry does not extend any contract or due-diligence deadline.
A conversation first. Clear scope and pricing before you commission.